/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 09:27:12,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 09:27:12,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 09:27:12,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-04 09:27:12,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-04 09:27:12,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-04 09:27:12,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-04 09:27:12,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-04 09:27:12,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-04 09:27:12,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-04 09:27:12,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-04 09:27:12,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-04 09:27:12,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-04 09:27:12,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-04 09:27:12,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-04 09:27:12,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-04 09:27:12,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-04 09:27:12,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-04 09:27:12,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-04 09:27:12,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-04 09:27:12,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-04 09:27:12,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-04 09:27:12,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-04 09:27:12,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-04 09:27:12,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-04 09:27:12,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-04 09:27:12,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-04 09:27:12,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-04 09:27:12,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-04 09:27:12,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-04 09:27:12,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-04 09:27:12,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-04 09:27:12,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-04 09:27:12,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 09:27:12,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 09:27:12,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 09:27:12,416 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-MCRwithoutDepranks-Lazy.epf [2022-03-04 09:27:12,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 09:27:12,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 09:27:12,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 09:27:12,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 09:27:12,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 09:27:12,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 09:27:12,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 09:27:12,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 09:27:12,440 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 09:27:12,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 09:27:12,440 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 09:27:12,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 09:27:12,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 09:27:12,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 09:27:12,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 09:27:12,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 09:27:12,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 09:27:12,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 09:27:12,442 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 09:27:12,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 09:27:12,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 09:27:12,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 09:27:12,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 09:27:12,443 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 09:27:12,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 09:27:12,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 09:27:12,443 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-04 09:27:12,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 09:27:12,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 09:27:12,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 09:27:12,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 09:27:12,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-04 09:27:12,631 INFO L275 PluginConnector]: CDTParser initialized [2022-03-04 09:27:12,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-03-04 09:27:12,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e25f548/c5c23eabfe32460db3e97d2cb81eb562/FLAGc5e87ac46 [2022-03-04 09:27:13,040 INFO L306 CDTParser]: Found 1 translation units. [2022-03-04 09:27:13,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-03-04 09:27:13,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e25f548/c5c23eabfe32460db3e97d2cb81eb562/FLAGc5e87ac46 [2022-03-04 09:27:13,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e25f548/c5c23eabfe32460db3e97d2cb81eb562 [2022-03-04 09:27:13,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 09:27:13,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-04 09:27:13,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-04 09:27:13,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-04 09:27:13,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-04 09:27:13,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4722a509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13, skipping insertion in model container [2022-03-04 09:27:13,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-04 09:27:13,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-04 09:27:13,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2022-03-04 09:27:13,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-04 09:27:13,247 INFO L203 MainTranslator]: Completed pre-run [2022-03-04 09:27:13,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2022-03-04 09:27:13,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-04 09:27:13,275 INFO L208 MainTranslator]: Completed translation [2022-03-04 09:27:13,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13 WrapperNode [2022-03-04 09:27:13,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-04 09:27:13,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 09:27:13,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 09:27:13,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 09:27:13,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,311 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-03-04 09:27:13,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 09:27:13,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 09:27:13,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 09:27:13,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 09:27:13,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 09:27:13,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 09:27:13,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 09:27:13,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 09:27:13,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (1/1) ... [2022-03-04 09:27:13,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 09:27:13,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 09:27:13,377 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) [2022-03-04 09:27:13,391 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 [2022-03-04 09:27:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-04 09:27:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-04 09:27:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-04 09:27:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-04 09:27:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-04 09:27:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-04 09:27:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-04 09:27:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-04 09:27:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 09:27:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 09:27:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-04 09:27:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-04 09:27:13,408 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 09:27:13,456 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 09:27:13,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 09:27:13,557 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 09:27:13,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 09:27:13,562 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-04 09:27:13,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 09:27:13 BoogieIcfgContainer [2022-03-04 09:27:13,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 09:27:13,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 09:27:13,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 09:27:13,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 09:27:13,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:27:13" (1/3) ... [2022-03-04 09:27:13,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac5bd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:27:13, skipping insertion in model container [2022-03-04 09:27:13,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:27:13" (2/3) ... [2022-03-04 09:27:13,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac5bd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:27:13, skipping insertion in model container [2022-03-04 09:27:13,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 09:27:13" (3/3) ... [2022-03-04 09:27:13,569 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2022-03-04 09:27:13,573 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 09:27:13,573 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 09:27:13,573 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 09:27:13,573 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 09:27:13,595 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,600 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,600 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,604 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,604 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,604 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 09:27:13,608 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-04 09:27:13,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 09:27:13,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 09:27:13,638 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) [2022-03-04 09:27:13,639 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 [2022-03-04 09:27:13,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 09:27:13,681 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 [2022-03-04 09:27:13,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-04 09:27:13,771 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 115 transitions and produced 116 states. [2022-03-04 09:27:13,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 09:27:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 09:27:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2067545743, now seen corresponding path program 1 times [2022-03-04 09:27:13,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 09:27:13,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693503273] [2022-03-04 09:27:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:13,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 09:27:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:13,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 09:27:13,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693503273] [2022-03-04 09:27:13,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693503273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 09:27:13,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 09:27:13,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-04 09:27:13,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807239508] [2022-03-04 09:27:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 09:27:13,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-04 09:27:13,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 09:27:13,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-04 09:27:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-04 09:27:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:13,976 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 09:27:13,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 09:27:13,977 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,017 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 115 transitions and produced 116 states. [2022-03-04 09:27:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-04 09:27:14,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 09:27:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 09:27:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash -616048800, now seen corresponding path program 1 times [2022-03-04 09:27:14,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 09:27:14,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607936428] [2022-03-04 09:27:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 09:27:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:14,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 09:27:14,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607936428] [2022-03-04 09:27:14,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607936428] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 09:27:14,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 09:27:14,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-04 09:27:14,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137897651] [2022-03-04 09:27:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 09:27:14,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-04 09:27:14,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 09:27:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-04 09:27:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-04 09:27:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,231 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 09:27:14,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2022-03-04 09:27:14,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,438 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 248 transitions and produced 249 states. [2022-03-04 09:27:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:14,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-04 09:27:14,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 09:27:14,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 09:27:14,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1296779389, now seen corresponding path program 1 times [2022-03-04 09:27:14,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 09:27:14,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049998860] [2022-03-04 09:27:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 09:27:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:14,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 09:27:14,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049998860] [2022-03-04 09:27:14,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049998860] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 09:27:14,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 09:27:14,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-04 09:27:14,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686933343] [2022-03-04 09:27:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 09:27:14,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-04 09:27:14,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 09:27:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-04 09:27:14,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-04 09:27:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,534 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 09:27:14,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-03-04 09:27:14,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:14,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,785 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 857 transitions and produced 858 states. [2022-03-04 09:27:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:27:14,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-04 09:27:14,787 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 09:27:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 09:27:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1513570909, now seen corresponding path program 1 times [2022-03-04 09:27:14,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 09:27:14,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350287478] [2022-03-04 09:27:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:14,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 09:27:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:14,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 09:27:14,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350287478] [2022-03-04 09:27:14,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350287478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 09:27:14,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796266780] [2022-03-04 09:27:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:14,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 09:27:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 09:27:14,919 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) [2022-03-04 09:27:14,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-04 09:27:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:15,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-04 09:27:15,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 09:27:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:15,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 09:27:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:15,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796266780] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-04 09:27:15,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-04 09:27:15,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2022-03-04 09:27:15,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78455010] [2022-03-04 09:27:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 09:27:15,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-04 09:27:15,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 09:27:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-04 09:27:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-03-04 09:27:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:15,490 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 09:27:15,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-03-04 09:27:15,490 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:15,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:15,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:27:15,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:15,613 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 867 transitions and produced 868 states. [2022-03-04 09:27:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:27:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 09:27:15,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-04 09:27:15,834 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,SelfDestructingSolverStorable3 [2022-03-04 09:27:15,835 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 09:27:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 09:27:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2070325952, now seen corresponding path program 1 times [2022-03-04 09:27:15,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 09:27:15,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859750974] [2022-03-04 09:27:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:15,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 09:27:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:16,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 09:27:16,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859750974] [2022-03-04 09:27:16,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859750974] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 09:27:16,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830543304] [2022-03-04 09:27:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:16,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 09:27:16,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 09:27:16,005 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) [2022-03-04 09:27:16,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-04 09:27:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:16,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-04 09:27:16,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 09:27:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:16,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 09:27:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:16,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830543304] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 09:27:16,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 09:27:16,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-04 09:27:16,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667736036] [2022-03-04 09:27:16,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 09:27:16,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-04 09:27:16,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 09:27:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-04 09:27:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-03-04 09:27:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:16,569 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 09:27:16,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 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) [2022-03-04 09:27:16,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:16,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:16,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:27:16,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 09:27:16,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:55,750 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 42285 transitions and produced 40701 states. [2022-03-04 09:27:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:27:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 09:27:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-04 09:27:55,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-04 09:27:55,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 09:27:55,971 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 09:27:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 09:27:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 663577526, now seen corresponding path program 2 times [2022-03-04 09:27:55,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 09:27:55,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015237380] [2022-03-04 09:27:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:27:55,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 09:27:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:27:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:56,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 09:27:56,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015237380] [2022-03-04 09:27:56,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015237380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 09:27:56,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010542988] [2022-03-04 09:27:56,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 09:27:56,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 09:27:56,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 09:27:56,121 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) [2022-03-04 09:27:56,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-04 09:27:56,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 09:27:56,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 09:27:56,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-04 09:27:56,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 09:27:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:56,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 09:27:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:27:56,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010542988] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 09:27:56,717 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 09:27:56,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2022-03-04 09:27:56,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387207305] [2022-03-04 09:27:56,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 09:27:56,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-04 09:27:56,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 09:27:56,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-04 09:27:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2022-03-04 09:27:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:56,719 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 09:27:56,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.75) internal successors, (133), 28 states have internal predecessors, (133), 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) [2022-03-04 09:27:56,719 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:27:56,719 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:27:56,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:27:56,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 09:27:56,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-03-04 09:27:56,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:28:56,574 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 52974 transitions and produced 42890 states. [2022-03-04 09:28:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:28:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:28:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:28:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 09:28:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-04 09:28:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-04 09:28:56,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-04 09:28:56,783 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 [2022-03-04 09:28:56,784 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 09:28:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 09:28:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash 729075038, now seen corresponding path program 3 times [2022-03-04 09:28:56,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 09:28:56,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876693978] [2022-03-04 09:28:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 09:28:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 09:28:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 09:28:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 379 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 09:28:57,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 09:28:57,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876693978] [2022-03-04 09:28:57,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876693978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 09:28:57,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240073883] [2022-03-04 09:28:57,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 09:28:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 09:28:57,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 09:28:57,493 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) [2022-03-04 09:28:57,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-04 09:28:57,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-04 09:28:57,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 09:28:57,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-04 09:28:57,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 09:28:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2022-03-04 09:28:58,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-04 09:28:58,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240073883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 09:28:58,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-04 09:28:58,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [48] total 58 [2022-03-04 09:28:58,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664677559] [2022-03-04 09:28:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 09:28:58,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-04 09:28:58,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 09:28:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-04 09:28:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2943, Unknown=0, NotChecked=0, Total=3306 [2022-03-04 09:28:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:28:58,033 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 09:28:58,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2022-03-04 09:28:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 09:28:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 09:28:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 09:28:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 09:28:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-03-04 09:28:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-03-04 09:28:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.