/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-19 23:58:52,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-19 23:58:52,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-19 23:58:52,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-19 23:58:52,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-19 23:58:52,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-19 23:58:52,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-19 23:58:52,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-19 23:58:52,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-19 23:58:52,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-19 23:58:52,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-19 23:58:52,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-19 23:58:52,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-19 23:58:52,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-19 23:58:52,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-19 23:58:52,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-19 23:58:52,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-19 23:58:52,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-19 23:58:52,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-19 23:58:52,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-19 23:58:52,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-19 23:58:52,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-19 23:58:52,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-19 23:58:52,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-19 23:58:52,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-19 23:58:52,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-19 23:58:52,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-19 23:58:52,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-19 23:58:52,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-19 23:58:52,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-19 23:58:52,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-19 23:58:52,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-19 23:58:52,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-19 23:58:52,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-19 23:58:52,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-19 23:58:52,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-19 23:58:52,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy.epf [2022-02-19 23:58:52,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-19 23:58:52,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-19 23:58:52,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-19 23:58:52,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-19 23:58:52,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-19 23:58:52,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-19 23:58:52,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-19 23:58:52,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-19 23:58:52,316 INFO L138 SettingsManager]: * Use SBE=true [2022-02-19 23:58:52,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-19 23:58:52,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-19 23:58:52,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 23:58:52,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-19 23:58:52,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-19 23:58:52,319 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-19 23:58:52,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-19 23:58:52,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-19 23:58:52,319 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-19 23:58:52,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-19 23:58:52,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-19 23:58:52,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-19 23:58:52,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-19 23:58:52,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-19 23:58:52,490 INFO L275 PluginConnector]: CDTParser initialized [2022-02-19 23:58:52,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i [2022-02-19 23:58:52,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327a0a9a4/3807c6be3f464f32aa5c9bf726076396/FLAG201aa0aa9 [2022-02-19 23:58:52,936 INFO L306 CDTParser]: Found 1 translation units. [2022-02-19 23:58:52,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i [2022-02-19 23:58:52,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327a0a9a4/3807c6be3f464f32aa5c9bf726076396/FLAG201aa0aa9 [2022-02-19 23:58:52,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327a0a9a4/3807c6be3f464f32aa5c9bf726076396 [2022-02-19 23:58:52,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-19 23:58:52,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-19 23:58:52,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-19 23:58:52,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-19 23:58:52,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-19 23:58:52,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 11:58:52" (1/1) ... [2022-02-19 23:58:52,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78801daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:52, skipping insertion in model container [2022-02-19 23:58:52,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 11:58:52" (1/1) ... [2022-02-19 23:58:52,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-19 23:58:53,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-19 23:58:53,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i[30811,30824] [2022-02-19 23:58:53,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-19 23:58:53,215 INFO L203 MainTranslator]: Completed pre-run [2022-02-19 23:58:53,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i[30811,30824] [2022-02-19 23:58:53,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-19 23:58:53,259 INFO L208 MainTranslator]: Completed translation [2022-02-19 23:58:53,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53 WrapperNode [2022-02-19 23:58:53,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-19 23:58:53,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-19 23:58:53,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-19 23:58:53,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-19 23:58:53,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,288 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-02-19 23:58:53,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-19 23:58:53,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-19 23:58:53,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-19 23:58:53,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-19 23:58:53,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-19 23:58:53,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-19 23:58:53,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-19 23:58:53,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-19 23:58:53,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (1/1) ... [2022-02-19 23:58:53,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 23:58:53,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 23:58:53,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-19 23:58:53,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-19 23:58:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-02-19 23:58:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-02-19 23:58:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-02-19 23:58:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-02-19 23:58:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-19 23:58:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-19 23:58:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-19 23:58:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-19 23:58:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-19 23:58:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-19 23:58:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-19 23:58:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-19 23:58:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-19 23:58:53,376 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-19 23:58:53,445 INFO L234 CfgBuilder]: Building ICFG [2022-02-19 23:58:53,446 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-19 23:58:53,550 INFO L275 CfgBuilder]: Performing block encoding [2022-02-19 23:58:53,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-19 23:58:53,555 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-19 23:58:53,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 11:58:53 BoogieIcfgContainer [2022-02-19 23:58:53,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-19 23:58:53,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-19 23:58:53,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-19 23:58:53,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-19 23:58:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 11:58:52" (1/3) ... [2022-02-19 23:58:53,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a11189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 11:58:53, skipping insertion in model container [2022-02-19 23:58:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 11:58:53" (2/3) ... [2022-02-19 23:58:53,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a11189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 11:58:53, skipping insertion in model container [2022-02-19 23:58:53,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 11:58:53" (3/3) ... [2022-02-19 23:58:53,561 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2022-02-19 23:58:53,565 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-19 23:58:53,565 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-19 23:58:53,565 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-19 23:58:53,565 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-19 23:58:53,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,590 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,590 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,590 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,590 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,593 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,594 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,594 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,594 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,594 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,595 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,595 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,595 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,595 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,596 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,596 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,598 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,598 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,598 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,598 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,599 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,601 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,601 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 23:58:53,602 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-19 23:58:53,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 23:58:53,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 23:58:53,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-19 23:58:53,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-19 23:58:53,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-19 23:58:53,667 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-19 23:58:53,667 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-19 23:58:53,722 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-02-19 23:58:53,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 23:58:53,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 23:58:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-02-19 23:58:53,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 23:58:53,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046457771] [2022-02-19 23:58:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 23:58:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 23:58:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 23:58:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:53,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 23:58:53,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046457771] [2022-02-19 23:58:53,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046457771] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 23:58:53,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 23:58:53,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-19 23:58:53,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353416200] [2022-02-19 23:58:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 23:58:53,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-19 23:58:53,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 23:58:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-19 23:58:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-19 23:58:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:53,990 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 23:58:53,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-19 23:58:53,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,021 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-02-19 23:58:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-19 23:58:54,023 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 23:58:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 23:58:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-02-19 23:58:54,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 23:58:54,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265358810] [2022-02-19 23:58:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 23:58:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 23:58:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 23:58:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:54,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 23:58:54,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265358810] [2022-02-19 23:58:54,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265358810] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 23:58:54,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 23:58:54,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-19 23:58:54,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295124836] [2022-02-19 23:58:54,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 23:58:54,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 23:58:54,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 23:58:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 23:58:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 23:58:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,140 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 23:58:54,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-19 23:58:54,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,209 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 114 transitions and produced 115 states. [2022-02-19 23:58:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 23:58:54,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-19 23:58:54,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 23:58:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 23:58:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-02-19 23:58:54,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 23:58:54,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144758050] [2022-02-19 23:58:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 23:58:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 23:58:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 23:58:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:54,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 23:58:54,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144758050] [2022-02-19 23:58:54,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144758050] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 23:58:54,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447915419] [2022-02-19 23:58:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 23:58:54,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 23:58:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 23:58:54,282 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) [2022-02-19 23:58:54,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-19 23:58:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 23:58:54,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-19 23:58:54,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 23:58:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:54,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 23:58:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:54,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447915419] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 23:58:54,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 23:58:54,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-19 23:58:54,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605654439] [2022-02-19 23:58:54,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 23:58:54,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-19 23:58:54,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 23:58:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-19 23:58:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-19 23:58:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,638 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 23:58:54,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-19 23:58:54,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 23:58:54,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,722 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 160 transitions and produced 161 states. [2022-02-19 23:58:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 23:58:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 23:58:54,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-19 23:58:54,935 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 [2022-02-19 23:58:54,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 23:58:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 23:58:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-02-19 23:58:54,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 23:58:54,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26358569] [2022-02-19 23:58:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 23:58:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 23:58:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 23:58:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:55,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 23:58:55,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26358569] [2022-02-19 23:58:55,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26358569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 23:58:55,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418180787] [2022-02-19 23:58:55,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-19 23:58:55,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 23:58:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 23:58:55,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-19 23:58:55,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-19 23:58:55,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-19 23:58:55,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 23:58:55,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-19 23:58:55,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 23:58:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:55,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 23:58:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:55,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418180787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 23:58:55,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 23:58:55,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-19 23:58:55,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006170720] [2022-02-19 23:58:55,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 23:58:55,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-19 23:58:55,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 23:58:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-19 23:58:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-02-19 23:58:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:55,409 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 23:58:55,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-19 23:58:55,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:55,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 23:58:55,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 23:58:55,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:55,541 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 252 transitions and produced 249 states. [2022-02-19 23:58:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 23:58:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 23:58:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 23:58:55,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-19 23:58:55,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 23:58:55,756 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 23:58:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 23:58:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-02-19 23:58:55,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 23:58:55,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709496474] [2022-02-19 23:58:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 23:58:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 23:58:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 23:58:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:55,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 23:58:55,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709496474] [2022-02-19 23:58:55,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709496474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 23:58:55,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284289976] [2022-02-19 23:58:55,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-19 23:58:55,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 23:58:55,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 23:58:55,895 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) [2022-02-19 23:58:55,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-19 23:58:55,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-19 23:58:55,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 23:58:55,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-19 23:58:55,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 23:58:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:56,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 23:58:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:56,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284289976] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 23:58:56,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 23:58:56,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-02-19 23:58:56,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781333283] [2022-02-19 23:58:56,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 23:58:56,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-19 23:58:56,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 23:58:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-19 23:58:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-02-19 23:58:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:56,446 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 23:58:56,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-19 23:58:56,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:56,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 23:58:56,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 23:58:56,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-19 23:58:56,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:56,878 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 436 transitions and produced 418 states. [2022-02-19 23:58:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 23:58:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 23:58:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 23:58:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 23:58:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-19 23:58:56,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-19 23:58:57,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 23:58:57,080 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 23:58:57,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 23:58:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 835265426, now seen corresponding path program 4 times [2022-02-19 23:58:57,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 23:58:57,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566820818] [2022-02-19 23:58:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 23:58:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 23:58:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 23:58:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:57,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 23:58:57,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566820818] [2022-02-19 23:58:57,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566820818] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 23:58:57,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019845265] [2022-02-19 23:58:57,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-19 23:58:57,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 23:58:57,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 23:58:57,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-19 23:58:57,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-19 23:58:57,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-19 23:58:57,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 23:58:57,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 50 conjunts are in the unsatisfiable core [2022-02-19 23:58:57,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 23:58:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 572 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 23:58:59,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 00:06:56,946 WARN L228 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-20 00:11:09,953 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~i~0_8 Int)) (or (forall ((v_~j~0_8 Int)) (or (forall ((v_~cur~0_30 Int)) (or (and (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse0 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse0 v_~cur~0_28 v_~cur~0_30 1 c_~cur~0)) (>= aux_mod_v_~cur~0_22_51 2) (< v_~cur~0_26 (+ (* 2 v_~cur~0_28) v_~cur~0_30 c_~cur~0)) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 11 v_~i~0_8) (+ .cse0 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28 v_~cur~0_30 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (< v_~prev~0_24 (+ v_~cur~0_28 v_~cur~0_26 v_~cur~0_30 c_~cur~0)) (< v_~cur~0_28 (+ (* 2 v_~cur~0_30) c_~cur~0)) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 23 (* 2 v_~i~0_8) aux_mod_v_~cur~0_22_51 (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~next~0_20_56)))) (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse1 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse1 v_~cur~0_28 v_~cur~0_30 1 c_~cur~0)) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 23 aux_mod_v_~cur~0_22_51 (* 2 v_~j~0_8) (* aux_mod_v_~next~0_20_56 2))) (>= aux_mod_v_~cur~0_22_51 2) (< v_~cur~0_26 (+ (* 2 v_~cur~0_28) v_~cur~0_30 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (< v_~prev~0_24 (+ v_~cur~0_28 v_~cur~0_26 v_~cur~0_30 c_~cur~0)) (< v_~cur~0_28 (+ (* 2 v_~cur~0_30) c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 11 v_~j~0_8) (+ .cse1 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28 v_~cur~0_30 c_~cur~0)))))) (< v_~cur~0_30 (+ c_~prev~0 c_~cur~0)))) (not (<= v_~j~0_8 1)))) (not (<= v_~i~0_8 1)))) is different from false Received shutdown request... [2022-02-20 00:13:20,253 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-20 00:13:20,255 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-20 00:13:20,270 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-20 00:13:20,271 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-20 00:13:20,270 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-20 00:13:20,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-20 00:13:20,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 00:13:20,456 WARN L594 AbstractCegarLoop]: Verification canceled: while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 4ms.. [2022-02-20 00:13:20,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-20 00:13:20,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-20 00:13:20,464 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-02-20 00:13:20,465 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-20 00:13:20,466 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 00:13:20,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 12:13:20 BasicIcfg [2022-02-20 00:13:20,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 00:13:20,468 INFO L158 Benchmark]: Toolchain (without parser) took 867509.90ms. Allocated memory was 192.9MB in the beginning and 328.2MB in the end (delta: 135.3MB). Free memory was 140.5MB in the beginning and 106.2MB in the end (delta: 34.3MB). Peak memory consumption was 179.0MB. Max. memory is 8.0GB. [2022-02-20 00:13:20,468 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-20 00:13:20,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.82ms. Allocated memory is still 192.9MB. Free memory was 140.3MB in the beginning and 158.8MB in the end (delta: -18.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-20 00:13:20,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.51ms. Allocated memory is still 192.9MB. Free memory was 158.8MB in the beginning and 157.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-20 00:13:20,468 INFO L158 Benchmark]: Boogie Preprocessor took 16.35ms. Allocated memory is still 192.9MB. Free memory was 157.2MB in the beginning and 155.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-20 00:13:20,469 INFO L158 Benchmark]: RCFGBuilder took 250.52ms. Allocated memory is still 192.9MB. Free memory was 155.7MB in the beginning and 143.0MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-20 00:13:20,469 INFO L158 Benchmark]: TraceAbstraction took 866909.98ms. Allocated memory was 192.9MB in the beginning and 328.2MB in the end (delta: 135.3MB). Free memory was 142.5MB in the beginning and 106.2MB in the end (delta: 36.3MB). Peak memory consumption was 181.2MB. Max. memory is 8.0GB. [2022-02-20 00:13:20,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 300.82ms. Allocated memory is still 192.9MB. Free memory was 140.3MB in the beginning and 158.8MB in the end (delta: -18.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.51ms. Allocated memory is still 192.9MB. Free memory was 158.8MB in the beginning and 157.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.35ms. Allocated memory is still 192.9MB. Free memory was 157.2MB in the beginning and 155.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 250.52ms. Allocated memory is still 192.9MB. Free memory was 155.7MB in the beginning and 143.0MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 866909.98ms. Allocated memory was 192.9MB in the beginning and 328.2MB in the end (delta: 135.3MB). Free memory was 142.5MB in the beginning and 106.2MB in the end (delta: 36.3MB). Peak memory consumption was 181.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 726]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 4ms.. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 4ms.. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 4ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 866.8s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 1285 SizeOfPredicates, 22 NumberOfNonLiveVariables, 552 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/537 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown