/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-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 14:59:38,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 14:59:38,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 14:59:38,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 14:59:38,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 14:59:38,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 14:59:38,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 14:59:38,216 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-POR-NewStatesSleep-NoLbe.epf [2021-06-13 14:59:38,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 14:59:38,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 14:59:38,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 14:59:38,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 14:59:38,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 14:59:38,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 14:59:38,258 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 14:59:38,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 14:59:38,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 14:59:38,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 14:59:38,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 14:59:38,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 14:59:38,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 14:59:38,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 14:59:38,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 14:59:38,260 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 14:59:38,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 14:59:38,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 14:59:38,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 14:59:38,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 14:59:38,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 14:59:38,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 14:59:38,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 14:59:38,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 14:59:38,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 14:59:38,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 14:59:38,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 14:59:38,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 14:59:38,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 14:59:38,263 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 14:59:38,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 14:59:38,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 14:59:38,263 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 14:59:38,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 14:59:38,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 14:59:38,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 14:59:38,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 14:59:38,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 14:59:38,615 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 14:59:38,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-06-13 14:59:38,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663142c92/da007c0a35534e6fa43467897e7475a7/FLAG597baacb6 [2021-06-13 14:59:39,084 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 14:59:39,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-06-13 14:59:39,085 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 14:59:39,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663142c92/da007c0a35534e6fa43467897e7475a7/FLAG597baacb6 [2021-06-13 14:59:39,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663142c92/da007c0a35534e6fa43467897e7475a7 [2021-06-13 14:59:39,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 14:59:39,149 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 14:59:39,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 14:59:39,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 14:59:39,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 14:59:39,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0435a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39, skipping insertion in model container [2021-06-13 14:59:39,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 14:59:39,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 14:59:39,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 14:59:39,286 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 14:59:39,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 14:59:39,323 INFO L208 MainTranslator]: Completed translation [2021-06-13 14:59:39,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39 WrapperNode [2021-06-13 14:59:39,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 14:59:39,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 14:59:39,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 14:59:39,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 14:59:39,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 14:59:39,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 14:59:39,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 14:59:39,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 14:59:39,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... [2021-06-13 14:59:39,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 14:59:39,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 14:59:39,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 14:59:39,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 14:59:39,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 14:59:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 14:59:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 14:59:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 14:59:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-13 14:59:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-13 14:59:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 14:59:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 14:59:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 14:59:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 14:59:39,465 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 14:59:39,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 14:59:39,742 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-13 14:59:39,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 02:59:39 BoogieIcfgContainer [2021-06-13 14:59:39,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 14:59:39,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 14:59:39,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 14:59:39,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 14:59:39,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 02:59:39" (1/3) ... [2021-06-13 14:59:39,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24515fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 02:59:39, skipping insertion in model container [2021-06-13 14:59:39,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 02:59:39" (2/3) ... [2021-06-13 14:59:39,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24515fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 02:59:39, skipping insertion in model container [2021-06-13 14:59:39,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 02:59:39" (3/3) ... [2021-06-13 14:59:39,750 INFO L111 eAbstractionObserver]: Analyzing ICFG 09b-return-after-end.c [2021-06-13 14:59:39,772 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 14:59:39,772 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 14:59:39,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 14:59:39,773 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 14:59:39,809 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,810 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,810 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,810 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,810 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,810 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,810 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,810 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,811 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,811 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,811 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,811 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,811 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,811 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,812 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,812 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,813 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,814 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,814 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,814 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 14:59:39,822 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 14:59:39,842 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-13 14:59:39,934 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 14:59:39,934 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 14:59:39,934 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 14:59:39,935 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 14:59:39,935 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 14:59:39,935 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 14:59:39,935 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 14:59:39,935 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 14:59:39,975 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 14:59:39,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 14:59:39,980 INFO L82 PathProgramCache]: Analyzing trace with hash -129271482, now seen corresponding path program 1 times [2021-06-13 14:59:39,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 14:59:39,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608252006] [2021-06-13 14:59:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 14:59:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 14:59:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 14:59:40,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 14:59:40,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608252006] [2021-06-13 14:59:40,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608252006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 14:59:40,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 14:59:40,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 14:59:40,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17509900] [2021-06-13 14:59:40,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 14:59:40,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 14:59:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 14:59:40,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 14:59:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 14:59:40,131 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 14:59:40,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 14:59:40,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 14:59:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 14:59:40,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 14:59:40,199 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 14:59:40,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 14:59:40,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1459423930, now seen corresponding path program 1 times [2021-06-13 14:59:40,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 14:59:40,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310683242] [2021-06-13 14:59:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 14:59:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 14:59:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 14:59:40,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 14:59:40,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310683242] [2021-06-13 14:59:40,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310683242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 14:59:40,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 14:59:40,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 14:59:40,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905708577] [2021-06-13 14:59:40,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 14:59:40,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 14:59:40,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 14:59:40,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 14:59:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 14:59:40,230 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 14:59:40,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 14:59:40,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 14:59:40,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 14:59:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 14:59:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 14:59:40,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 14:59:40,289 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 14:59:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 14:59:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1475136280, now seen corresponding path program 2 times [2021-06-13 14:59:40,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 14:59:40,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980880226] [2021-06-13 14:59:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 14:59:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 14:59:40,311 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 14:59:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 14:59:40,334 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 14:59:40,365 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 14:59:40,365 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 14:59:40,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 14:59:40,371 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 14:59:40,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 02:59:40 BasicIcfg [2021-06-13 14:59:40,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 14:59:40,406 INFO L168 Benchmark]: Toolchain (without parser) took 1254.65 ms. Allocated memory is still 248.5 MB. Free memory was 210.4 MB in the beginning and 182.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2021-06-13 14:59:40,410 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 248.5 MB. Free memory is still 228.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 14:59:40,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.74 ms. Allocated memory is still 248.5 MB. Free memory was 210.2 MB in the beginning and 232.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2021-06-13 14:59:40,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.74 ms. Allocated memory is still 248.5 MB. Free memory was 232.6 MB in the beginning and 230.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 14:59:40,415 INFO L168 Benchmark]: Boogie Preprocessor took 24.12 ms. Allocated memory is still 248.5 MB. Free memory was 230.5 MB in the beginning and 229.9 MB in the end (delta: 524.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 14:59:40,416 INFO L168 Benchmark]: RCFGBuilder took 348.44 ms. Allocated memory is still 248.5 MB. Free memory was 229.9 MB in the beginning and 215.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-13 14:59:40,416 INFO L168 Benchmark]: TraceAbstraction took 657.22 ms. Allocated memory is still 248.5 MB. Free memory was 215.3 MB in the beginning and 182.8 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2021-06-13 14:59:40,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 248.5 MB. Free memory is still 228.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 173.74 ms. Allocated memory is still 248.5 MB. Free memory was 210.2 MB in the beginning and 232.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.74 ms. Allocated memory is still 248.5 MB. Free memory was 232.6 MB in the beginning and 230.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.12 ms. Allocated memory is still 248.5 MB. Free memory was 230.5 MB in the beginning and 229.9 MB in the end (delta: 524.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 348.44 ms. Allocated memory is still 248.5 MB. Free memory was 229.9 MB in the beginning and 215.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 657.22 ms. Allocated memory is still 248.5 MB. Free memory was 215.3 MB in the beginning and 182.8 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 114, positive: 92, positive conditional: 92, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 96, positive: 92, positive conditional: 92, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 96, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 46, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 46, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, positive: 38, positive conditional: 4, positive unconditional: 34, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 96, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 46, unknown conditional: 0, unknown unconditional: 46] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 43, Positive conditional cache size: 2, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5, SemanticConditionEliminator.Independence Queries: [ total: 11, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 7, negative conditional: 3, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 7, negative conditional: 3, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, positive: 38, positive conditional: 4, positive unconditional: 34, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 5, negative conditional: 1, negative unconditional: 4, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 43, Positive conditional cache size: 2, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5, Eliminated conditions: 4, SemanticConditionEliminator.Independence Queries: [ total: 11, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 7, negative conditional: 3, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 7, negative conditional: 3, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, positive: 38, positive conditional: 4, positive unconditional: 34, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 5, negative conditional: 1, negative unconditional: 4, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 43, Positive conditional cache size: 2, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5, Eliminated conditions: 4 ], Maximal queried relation: 2, Independence queries for same thread: 18 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 1; VAL [x=1] [L16] 0 int y = 1; VAL [x=1, y=1] [L31] 0 pthread_t threadId; VAL [x=1, y=1] [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 VAL [arg={0:0}, arg={0:0}, x=0, y=0] [L36] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=0, y=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 503.3ms, OverallIterations: 3, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.2ms, PartialOrderReductionTime: 142.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.8ms SsaConstructionTime, 42.0ms SatisfiabilityAnalysisTime, 68.9ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...