/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-MCRwithDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 04:51:47,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 04:51:47,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 04:51:47,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 04:51:47,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 04:51:47,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 04:51:47,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 04:51:47,120 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-MCRwithDepranks.epf [2022-02-16 04:51:47,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 04:51:47,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 04:51:47,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 04:51:47,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 04:51:47,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 04:51:47,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 04:51:47,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 04:51:47,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 04:51:47,147 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 04:51:47,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 04:51:47,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 04:51:47,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 04:51:47,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 04:51:47,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 04:51:47,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 04:51:47,150 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 04:51:47,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 04:51:47,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 04:51:47,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 04:51:47,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 04:51:47,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-16 04:51:47,380 INFO L275 PluginConnector]: CDTParser initialized [2022-02-16 04:51:47,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2022-02-16 04:51:47,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65e72bb07/df72388f1e5f4844b410dd21500a4133/FLAG41b73d02b [2022-02-16 04:51:47,877 INFO L306 CDTParser]: Found 1 translation units. [2022-02-16 04:51:47,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2022-02-16 04:51:47,878 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-16 04:51:47,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65e72bb07/df72388f1e5f4844b410dd21500a4133/FLAG41b73d02b [2022-02-16 04:51:47,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65e72bb07/df72388f1e5f4844b410dd21500a4133 [2022-02-16 04:51:47,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 04:51:47,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-16 04:51:47,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-16 04:51:47,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-16 04:51:47,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-16 04:51:47,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:51:47" (1/1) ... [2022-02-16 04:51:47,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4853224b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:47, skipping insertion in model container [2022-02-16 04:51:47,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:51:47" (1/1) ... [2022-02-16 04:51:47,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-16 04:51:47,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-16 04:51:48,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 04:51:48,077 INFO L203 MainTranslator]: Completed pre-run [2022-02-16 04:51:48,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 04:51:48,094 INFO L208 MainTranslator]: Completed translation [2022-02-16 04:51:48,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48 WrapperNode [2022-02-16 04:51:48,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-16 04:51:48,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 04:51:48,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 04:51:48,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 04:51:48,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,114 INFO L137 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-02-16 04:51:48,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 04:51:48,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 04:51:48,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 04:51:48,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 04:51:48,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 04:51:48,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 04:51:48,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 04:51:48,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 04:51:48,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (1/1) ... [2022-02-16 04:51:48,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 04:51:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:51:48,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-16 04:51:48,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-16 04:51:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-16 04:51:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-16 04:51:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-16 04:51:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-16 04:51:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-16 04:51:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 04:51:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 04:51:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-16 04:51:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-16 04:51:48,222 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 04:51:48,271 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 04:51:48,272 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 04:51:48,373 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 04:51:48,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 04:51:48,377 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-16 04:51:48,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:51:48 BoogieIcfgContainer [2022-02-16 04:51:48,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 04:51:48,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 04:51:48,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 04:51:48,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 04:51:48,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 04:51:47" (1/3) ... [2022-02-16 04:51:48,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5f48d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:51:48, skipping insertion in model container [2022-02-16 04:51:48,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:51:48" (2/3) ... [2022-02-16 04:51:48,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5f48d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:51:48, skipping insertion in model container [2022-02-16 04:51:48,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:51:48" (3/3) ... [2022-02-16 04:51:48,384 INFO L111 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2022-02-16 04:51:48,388 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 04:51:48,388 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 04:51:48,388 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 04:51:48,388 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 04:51:48,424 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,425 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,425 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,425 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,425 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,425 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,425 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,425 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,426 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,426 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,426 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,426 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,428 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,429 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,429 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,429 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:51:48,430 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 04:51:48,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 04:51:48,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:51:48,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 04:51:48,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-16 04:51:48,477 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 04:51:48,490 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 04:51:48,491 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-16 04:51:48,504 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 29 transitions, 63 flow [2022-02-16 04:51:48,519 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 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) [2022-02-16 04:51:48,548 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 34 transitions and produced 35 states. [2022-02-16 04:51:48,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:51:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:51:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1224766481, now seen corresponding path program 1 times [2022-02-16 04:51:48,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:51:48,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399740484] [2022-02-16 04:51:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:51:48,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:51:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:51:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:51:48,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:51:48,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399740484] [2022-02-16 04:51:48,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399740484] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:51:48,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:51:48,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 04:51:48,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10443028] [2022-02-16 04:51:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:51:48,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 04:51:48,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:51:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 04:51:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-16 04:51:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:51:48,789 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:51:48,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-02-16 04:51:48,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:51:48,809 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 46 transitions and produced 41 states. [2022-02-16 04:51:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 04:51:48,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 04:51:48,810 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:51:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:51:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1933211376, now seen corresponding path program 1 times [2022-02-16 04:51:48,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:51:48,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655088338] [2022-02-16 04:51:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:51:48,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:51:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 04:51:48,824 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 04:51:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 04:51:48,842 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 04:51:48,843 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 04:51:48,844 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location fooErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-16 04:51:48,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-16 04:51:48,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-02-16 04:51:48,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 04:51:48,850 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-16 04:51:48,856 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-16 04:51:48,856 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 04:51:48,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 04:51:48 BasicIcfg [2022-02-16 04:51:48,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 04:51:48,870 INFO L158 Benchmark]: Toolchain (without parser) took 927.32ms. Allocated memory is still 201.3MB. Free memory was 145.9MB in the beginning and 133.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2022-02-16 04:51:48,870 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 04:51:48,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 151.60ms. Allocated memory is still 201.3MB. Free memory was 145.7MB in the beginning and 174.7MB in the end (delta: -29.0MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2022-02-16 04:51:48,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.56ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 173.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-16 04:51:48,871 INFO L158 Benchmark]: Boogie Preprocessor took 13.38ms. Allocated memory is still 201.3MB. Free memory was 173.3MB in the beginning and 172.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 04:51:48,872 INFO L158 Benchmark]: RCFGBuilder took 248.61ms. Allocated memory is still 201.3MB. Free memory was 172.2MB in the beginning and 163.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-16 04:51:48,872 INFO L158 Benchmark]: TraceAbstraction took 490.29ms. Allocated memory is still 201.3MB. Free memory was 162.9MB in the beginning and 133.8MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-02-16 04:51:48,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 151.60ms. Allocated memory is still 201.3MB. Free memory was 145.7MB in the beginning and 174.7MB in the end (delta: -29.0MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.56ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 173.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.38ms. Allocated memory is still 201.3MB. Free memory was 173.3MB in the beginning and 172.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 248.61ms. Allocated memory is still 201.3MB. Free memory was 172.2MB in the beginning and 163.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 490.29ms. Allocated memory is still 201.3MB. Free memory was 162.9MB in the beginning and 133.8MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: assertion can be violated assertion can be violated We found a FailurePath: [L16] 0 int x = 0; VAL [x=0] [L24] 0 pthread_t threadId; VAL [threadId={2:0}, x=0] [L25] FCALL, FORK 0 pthread_create(&threadId, NULL, & foo, NULL) VAL [arg={0:0}, pthread_create(&threadId, NULL, & foo, NULL)=-1, threadId={2:0}, x=0] [L27] 0 x = x - 1 VAL [arg={0:0}, threadId={2:0}, x=-1] [L19] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=-1] - UnprovableResult [Line: 25]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 37 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-16 04:51:48,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-16 04:51:49,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...