/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/gemcutter/NewStatesSleepPersistentFixedOrder.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_THREAD_INSTANCE --traceabstraction.maximal.amount.of.steps.the.threads.are.allowed.to.take.successively 1 --traceabstraction.enable.heuristic.with.loops.as.step.type false --traceabstraction.considered.threads.and.their.maximal.amount.of.steps X --traceabstraction.defines.what.statements.are.considered.a.step.in.por ALL_READ_WRITE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.orders-218013a [2023-05-04 13:56:48,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-05-04 13:56:48,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-05-04 13:56:48,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-05-04 13:56:48,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-05-04 13:56:48,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-05-04 13:56:48,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-05-04 13:56:48,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-05-04 13:56:48,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-05-04 13:56:48,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-05-04 13:56:48,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-05-04 13:56:48,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-05-04 13:56:48,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-05-04 13:56:48,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-05-04 13:56:48,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-05-04 13:56:48,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-05-04 13:56:48,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-05-04 13:56:48,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-05-04 13:56:48,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-05-04 13:56:48,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-05-04 13:56:48,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-05-04 13:56:48,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-05-04 13:56:48,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-05-04 13:56:48,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-05-04 13:56:48,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-05-04 13:56:48,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-05-04 13:56:48,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-05-04 13:56:48,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-05-04 13:56:48,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-05-04 13:56:48,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-05-04 13:56:48,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-05-04 13:56:48,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-05-04 13:56:48,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-05-04 13:56:48,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-05-04 13:56:48,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-05-04 13:56:48,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-05-04 13:56:48,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-05-04 13:56:48,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-05-04 13:56:48,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-05-04 13:56:48,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-05-04 13:56:48,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-05-04 13:56:48,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2023-05-04 13:56:48,560 INFO L113 SettingsManager]: Loading preferences was successful [2023-05-04 13:56:48,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-05-04 13:56:48,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-05-04 13:56:48,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-05-04 13:56:48,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-05-04 13:56:48,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-05-04 13:56:48,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-05-04 13:56:48,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-05-04 13:56:48,562 INFO L138 SettingsManager]: * Use SBE=true [2023-05-04 13:56:48,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-05-04 13:56:48,563 INFO L138 SettingsManager]: * sizeof long=4 [2023-05-04 13:56:48,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-05-04 13:56:48,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * sizeof long double=12 [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * Use constant arrays=true [2023-05-04 13:56:48,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-05-04 13:56:48,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-05-04 13:56:48,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-05-04 13:56:48,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-05-04 13:56:48,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-05-04 13:56:48,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-04 13:56:48,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-05-04 13:56:48,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-05-04 13:56:48,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-05-04 13:56:48,567 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-05-04 13:56:48,567 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-05-04 13:56:48,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-05-04 13:56:48,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-05-04 13:56:48,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-05-04 13:56:48,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-05-04 13:56:48,568 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-05-04 13:56:48,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Maximal amount of steps the threads are allowed to take successively -> 1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Enable heuristic with loops as step type -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Considered threads and their maximal amount of steps -> X Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Defines what statements are considered a step in POR -> ALL_READ_WRITE [2023-05-04 13:56:48,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-05-04 13:56:48,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-05-04 13:56:48,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-05-04 13:56:48,830 INFO L271 PluginConnector]: Initializing CDTParser... [2023-05-04 13:56:48,831 INFO L275 PluginConnector]: CDTParser initialized [2023-05-04 13:56:48,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-05-04 13:56:48,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a19f310/10bb087d525a45ccb5390f281a3e1cfa/FLAG7b64b3d3c [2023-05-04 13:56:49,381 INFO L306 CDTParser]: Found 1 translation units. [2023-05-04 13:56:49,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-05-04 13:56:49,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a19f310/10bb087d525a45ccb5390f281a3e1cfa/FLAG7b64b3d3c [2023-05-04 13:56:49,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a19f310/10bb087d525a45ccb5390f281a3e1cfa [2023-05-04 13:56:49,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-05-04 13:56:49,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-05-04 13:56:49,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-05-04 13:56:49,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-05-04 13:56:49,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-05-04 13:56:49,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.05 01:56:49" (1/1) ... [2023-05-04 13:56:49,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f503336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:49, skipping insertion in model container [2023-05-04 13:56:49,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.05 01:56:49" (1/1) ... [2023-05-04 13:56:49,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-05-04 13:56:49,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-05-04 13:56:50,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-05-04 13:56:50,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-04 13:56:50,098 INFO L203 MainTranslator]: Completed pre-run [2023-05-04 13:56:50,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-05-04 13:56:50,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-04 13:56:50,191 INFO L208 MainTranslator]: Completed translation [2023-05-04 13:56:50,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50 WrapperNode [2023-05-04 13:56:50,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-05-04 13:56:50,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-05-04 13:56:50,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-05-04 13:56:50,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-05-04 13:56:50,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,242 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-05-04 13:56:50,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-05-04 13:56:50,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-05-04 13:56:50,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-05-04 13:56:50,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-05-04 13:56:50,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,276 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-05-04 13:56:50,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-05-04 13:56:50,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-05-04 13:56:50,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-05-04 13:56:50,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (1/1) ... [2023-05-04 13:56:50,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-04 13:56:50,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:56:50,322 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) [2023-05-04 13:56:50,336 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 [2023-05-04 13:56:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-05-04 13:56:50,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-05-04 13:56:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-05-04 13:56:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-05-04 13:56:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-05-04 13:56:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-05-04 13:56:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-05-04 13:56:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-05-04 13:56:50,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-05-04 13:56:50,371 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-05-04 13:56:50,499 INFO L235 CfgBuilder]: Building ICFG [2023-05-04 13:56:50,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-05-04 13:56:50,658 INFO L276 CfgBuilder]: Performing block encoding [2023-05-04 13:56:50,664 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-05-04 13:56:50,664 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-05-04 13:56:50,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 01:56:50 BoogieIcfgContainer [2023-05-04 13:56:50,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-05-04 13:56:50,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-05-04 13:56:50,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-05-04 13:56:50,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-05-04 13:56:50,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.05 01:56:49" (1/3) ... [2023-05-04 13:56:50,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9d862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.05 01:56:50, skipping insertion in model container [2023-05-04 13:56:50,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 01:56:50" (2/3) ... [2023-05-04 13:56:50,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9d862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.05 01:56:50, skipping insertion in model container [2023-05-04 13:56:50,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 01:56:50" (3/3) ... [2023-05-04 13:56:50,701 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-05-04 13:56:50,708 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-05-04 13:56:50,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-05-04 13:56:50,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-05-04 13:56:50,715 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-05-04 13:56:50,794 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-05-04 13:56:50,829 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:56:50,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-04 13:56:50,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:56:50,832 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) [2023-05-04 13:56:50,833 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 [2023-05-04 13:56:50,864 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-04 13:56:50,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-05-04 13:56:50,885 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@396c0dba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 13:56:50,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-04 13:56:51,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:56:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:56:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2001412120, now seen corresponding path program 1 times [2023-05-04 13:56:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:56:51,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731351495] [2023-05-04 13:56:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:56:51,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:56:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:56:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-05-04 13:56:51,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:56:51,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731351495] [2023-05-04 13:56:51,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731351495] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:56:51,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:56:51,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-04 13:56:51,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266868092] [2023-05-04 13:56:51,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:56:51,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-04 13:56:51,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:56:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-04 13:56:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-05-04 13:56:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:51,271 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:56:51,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2023-05-04 13:56:51,272 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:51,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-05-04 13:56:51,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:56:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:56:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1656058313, now seen corresponding path program 1 times [2023-05-04 13:56:51,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:56:51,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154048131] [2023-05-04 13:56:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:56:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:56:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:56:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:56:51,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:56:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154048131] [2023-05-04 13:56:51,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154048131] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 13:56:51,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 13:56:51,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-05-04 13:56:51,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820599936] [2023-05-04 13:56:51,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 13:56:51,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-05-04 13:56:51,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:56:51,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-05-04 13:56:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-05-04 13:56:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:51,573 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:56:51,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2023-05-04 13:56:51,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:51,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:56:51,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-05-04 13:56:51,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:56:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:56:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 640676576, now seen corresponding path program 1 times [2023-05-04 13:56:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:56:51,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233647443] [2023-05-04 13:56:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:56:51,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:56:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:56:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:56:51,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:56:51,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233647443] [2023-05-04 13:56:51,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233647443] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-04 13:56:51,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171117825] [2023-05-04 13:56:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:56:51,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:56:51,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:56:51,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-04 13:56:51,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-05-04 13:56:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:56:52,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-05-04 13:56:52,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-04 13:56:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:56:52,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-04 13:56:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:56:52,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171117825] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-04 13:56:52,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-04 13:56:52,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-05-04 13:56:52,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407247251] [2023-05-04 13:56:52,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-04 13:56:52,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-05-04 13:56:52,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:56:52,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-05-04 13:56:52,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-05-04 13:56:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:52,191 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:56:52,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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) [2023-05-04 13:56:52,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:52,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:56:52,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:56:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-05-04 13:56:52,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-05-04 13:56:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-05-04 13:56:52,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:56:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:56:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash 869320877, now seen corresponding path program 1 times [2023-05-04 13:56:52,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:56:52,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993296824] [2023-05-04 13:56:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:56:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:56:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:56:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:56:52,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 13:56:52,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993296824] [2023-05-04 13:56:52,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993296824] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-04 13:56:52,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462716407] [2023-05-04 13:56:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:56:52,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:56:52,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 13:56:52,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-05-04 13:56:52,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-05-04 13:56:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 13:56:52,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-05-04 13:56:52,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-04 13:56:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:56:52,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-04 13:56:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 13:56:53,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462716407] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-04 13:56:53,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-04 13:56:53,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-05-04 13:56:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199890370] [2023-05-04 13:56:53,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-04 13:56:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-05-04 13:56:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 13:56:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-05-04 13:56:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-05-04 13:56:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:53,057 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 13:56:53,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2023-05-04 13:56:53,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:53,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:56:53,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-05-04 13:56:53,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 13:56:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 13:56:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-05-04 13:56:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-05-04 13:56:53,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-05-04 13:56:53,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-04 13:56:53,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 13:56:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 13:56:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1760906609, now seen corresponding path program 1 times [2023-05-04 13:56:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 13:56:53,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885845969] [2023-05-04 13:56:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 13:56:53,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 13:56:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 13:56:53,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-05-04 13:56:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 13:56:53,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-05-04 13:56:53,688 INFO L359 BasicCegarLoop]: Counterexample is feasible [2023-05-04 13:56:53,689 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-04 13:56:53,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-05-04 13:56:53,696 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-05-04 13:56:53,698 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2023-05-04 13:56:53,701 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-05-04 13:56:53,701 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-05-04 13:56:53,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.05 01:56:53 BasicIcfg [2023-05-04 13:56:53,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-05-04 13:56:53,744 INFO L158 Benchmark]: Toolchain (without parser) took 4025.15ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 127.9MB in the beginning and 75.7MB in the end (delta: 52.2MB). Peak memory consumption was 91.0MB. Max. memory is 8.0GB. [2023-05-04 13:56:53,744 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-05-04 13:56:53,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.36ms. Allocated memory is still 184.5MB. Free memory was 127.7MB in the beginning and 149.8MB in the end (delta: -22.1MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2023-05-04 13:56:53,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.72ms. Allocated memory is still 184.5MB. Free memory was 149.8MB in the beginning and 147.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-05-04 13:56:53,745 INFO L158 Benchmark]: Boogie Preprocessor took 36.45ms. Allocated memory is still 184.5MB. Free memory was 147.8MB in the beginning and 146.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-05-04 13:56:53,746 INFO L158 Benchmark]: RCFGBuilder took 397.82ms. Allocated memory is still 184.5MB. Free memory was 146.4MB in the beginning and 134.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-05-04 13:56:53,746 INFO L158 Benchmark]: TraceAbstraction took 3063.16ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 133.2MB in the beginning and 75.7MB in the end (delta: 57.5MB). Peak memory consumption was 95.6MB. Max. memory is 8.0GB. [2023-05-04 13:56:53,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 472.36ms. Allocated memory is still 184.5MB. Free memory was 127.7MB in the beginning and 149.8MB in the end (delta: -22.1MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.72ms. Allocated memory is still 184.5MB. Free memory was 149.8MB in the beginning and 147.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.45ms. Allocated memory is still 184.5MB. Free memory was 147.8MB in the beginning and 146.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 397.82ms. Allocated memory is still 184.5MB. Free memory was 146.4MB in the beginning and 134.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3063.16ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 133.2MB in the beginning and 75.7MB in the end (delta: 57.5MB). Peak memory consumption was 95.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 856, independent: 738, independent conditional: 86, independent unconditional: 652, dependent: 118, dependent conditional: 116, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 86, independent unconditional: 652, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 86, independent unconditional: 652, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 740, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 606, independent: 604, independent conditional: 0, independent unconditional: 604, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 606, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 6, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 740, independent: 134, independent conditional: 0, independent unconditional: 134, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 606, unknown conditional: 0, unknown unconditional: 606] , Statistics on independence cache: Total cache size (in pairs): 606, Positive cache size: 604, Positive conditional cache size: 0, Positive unconditional cache size: 604, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 116 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 79, Number of trivial persistent sets: 70, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 654, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 856, independent: 738, independent conditional: 86, independent unconditional: 652, dependent: 118, dependent conditional: 116, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 86, independent unconditional: 652, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 86, independent unconditional: 652, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 740, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 740, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 606, independent: 604, independent conditional: 0, independent unconditional: 604, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 606, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 6, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 740, independent: 134, independent conditional: 0, independent unconditional: 134, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 606, unknown conditional: 0, unknown unconditional: 606] , Statistics on independence cache: Total cache size (in pairs): 606, Positive cache size: 604, Positive conditional cache size: 0, Positive unconditional cache size: 604, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 116 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 VAL [t={3:0}] [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=0, arg={0:0}, arg={0:0}, x=0] [L701] COND TRUE 0 1 VAL [arg={0:0}, arg={0:0}, t={3:0}, x=0] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=4294967301, arg={0:0}, arg={0:0}, x=0, y=4294967301] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=5, arg={0:0}, arg={0:0}, x=0, y=4294967301, z=5] [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [__VERIFIER_nondet_uint()=5, arg={0:0}, arg={0:0}, pthread_create(&t, 0, thr1, 0)=0, t={3:0}, x=0, y=4294967301, z=5] [L687] 1 int i, j=1, k=1; VAL [arg={0:0}, arg={0:0}, j=1, k=1, x=0, y=4294967301, z=5] [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1, x=0, y=4294967301, z=5] [L688] COND FALSE 1 !(i