/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-LoopLockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-ba0fd47f62a02cd5486659f03d300faf678a2e90-ba0fd47 [2021-11-14 12:20:58,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-14 12:20:58,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-14 12:20:58,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-14 12:20:58,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-14 12:20:58,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-14 12:20:58,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-14 12:20:58,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-14 12:20:58,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-14 12:20:58,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-14 12:20:58,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-14 12:20:58,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-14 12:20:58,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-14 12:20:58,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-14 12:20:58,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-14 12:20:58,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-14 12:20:58,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-14 12:20:58,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-14 12:20:58,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-14 12:20:58,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-14 12:20:58,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-14 12:20:58,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-14 12:20:58,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-14 12:20:58,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-14 12:20:58,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-14 12:20:58,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-14 12:20:58,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-14 12:20:58,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-14 12:20:58,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-14 12:20:58,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-14 12:20:58,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-14 12:20:58,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-14 12:20:58,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-14 12:20:58,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-14 12:20:58,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-14 12:20:58,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-14 12:20:58,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-14 12:20:58,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-14 12:20:58,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-14 12:20:58,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-14 12:20:58,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-14 12:20:58,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-LoopLockstep.epf [2021-11-14 12:20:58,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-14 12:20:58,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-14 12:20:58,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-14 12:20:58,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-14 12:20:58,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-14 12:20:58,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-14 12:20:58,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-14 12:20:58,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-14 12:20:58,561 INFO L138 SettingsManager]: * Use SBE=true [2021-11-14 12:20:58,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-14 12:20:58,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-14 12:20:58,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-14 12:20:58,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-14 12:20:58,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-14 12:20:58,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-14 12:20:58,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-14 12:20:58,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-14 12:20:58,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-14 12:20:58,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-14 12:20:58,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-14 12:20:58,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-14 12:20:58,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-14 12:20:58,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-14 12:20:58,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-11-14 12:20:58,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-14 12:20:58,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-14 12:20:58,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-14 12:20:58,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-14 12:20:58,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-14 12:20:58,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-11-14 12:20:58,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-11-14 12:20:58,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-14 12:20:58,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-14 12:20:58,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-14 12:20:58,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-14 12:20:58,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-14 12:20:58,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i [2021-11-14 12:20:58,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a9f9ebc/77e69a52c1844d158854969e2997b596/FLAG851ffdbb4 [2021-11-14 12:20:59,177 INFO L306 CDTParser]: Found 1 translation units. [2021-11-14 12:20:59,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i [2021-11-14 12:20:59,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a9f9ebc/77e69a52c1844d158854969e2997b596/FLAG851ffdbb4 [2021-11-14 12:20:59,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a9f9ebc/77e69a52c1844d158854969e2997b596 [2021-11-14 12:20:59,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-14 12:20:59,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-14 12:20:59,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-14 12:20:59,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-14 12:20:59,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-14 12:20:59,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:20:59,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8fb220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59, skipping insertion in model container [2021-11-14 12:20:59,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:20:59,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-14 12:20:59,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-14 12:20:59,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i[30190,30203] [2021-11-14 12:20:59,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-14 12:20:59,904 INFO L203 MainTranslator]: Completed pre-run [2021-11-14 12:20:59,931 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i[30190,30203] [2021-11-14 12:20:59,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-14 12:20:59,956 INFO L208 MainTranslator]: Completed translation [2021-11-14 12:20:59,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59 WrapperNode [2021-11-14 12:20:59,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-14 12:20:59,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-14 12:20:59,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-14 12:20:59,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-14 12:20:59,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:20:59,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:20:59,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-14 12:20:59,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-14 12:20:59,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-14 12:20:59,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-14 12:20:59,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:20:59,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:20:59,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:20:59,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:21:00,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:21:00,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:21:00,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:21:00,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-14 12:21:00,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-14 12:21:00,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-14 12:21:00,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-14 12:21:00,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (1/1) ... [2021-11-14 12:21:00,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-14 12:21:00,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:00,037 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) [2021-11-14 12:21:00,042 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 [2021-11-14 12:21:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-14 12:21:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2021-11-14 12:21:00,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2021-11-14 12:21:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-14 12:21:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-14 12:21:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-14 12:21:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-14 12:21:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-14 12:21:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2021-11-14 12:21:00,110 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2021-11-14 12:21:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-14 12:21:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-14 12:21:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-14 12:21:00,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-14 12:21:00,112 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-14 12:21:00,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-14 12:21:00,414 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-14 12:21:00,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 12:21:00 BoogieIcfgContainer [2021-11-14 12:21:00,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-14 12:21:00,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-14 12:21:00,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-14 12:21:00,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-14 12:21:00,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 12:20:59" (1/3) ... [2021-11-14 12:21:00,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656b571f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 12:21:00, skipping insertion in model container [2021-11-14 12:21:00,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 12:20:59" (2/3) ... [2021-11-14 12:21:00,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656b571f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 12:21:00, skipping insertion in model container [2021-11-14 12:21:00,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 12:21:00" (3/3) ... [2021-11-14 12:21:00,422 INFO L111 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-10.i [2021-11-14 12:21:00,426 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-14 12:21:00,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-14 12:21:00,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-14 12:21:00,427 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-14 12:21:00,445 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,445 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,446 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,446 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,446 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,446 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,446 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,446 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,446 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,447 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,447 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,447 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,447 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,447 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,447 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,447 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,448 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,448 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,448 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,448 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,448 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,448 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,459 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,459 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,462 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,462 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,462 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,462 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,464 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,465 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,465 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,465 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:00,467 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-14 12:21:00,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:00,503 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) [2021-11-14 12:21:00,563 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 [2021-11-14 12:21:00,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2021-11-14 12:21:00,579 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, 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 [2021-11-14 12:21:00,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:00,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash -211201094, now seen corresponding path program 1 times [2021-11-14 12:21:00,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:00,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219305475] [2021-11-14 12:21:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:00,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:00,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219305475] [2021-11-14 12:21:00,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219305475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:00,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:00,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:00,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963531232] [2021-11-14 12:21:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:00,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:00,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:00,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:00,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:00,895 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:00,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:00,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:00,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:00,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-14 12:21:00,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -407714599, now seen corresponding path program 1 times [2021-11-14 12:21:00,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:00,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819943858] [2021-11-14 12:21:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:00,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:01,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:01,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819943858] [2021-11-14 12:21:01,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819943858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:01,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:01,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:01,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890688800] [2021-11-14 12:21:01,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:01,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:01,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,007 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:01,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:01,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:01,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-14 12:21:01,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2025312585, now seen corresponding path program 1 times [2021-11-14 12:21:01,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:01,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309033486] [2021-11-14 12:21:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:01,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:01,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:01,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309033486] [2021-11-14 12:21:01,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309033486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:01,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015536139] [2021-11-14 12:21:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:01,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:01,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:01,200 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) [2021-11-14 12:21:01,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-14 12:21:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:01,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:01,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:01,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:01,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015536139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:01,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:01,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:01,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758842566] [2021-11-14 12:21:01,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:01,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:01,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,541 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:01,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:01,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:01,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-14 12:21:01,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-14 12:21:01,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-14 12:21:01,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-14 12:21:01,858 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-14 12:21:01,859 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was SAFE (1/2) [2021-11-14 12:21:01,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:01,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:01,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:01,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2021-11-14 12:21:02,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-14 12:21:02,111 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, 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 [2021-11-14 12:21:02,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-14 12:21:02,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 889598928, now seen corresponding path program 1 times [2021-11-14 12:21:02,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:02,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809030865] [2021-11-14 12:21:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:02,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:02,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:02,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809030865] [2021-11-14 12:21:02,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809030865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:02,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:02,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:02,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286548226] [2021-11-14 12:21:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:02,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:02,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:02,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,175 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:02,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 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) [2021-11-14 12:21:02,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-14 12:21:02,182 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1100949841, now seen corresponding path program 1 times [2021-11-14 12:21:02,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:02,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751763460] [2021-11-14 12:21:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:02,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:02,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:02,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751763460] [2021-11-14 12:21:02,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751763460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:02,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:02,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:02,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781048223] [2021-11-14 12:21:02,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:02,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:02,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:02,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:02,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,202 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:02,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2021-11-14 12:21:02,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:02,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-14 12:21:02,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -51185951, now seen corresponding path program 1 times [2021-11-14 12:21:02,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:02,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853384756] [2021-11-14 12:21:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:02,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:02,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:02,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853384756] [2021-11-14 12:21:02,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853384756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:02,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837307061] [2021-11-14 12:21:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:02,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:02,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:02,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:02,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-14 12:21:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:02,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:02,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:02,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:02,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837307061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:02,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:02,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:02,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084467957] [2021-11-14 12:21:02,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:02,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:02,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,561 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:02,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:02,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:02,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-14 12:21:02,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:02,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:02,812 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash -809257032, now seen corresponding path program 1 times [2021-11-14 12:21:02,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:02,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036706120] [2021-11-14 12:21:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:02,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:02,821 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-14 12:21:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:02,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-14 12:21:02,849 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-14 12:21:02,849 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 2 remaining) [2021-11-14 12:21:02,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-11-14 12:21:02,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-14 12:21:02,852 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-14 12:21:02,852 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2021-11-14 12:21:02,852 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-14 12:21:02,853 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-11-14 12:21:02,863 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,863 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,863 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,863 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,864 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,865 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,865 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,865 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,865 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,865 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,865 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,866 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,866 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,866 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,867 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,868 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,869 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,873 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,874 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,874 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,874 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,874 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,874 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,875 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,875 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,875 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,875 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,875 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,875 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,875 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,876 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:02,879 INFO L148 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2021-11-14 12:21:02,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:02,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:02,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2021-11-14 12:21:02,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of2ForFork1 ======== [2021-11-14 12:21:02,884 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, 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 [2021-11-14 12:21:02,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:02,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash -341074863, now seen corresponding path program 1 times [2021-11-14 12:21:02,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:02,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055683299] [2021-11-14 12:21:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:02,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:02,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:02,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055683299] [2021-11-14 12:21:02,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055683299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:02,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:02,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:02,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843193296] [2021-11-14 12:21:02,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:02,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:02,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:02,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:02,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:02,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,937 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:02,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:02,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-14 12:21:02,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash -537588368, now seen corresponding path program 1 times [2021-11-14 12:21:02,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:02,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528926419] [2021-11-14 12:21:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:02,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:02,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:02,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528926419] [2021-11-14 12:21:02,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528926419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:02,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:02,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:02,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518017465] [2021-11-14 12:21:02,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:02,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:02,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:02,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,966 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:02,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:02,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:02,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:03,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-14 12:21:03,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1185139879, now seen corresponding path program 1 times [2021-11-14 12:21:03,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:03,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127011591] [2021-11-14 12:21:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:03,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:03,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:03,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127011591] [2021-11-14 12:21:03,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127011591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:03,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83962523] [2021-11-14 12:21:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:03,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:03,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:03,033 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:03,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-14 12:21:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:03,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:03,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:03,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:03,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83962523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:03,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:03,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:03,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895697335] [2021-11-14 12:21:03,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:03,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:03,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,224 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:03,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-14 12:21:03,353 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-14 12:21:03,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:03,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:03,568 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-14 12:21:03,569 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread1of2ForFork1 was SAFE (1/3) [2021-11-14 12:21:03,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:03,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:03,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:03,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2021-11-14 12:21:03,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread2of2ForFork1 ======== [2021-11-14 12:21:03,573 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, 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 [2021-11-14 12:21:03,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:03,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:03,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:03,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1877390047, now seen corresponding path program 1 times [2021-11-14 12:21:03,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:03,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187493655] [2021-11-14 12:21:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:03,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:03,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:03,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187493655] [2021-11-14 12:21:03,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187493655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:03,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:03,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:03,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791241806] [2021-11-14 12:21:03,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:03,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:03,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,620 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:03,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:03,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-14 12:21:03,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:03,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1810383294, now seen corresponding path program 1 times [2021-11-14 12:21:03,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:03,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679283210] [2021-11-14 12:21:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:03,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:03,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:03,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679283210] [2021-11-14 12:21:03,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679283210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:03,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:03,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:03,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699242141] [2021-11-14 12:21:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:03,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:03,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,640 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:03,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:03,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:03,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-14 12:21:03,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1004643353, now seen corresponding path program 1 times [2021-11-14 12:21:03,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:03,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277946890] [2021-11-14 12:21:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:03,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:03,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:03,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277946890] [2021-11-14 12:21:03,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277946890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:03,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116741415] [2021-11-14 12:21:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:03,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:03,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:03,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:03,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-14 12:21:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:03,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:03,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:03,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:03,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-14 12:21:03,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116741415] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:03,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:03,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:03,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594437302] [2021-11-14 12:21:03,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:03,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:03,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:03,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,944 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:03,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:03,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:03,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:03,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-14 12:21:04,041 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-14 12:21:04,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:04,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-14 12:21:04,256 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-14 12:21:04,256 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread2of2ForFork1 was SAFE (2/3) [2021-11-14 12:21:04,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:04,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:04,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2021-11-14 12:21:04,262 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-14 12:21:04,262 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, 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 [2021-11-14 12:21:04,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-14 12:21:04,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:04,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -537437102, now seen corresponding path program 1 times [2021-11-14 12:21:04,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:04,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563276734] [2021-11-14 12:21:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:04,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:04,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:04,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563276734] [2021-11-14 12:21:04,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563276734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:04,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:04,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:04,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189524493] [2021-11-14 12:21:04,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:04,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:04,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,308 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:04,308 INFO L471 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) [2021-11-14 12:21:04,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-14 12:21:04,311 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1188043795, now seen corresponding path program 1 times [2021-11-14 12:21:04,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:04,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188131572] [2021-11-14 12:21:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:04,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:04,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:04,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188131572] [2021-11-14 12:21:04,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188131572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:04,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:04,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:04,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807490854] [2021-11-14 12:21:04,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:04,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:04,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:04,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,328 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:04,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2021-11-14 12:21:04,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:04,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-14 12:21:04,351 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash 387530314, now seen corresponding path program 1 times [2021-11-14 12:21:04,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:04,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038959682] [2021-11-14 12:21:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:04,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:04,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:04,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038959682] [2021-11-14 12:21:04,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038959682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:04,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13693594] [2021-11-14 12:21:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:04,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:04,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:04,376 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:04,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-14 12:21:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:04,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:04,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:04,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:04,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13693594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:04,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:04,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:04,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459205973] [2021-11-14 12:21:04,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:04,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:04,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,621 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:04,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:04,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:04,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-14 12:21:04,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:04,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-14 12:21:04,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1103714139, now seen corresponding path program 1 times [2021-11-14 12:21:04,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:04,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236177979] [2021-11-14 12:21:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:04,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:04,876 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-14 12:21:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:04,888 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-14 12:21:04,888 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-14 12:21:04,888 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 2 remaining) [2021-11-14 12:21:04,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-11-14 12:21:04,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-14 12:21:04,889 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-14 12:21:04,889 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (3/3) [2021-11-14 12:21:04,889 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-14 12:21:04,890 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-11-14 12:21:04,894 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,895 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,896 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,897 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,898 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,899 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,900 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,901 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,902 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:04,903 INFO L148 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2021-11-14 12:21:04,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:04,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:04,904 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:04,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2021-11-14 12:21:04,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-14 12:21:04,909 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, 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 [2021-11-14 12:21:04,909 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-14 12:21:04,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1469739100, now seen corresponding path program 1 times [2021-11-14 12:21:04,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:04,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436810469] [2021-11-14 12:21:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:04,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:04,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:04,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436810469] [2021-11-14 12:21:04,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436810469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:04,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:04,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:04,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575664642] [2021-11-14 12:21:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:04,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:04,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,964 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:04,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:04,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-14 12:21:04,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1477498459, now seen corresponding path program 1 times [2021-11-14 12:21:04,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:04,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383412288] [2021-11-14 12:21:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:04,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:04,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:04,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383412288] [2021-11-14 12:21:04,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383412288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:04,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:04,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:04,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814399443] [2021-11-14 12:21:04,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:04,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:04,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:04,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,986 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:04,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:04,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:04,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:05,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-14 12:21:05,018 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 110372144, now seen corresponding path program 1 times [2021-11-14 12:21:05,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:05,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902143440] [2021-11-14 12:21:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:05,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:05,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:05,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902143440] [2021-11-14 12:21:05,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902143440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:05,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165312704] [2021-11-14 12:21:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:05,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:05,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:05,059 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:05,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-14 12:21:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:05,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:05,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:05,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:05,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165312704] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:05,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:05,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:05,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781075448] [2021-11-14 12:21:05,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:05,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:05,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:05,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:05,327 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:05,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:05,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:05,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:05,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:05,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:05,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:05,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1358272628, now seen corresponding path program 1 times [2021-11-14 12:21:05,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:05,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240893123] [2021-11-14 12:21:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:05,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-14 12:21:05,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:05,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240893123] [2021-11-14 12:21:05,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240893123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:05,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677562984] [2021-11-14 12:21:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:05,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:05,668 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:05,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-14 12:21:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:05,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-14 12:21:05,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:05,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:06,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677562984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:06,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:06,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2021-11-14 12:21:06,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311055093] [2021-11-14 12:21:06,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:06,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-14 12:21:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-14 12:21:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-14 12:21:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,185 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:06,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.789473684210526) internal successors, (186), 19 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:06,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:06,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:06,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-14 12:21:06,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:06,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-14 12:21:06,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash -394870116, now seen corresponding path program 1 times [2021-11-14 12:21:06,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:06,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25997291] [2021-11-14 12:21:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:06,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:06,484 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-14 12:21:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:06,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-14 12:21:06,505 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-14 12:21:06,505 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-11-14 12:21:06,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 2 remaining) [2021-11-14 12:21:06,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-14 12:21:06,506 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-14 12:21:06,506 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/4) [2021-11-14 12:21:06,506 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-14 12:21:06,506 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,517 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,518 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,519 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,519 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,520 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,521 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,522 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,523 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,524 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,524 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,524 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,524 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,524 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,524 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,524 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,527 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,528 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,529 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,530 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,531 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,531 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:06,532 INFO L148 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-11-14 12:21:06,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:06,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:06,548 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:06,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2021-11-14 12:21:06,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread4of4ForFork1 ======== [2021-11-14 12:21:06,551 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, 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 [2021-11-14 12:21:06,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:06,619 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:06,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1829361734, now seen corresponding path program 1 times [2021-11-14 12:21:06,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:06,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735162972] [2021-11-14 12:21:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:06,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:06,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:06,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735162972] [2021-11-14 12:21:06,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735162972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:06,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:06,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:06,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20783975] [2021-11-14 12:21:06,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:06,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:06,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,630 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:06,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:06,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-14 12:21:06,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1060191719, now seen corresponding path program 1 times [2021-11-14 12:21:06,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:06,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386160920] [2021-11-14 12:21:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:06,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:06,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:06,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386160920] [2021-11-14 12:21:06,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386160920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:06,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:06,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:06,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838084470] [2021-11-14 12:21:06,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:06,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:06,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,648 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:06,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:06,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:06,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-14 12:21:06,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:06,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1649451298, now seen corresponding path program 1 times [2021-11-14 12:21:06,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:06,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714410053] [2021-11-14 12:21:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:06,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:06,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:06,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714410053] [2021-11-14 12:21:06,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714410053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:06,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078822088] [2021-11-14 12:21:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:06,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:06,720 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:06,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-14 12:21:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:06,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:06,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:06,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078822088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:07,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:07,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:07,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767949600] [2021-11-14 12:21:07,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:07,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:07,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:07,033 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:07,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:07,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:07,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:07,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:07,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:07,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:07,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:07,329 INFO L85 PathProgramCache]: Analyzing trace with hash -137869495, now seen corresponding path program 1 times [2021-11-14 12:21:07,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:07,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15213610] [2021-11-14 12:21:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:07,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-14 12:21:07,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:07,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15213610] [2021-11-14 12:21:07,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15213610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:07,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123744952] [2021-11-14 12:21:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:07,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:07,368 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:07,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-14 12:21:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:07,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-14 12:21:07,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:07,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:07,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123744952] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:07,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:07,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2021-11-14 12:21:07,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134856341] [2021-11-14 12:21:07,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:07,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-14 12:21:07,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-14 12:21:07,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-14 12:21:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:07,865 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:07,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:07,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:07,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:07,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:07,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-14 12:21:10,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-14 12:21:10,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:10,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-14 12:21:10,405 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-14 12:21:10,405 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread4of4ForFork1 was SAFE (1/5) [2021-11-14 12:21:10,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:10,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:10,408 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:10,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (18)] Waiting until timeout for monitored process [2021-11-14 12:21:10,410 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread3of4ForFork1 ======== [2021-11-14 12:21:10,411 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, 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 [2021-11-14 12:21:10,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:10,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash 814714362, now seen corresponding path program 1 times [2021-11-14 12:21:10,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:10,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479283538] [2021-11-14 12:21:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:10,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:10,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:10,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479283538] [2021-11-14 12:21:10,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479283538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:10,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:10,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:10,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429415393] [2021-11-14 12:21:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:10,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:10,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,485 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:10,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:10,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-14 12:21:10,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1847448935, now seen corresponding path program 1 times [2021-11-14 12:21:10,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:10,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514270844] [2021-11-14 12:21:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:10,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:10,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:10,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514270844] [2021-11-14 12:21:10,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514270844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:10,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:10,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:10,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774821864] [2021-11-14 12:21:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:10,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:10,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,509 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:10,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:10,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:10,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-14 12:21:10,548 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 406869022, now seen corresponding path program 1 times [2021-11-14 12:21:10,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:10,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756912661] [2021-11-14 12:21:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:10,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:10,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:10,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756912661] [2021-11-14 12:21:10,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756912661] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:10,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147337421] [2021-11-14 12:21:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:10,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:10,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:10,596 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:10,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-14 12:21:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:10,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:10,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:10,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:10,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147337421] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:10,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:10,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:10,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469156571] [2021-11-14 12:21:10,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:10,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:10,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:10,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,907 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:10,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:10,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:10,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:11,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:11,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-14 12:21:11,210 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1400405047, now seen corresponding path program 1 times [2021-11-14 12:21:11,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:11,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370789133] [2021-11-14 12:21:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:11,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-14 12:21:11,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:11,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370789133] [2021-11-14 12:21:11,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370789133] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:11,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624261903] [2021-11-14 12:21:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:11,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:11,329 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:11,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-14 12:21:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:11,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-14 12:21:11,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:11,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:11,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624261903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:11,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:11,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2021-11-14 12:21:11,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489361282] [2021-11-14 12:21:11,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:11,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-14 12:21:11,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-14 12:21:11,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-14 12:21:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:11,836 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:11,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.68421052631579) internal successors, (184), 19 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:11,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:11,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:11,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:11,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-14 12:21:13,743 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-14 12:21:13,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-14 12:21:13,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:13,953 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-14 12:21:13,953 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread3of4ForFork1 was SAFE (2/5) [2021-11-14 12:21:13,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:13,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:13,954 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:13,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2021-11-14 12:21:13,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-14 12:21:13,958 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, 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 [2021-11-14 12:21:13,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-14 12:21:14,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:14,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1148207270, now seen corresponding path program 1 times [2021-11-14 12:21:14,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:14,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068835537] [2021-11-14 12:21:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:14,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-14 12:21:14,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:14,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068835537] [2021-11-14 12:21:14,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068835537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:14,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:14,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:14,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733591104] [2021-11-14 12:21:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:14,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:14,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,029 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:14,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:14,030 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-14 12:21:14,034 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:14,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:14,035 INFO L85 PathProgramCache]: Analyzing trace with hash 939508967, now seen corresponding path program 1 times [2021-11-14 12:21:14,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:14,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10636773] [2021-11-14 12:21:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:14,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-14 12:21:14,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:14,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10636773] [2021-11-14 12:21:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10636773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:14,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:14,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:14,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136558938] [2021-11-14 12:21:14,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:14,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:14,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,049 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:14,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:14,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-14 12:21:14,079 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1147540734, now seen corresponding path program 1 times [2021-11-14 12:21:14,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:14,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769965681] [2021-11-14 12:21:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:14,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-14 12:21:14,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:14,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769965681] [2021-11-14 12:21:14,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769965681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:14,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272901326] [2021-11-14 12:21:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:14,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:14,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:14,104 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:14,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-14 12:21:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:14,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:14,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-14 12:21:14,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-14 12:21:14,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272901326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:14,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:14,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:14,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826369542] [2021-11-14 12:21:14,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:14,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:14,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,424 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:14,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:14,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:14,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:14,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:14,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-14 12:21:14,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash -677371465, now seen corresponding path program 1 times [2021-11-14 12:21:14,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:14,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002084579] [2021-11-14 12:21:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:14,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-14 12:21:14,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:14,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002084579] [2021-11-14 12:21:14,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002084579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:14,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731553161] [2021-11-14 12:21:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:14,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:14,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:14,764 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:14,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-14 12:21:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:14,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-14 12:21:14,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-14 12:21:15,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-14 12:21:15,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731553161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:15,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:15,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2021-11-14 12:21:15,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793297167] [2021-11-14 12:21:15,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:15,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-14 12:21:15,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-14 12:21:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-14 12:21:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,206 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:15,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.052631578947368) internal successors, (191), 19 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:15,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:15,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:15,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-14 12:21:15,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:15,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:15,524 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-14 12:21:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1056843702, now seen corresponding path program 1 times [2021-11-14 12:21:15,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:15,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254484262] [2021-11-14 12:21:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:15,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:15,532 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-14 12:21:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-14 12:21:15,552 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-14 12:21:15,553 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-14 12:21:15,553 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 2 remaining) [2021-11-14 12:21:15,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-11-14 12:21:15,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-14 12:21:15,554 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-14 12:21:15,554 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (3/5) [2021-11-14 12:21:15,554 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-14 12:21:15,554 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-11-14 12:21:15,566 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe setThreadThread5of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe setThreadThread5of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe setThreadThread5of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe setThreadThread5of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,567 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,568 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,569 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,570 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,571 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,572 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread5of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread5of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread5of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread5of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,573 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,574 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,574 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,574 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,574 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,574 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,574 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,574 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,652 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,653 WARN L322 ript$VariableManager]: TermVariabe setThreadThread5of5ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe setThreadThread5of5ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,654 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread5of5ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,655 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread5of5ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-14 12:21:15,657 INFO L148 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2021-11-14 12:21:15,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:15,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:15,658 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:15,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2021-11-14 12:21:15,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread3of5ForFork1 ======== [2021-11-14 12:21:15,661 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, 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 [2021-11-14 12:21:15,661 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:15,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:15,723 INFO L85 PathProgramCache]: Analyzing trace with hash -351814739, now seen corresponding path program 1 times [2021-11-14 12:21:15,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:15,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473315602] [2021-11-14 12:21:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:15,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:15,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:15,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473315602] [2021-11-14 12:21:15,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473315602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:15,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:15,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:15,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899925361] [2021-11-14 12:21:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:15,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:15,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:15,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,733 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:15,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:15,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-14 12:21:15,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:15,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:15,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1280989260, now seen corresponding path program 1 times [2021-11-14 12:21:15,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:15,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362086419] [2021-11-14 12:21:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:15,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:15,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:15,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362086419] [2021-11-14 12:21:15,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362086419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:15,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:15,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:15,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152086502] [2021-11-14 12:21:15,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:15,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:15,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,754 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:15,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:15,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:15,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-14 12:21:15,796 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:15,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040941, now seen corresponding path program 1 times [2021-11-14 12:21:15,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:15,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858001998] [2021-11-14 12:21:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:15,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:15,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:15,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858001998] [2021-11-14 12:21:15,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858001998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:15,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142609654] [2021-11-14 12:21:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:15,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:15,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:15,826 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:15,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-14 12:21:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:15,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:15,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:16,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:16,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142609654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:16,113 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:16,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:16,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145100457] [2021-11-14 12:21:16,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:16,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:16,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:16,114 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:16,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:16,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:16,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:16,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:16,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:16,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-14 12:21:16,419 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 366071832, now seen corresponding path program 1 times [2021-11-14 12:21:16,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:16,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316341738] [2021-11-14 12:21:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:16,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-14 12:21:16,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:16,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316341738] [2021-11-14 12:21:16,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316341738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:16,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248715854] [2021-11-14 12:21:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:16,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:16,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:16,446 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:16,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-14 12:21:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:16,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-14 12:21:16,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:16,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:16,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248715854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:16,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:16,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2021-11-14 12:21:16,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114844129] [2021-11-14 12:21:16,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:16,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-14 12:21:16,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-14 12:21:16,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-14 12:21:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:16,860 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:16,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.68421052631579) internal successors, (184), 19 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:16,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:16,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:16,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:16,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-14 12:21:30,708 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-14 12:21:30,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:30,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-14 12:21:30,910 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-14 12:21:30,910 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread3of5ForFork1 was SAFE (1/6) [2021-11-14 12:21:30,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:30,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:30,912 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:30,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (27)] Waiting until timeout for monitored process [2021-11-14 12:21:30,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread4of5ForFork1 ======== [2021-11-14 12:21:30,917 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, 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 [2021-11-14 12:21:30,917 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:30,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:30,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash -903161009, now seen corresponding path program 1 times [2021-11-14 12:21:30,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:30,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902341467] [2021-11-14 12:21:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:30,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:30,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:30,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902341467] [2021-11-14 12:21:30,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902341467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:30,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:30,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:30,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107139736] [2021-11-14 12:21:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:30,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:30,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:30,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:30,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:30,991 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:30,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:30,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:30,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-14 12:21:30,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash -133990994, now seen corresponding path program 1 times [2021-11-14 12:21:30,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:30,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941196079] [2021-11-14 12:21:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:30,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:31,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:31,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941196079] [2021-11-14 12:21:31,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941196079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:31,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:31,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:31,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715915930] [2021-11-14 12:21:31,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:31,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:31,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:31,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:31,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,011 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:31,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:31,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:31,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-14 12:21:31,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1393629711, now seen corresponding path program 1 times [2021-11-14 12:21:31,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:31,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925743441] [2021-11-14 12:21:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:31,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:31,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:31,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925743441] [2021-11-14 12:21:31,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925743441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:31,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586075629] [2021-11-14 12:21:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:31,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:31,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:31,071 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:31,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-14 12:21:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:31,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:31,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:31,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:31,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586075629] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:31,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:31,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:31,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367991130] [2021-11-14 12:21:31,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:31,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:31,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,384 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:31,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:31,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:31,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:31,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-14 12:21:31,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:31,673 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -25732998, now seen corresponding path program 1 times [2021-11-14 12:21:31,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:31,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203801590] [2021-11-14 12:21:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:31,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-14 12:21:31,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:31,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203801590] [2021-11-14 12:21:31,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203801590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:31,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062452452] [2021-11-14 12:21:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:31,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:31,700 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:31,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-14 12:21:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:31,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-14 12:21:31,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:31,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-14 12:21:32,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062452452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:32,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:32,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2021-11-14 12:21:32,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019977987] [2021-11-14 12:21:32,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:32,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-14 12:21:32,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:32,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-14 12:21:32,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-14 12:21:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:32,228 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:32,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:32,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:32,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:32,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:32,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-14 12:21:46,196 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-14 12:21:46,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-14 12:21:46,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:46,398 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-14 12:21:46,398 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread4of5ForFork1 was SAFE (2/6) [2021-11-14 12:21:46,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-14 12:21:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:46,404 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-14 12:21:46,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (30)] Waiting until timeout for monitored process [2021-11-14 12:21:46,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of5ForFork1 ======== [2021-11-14 12:21:46,409 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, 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 [2021-11-14 12:21:46,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-14 12:21:46,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1279268902, now seen corresponding path program 1 times [2021-11-14 12:21:46,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:46,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974012453] [2021-11-14 12:21:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:46,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:46,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:46,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974012453] [2021-11-14 12:21:46,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974012453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:46,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:46,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-14 12:21:46,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663794452] [2021-11-14 12:21:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:46,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-14 12:21:46,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-14 12:21:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-14 12:21:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,477 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:46,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:46,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-14 12:21:46,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1082755397, now seen corresponding path program 1 times [2021-11-14 12:21:46,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:46,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73778289] [2021-11-14 12:21:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:46,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:46,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:46,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73778289] [2021-11-14 12:21:46,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73778289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:46,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:46,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-14 12:21:46,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124121871] [2021-11-14 12:21:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:46,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-14 12:21:46,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-14 12:21:46,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-14 12:21:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,491 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:46,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:46,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:46,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-14 12:21:46,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:46,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash 432850662, now seen corresponding path program 1 times [2021-11-14 12:21:46,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:46,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449868405] [2021-11-14 12:21:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:46,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:46,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:46,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449868405] [2021-11-14 12:21:46,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449868405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-14 12:21:46,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279262176] [2021-11-14 12:21:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:46,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-14 12:21:46,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-14 12:21:46,559 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-14 12:21:46,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-14 12:21:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:46,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-14 12:21:46,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-14 12:21:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:46,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-14 12:21:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-14 12:21:46,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279262176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-14 12:21:46,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-14 12:21:46,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-14 12:21:46,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296366408] [2021-11-14 12:21:46,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-14 12:21:46,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-14 12:21:46,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:46,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-14 12:21:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-14 12:21:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,756 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:46,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:46,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:46,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:46,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-14 12:21:47,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-14 12:21:47,054 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-14 12:21:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-14 12:21:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash 176319249, now seen corresponding path program 1 times [2021-11-14 12:21:47,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-14 12:21:47,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134907774] [2021-11-14 12:21:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-14 12:21:47,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-14 12:21:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-14 12:21:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-14 12:21:47,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-14 12:21:47,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134907774] [2021-11-14 12:21:47,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134907774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-14 12:21:47,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-14 12:21:47,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-14 12:21:47,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894839212] [2021-11-14 12:21:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-14 12:21:47,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-14 12:21:47,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-14 12:21:47,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-14 12:21:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-14 12:21:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:47,080 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-14 12:21:47,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-14 12:21:47,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-14 12:21:47,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-14 12:21:47,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-14 12:21:47,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.