./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test/easy1.wvr.c --full-output -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test/easy1.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a21fbf45ca363282cdf47b25dd1f95f64b9021c4 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-05 22:14:57,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-05 22:14:57,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-05 22:14:57,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-05 22:14:57,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-05 22:14:57,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-05 22:14:57,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-05 22:14:57,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-05 22:14:57,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-05 22:14:57,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-05 22:14:57,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-05 22:14:57,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-05 22:14:57,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-05 22:14:57,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-05 22:14:57,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-05 22:14:57,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-05 22:14:57,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-05 22:14:57,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-05 22:14:57,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-05 22:14:57,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-05 22:14:57,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-05 22:14:57,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-05 22:14:57,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-05 22:14:57,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-05 22:14:57,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-05 22:14:57,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-05 22:14:57,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-05 22:14:57,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-05 22:14:57,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-05 22:14:57,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-05 22:14:57,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-05 22:14:57,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-05 22:14:57,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-05 22:14:57,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-05 22:14:57,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-05 22:14:57,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-05 22:14:57,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-05 22:14:57,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-05 22:14:57,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-05 22:14:57,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-05 22:14:57,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-05 22:14:57,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-05 22:14:57,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-05 22:14:57,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-05 22:14:57,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-05 22:14:57,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-05 22:14:57,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-05 22:14:57,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-05 22:14:57,620 INFO L138 SettingsManager]: * Use SBE=true [2021-10-05 22:14:57,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-05 22:14:57,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-05 22:14:57,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-05 22:14:57,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-05 22:14:57,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-05 22:14:57,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-05 22:14:57,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-05 22:14:57,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-05 22:14:57,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-05 22:14:57,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-05 22:14:57,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-05 22:14:57,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-05 22:14:57,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-05 22:14:57,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-05 22:14:57,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-05 22:14:57,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 22:14:57,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-05 22:14:57,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-05 22:14:57,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-05 22:14:57,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-05 22:14:57,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-05 22:14:57,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-05 22:14:57,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-05 22:14:57,628 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a21fbf45ca363282cdf47b25dd1f95f64b9021c4 [2021-10-05 22:14:58,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-05 22:14:58,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-05 22:14:58,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-05 22:14:58,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-05 22:14:58,067 INFO L275 PluginConnector]: CDTParser initialized [2021-10-05 22:14:58,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test/easy1.wvr.c [2021-10-05 22:14:58,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d583ea3f7/f63a745cdf944553aecc7f544a8f8de2/FLAG013f337f3 [2021-10-05 22:14:58,877 INFO L306 CDTParser]: Found 1 translation units. [2021-10-05 22:14:58,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy1.wvr.c [2021-10-05 22:14:58,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d583ea3f7/f63a745cdf944553aecc7f544a8f8de2/FLAG013f337f3 [2021-10-05 22:14:59,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d583ea3f7/f63a745cdf944553aecc7f544a8f8de2 [2021-10-05 22:14:59,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-05 22:14:59,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-05 22:14:59,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-05 22:14:59,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-05 22:14:59,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-05 22:14:59,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e11eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59, skipping insertion in model container [2021-10-05 22:14:59,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-05 22:14:59,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-05 22:14:59,509 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy1.wvr.c[1826,1839] [2021-10-05 22:14:59,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 22:14:59,522 INFO L203 MainTranslator]: Completed pre-run [2021-10-05 22:14:59,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy1.wvr.c[1826,1839] [2021-10-05 22:14:59,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 22:14:59,560 INFO L208 MainTranslator]: Completed translation [2021-10-05 22:14:59,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59 WrapperNode [2021-10-05 22:14:59,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-05 22:14:59,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-05 22:14:59,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-05 22:14:59,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-05 22:14:59,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-05 22:14:59,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-05 22:14:59,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-05 22:14:59,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-05 22:14:59,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-05 22:14:59,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-05 22:14:59,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-05 22:14:59,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-05 22:14:59,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (1/1) ... [2021-10-05 22:14:59,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 22:14:59,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:14:59,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-05 22:14:59,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-05 22:14:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-05 22:14:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-05 22:14:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-05 22:14:59,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-05 22:14:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-05 22:14:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-05 22:14:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-05 22:14:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-05 22:14:59,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-05 22:14:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-05 22:14:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-05 22:14:59,782 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-05 22:15:00,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-05 22:15:00,176 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-05 22:15:00,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:15:00 BoogieIcfgContainer [2021-10-05 22:15:00,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-05 22:15:00,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-05 22:15:00,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-05 22:15:00,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-05 22:15:00,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:14:59" (1/3) ... [2021-10-05 22:15:00,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fda5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:15:00, skipping insertion in model container [2021-10-05 22:15:00,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:14:59" (2/3) ... [2021-10-05 22:15:00,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fda5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:15:00, skipping insertion in model container [2021-10-05 22:15:00,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:15:00" (3/3) ... [2021-10-05 22:15:00,189 INFO L111 eAbstractionObserver]: Analyzing ICFG easy1.wvr.c [2021-10-05 22:15:00,195 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-05 22:15:00,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-05 22:15:00,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-05 22:15:00,196 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-05 22:15:00,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,274 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,274 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:15:00,306 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-05 22:15:00,383 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-05 22:15:00,395 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-05 22:15:00,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-05 22:15:00,420 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-05 22:15:00,436 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 71 transitions, 158 flow [2021-10-05 22:15:00,440 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 71 transitions, 158 flow [2021-10-05 22:15:00,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 158 flow [2021-10-05 22:15:00,499 INFO L129 PetriNetUnfolder]: 6/69 cut-off events. [2021-10-05 22:15:00,499 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-05 22:15:00,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 6/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-10-05 22:15:00,506 INFO L116 LiptonReduction]: Number of co-enabled transitions 308 [2021-10-05 22:15:03,458 INFO L131 LiptonReduction]: Checked pairs total: 312 [2021-10-05 22:15:03,459 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-10-05 22:15:03,468 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 16 transitions, 48 flow [2021-10-05 22:15:03,480 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-05 22:15:03,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:03,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:03,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:03,494 INFO L82 PathProgramCache]: Analyzing trace with hash 730658326, now seen corresponding path program 1 times [2021-10-05 22:15:03,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:03,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442840179] [2021-10-05 22:15:03,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:03,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:03,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:03,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442840179] [2021-10-05 22:15:03,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442840179] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:15:03,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 22:15:03,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-05 22:15:03,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948477828] [2021-10-05 22:15:03,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-05 22:15:03,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-05 22:15:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-05 22:15:03,860 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:03,890 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2021-10-05 22:15:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-05 22:15:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2021-10-05 22:15:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:03,903 INFO L225 Difference]: With dead ends: 37 [2021-10-05 22:15:03,903 INFO L226 Difference]: Without dead ends: 32 [2021-10-05 22:15:03,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-05 22:15:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-05 22:15:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-05 22:15:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2021-10-05 22:15:03,946 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2021-10-05 22:15:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:03,947 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2021-10-05 22:15:03,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2021-10-05 22:15:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-05 22:15:03,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:03,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:03,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-05 22:15:03,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:03,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:03,951 INFO L82 PathProgramCache]: Analyzing trace with hash -2105695694, now seen corresponding path program 1 times [2021-10-05 22:15:03,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:03,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106710807] [2021-10-05 22:15:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:03,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:04,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:04,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106710807] [2021-10-05 22:15:04,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106710807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:04,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858873382] [2021-10-05 22:15:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:04,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:04,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:04,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:04,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-05 22:15:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:04,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-05 22:15:04,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:04,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858873382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:04,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:04,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-05 22:15:04,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519213303] [2021-10-05 22:15:04,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 22:15:04,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 22:15:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-05 22:15:04,305 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:04,367 INFO L93 Difference]: Finished difference Result 77 states and 152 transitions. [2021-10-05 22:15:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 22:15:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) Word has length 12 [2021-10-05 22:15:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:04,374 INFO L225 Difference]: With dead ends: 77 [2021-10-05 22:15:04,376 INFO L226 Difference]: Without dead ends: 72 [2021-10-05 22:15:04,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-05 22:15:04,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-05 22:15:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 42. [2021-10-05 22:15:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.292682926829268) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 94 transitions. [2021-10-05 22:15:04,399 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 94 transitions. Word has length 12 [2021-10-05 22:15:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:04,401 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 94 transitions. [2021-10-05 22:15:04,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 94 transitions. [2021-10-05 22:15:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-05 22:15:04,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:04,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:04,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:04,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:04,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:04,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:04,621 INFO L82 PathProgramCache]: Analyzing trace with hash -623783985, now seen corresponding path program 1 times [2021-10-05 22:15:04,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:04,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055771694] [2021-10-05 22:15:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:04,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:04,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:04,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055771694] [2021-10-05 22:15:04,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055771694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:15:04,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 22:15:04,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 22:15:04,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988727464] [2021-10-05 22:15:04,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 22:15:04,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 22:15:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:15:04,705 INFO L87 Difference]: Start difference. First operand 42 states and 94 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:04,724 INFO L93 Difference]: Finished difference Result 52 states and 109 transitions. [2021-10-05 22:15:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 22:15:04,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2021-10-05 22:15:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:04,727 INFO L225 Difference]: With dead ends: 52 [2021-10-05 22:15:04,727 INFO L226 Difference]: Without dead ends: 44 [2021-10-05 22:15:04,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:15:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-05 22:15:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-05 22:15:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 97 transitions. [2021-10-05 22:15:04,738 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 97 transitions. Word has length 12 [2021-10-05 22:15:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:04,739 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 97 transitions. [2021-10-05 22:15:04,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 97 transitions. [2021-10-05 22:15:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-05 22:15:04,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:04,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:04,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-05 22:15:04,741 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:04,741 INFO L82 PathProgramCache]: Analyzing trace with hash 373038043, now seen corresponding path program 2 times [2021-10-05 22:15:04,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:04,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379670267] [2021-10-05 22:15:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:04,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:04,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:04,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379670267] [2021-10-05 22:15:04,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379670267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855634083] [2021-10-05 22:15:04,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-05 22:15:04,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:04,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:04,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-05 22:15:04,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 22:15:04,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:04,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-05 22:15:04,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:04,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855634083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:04,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:04,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-05 22:15:04,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234644057] [2021-10-05 22:15:04,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 22:15:04,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 22:15:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-05 22:15:04,975 INFO L87 Difference]: Start difference. First operand 44 states and 97 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:05,002 INFO L93 Difference]: Finished difference Result 48 states and 107 transitions. [2021-10-05 22:15:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 22:15:05,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 12 [2021-10-05 22:15:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:05,004 INFO L225 Difference]: With dead ends: 48 [2021-10-05 22:15:05,004 INFO L226 Difference]: Without dead ends: 48 [2021-10-05 22:15:05,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-05 22:15:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-05 22:15:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-10-05 22:15:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.311111111111111) internal successors, (104), 45 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) [2021-10-05 22:15:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 104 transitions. [2021-10-05 22:15:05,012 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 104 transitions. Word has length 12 [2021-10-05 22:15:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:05,013 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 104 transitions. [2021-10-05 22:15:05,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 104 transitions. [2021-10-05 22:15:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-05 22:15:05,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:05,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:05,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:05,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:05,230 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:05,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1090209389, now seen corresponding path program 1 times [2021-10-05 22:15:05,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:05,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586513444] [2021-10-05 22:15:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:05,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:05,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:05,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586513444] [2021-10-05 22:15:05,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586513444] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:05,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88359181] [2021-10-05 22:15:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:05,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:05,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:05,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:05,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-05 22:15:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:05,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-05 22:15:05,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:05,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88359181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:15:05,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-05 22:15:05,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-05 22:15:05,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124202176] [2021-10-05 22:15:05,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-05 22:15:05,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:05,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-05 22:15:05,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:05,601 INFO L87 Difference]: Start difference. First operand 46 states and 104 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:05,659 INFO L93 Difference]: Finished difference Result 93 states and 195 transitions. [2021-10-05 22:15:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 22:15:05,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) Word has length 13 [2021-10-05 22:15:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:05,663 INFO L225 Difference]: With dead ends: 93 [2021-10-05 22:15:05,664 INFO L226 Difference]: Without dead ends: 84 [2021-10-05 22:15:05,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-05 22:15:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2021-10-05 22:15:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 53 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2021-10-05 22:15:05,690 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 13 [2021-10-05 22:15:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:05,691 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2021-10-05 22:15:05,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2021-10-05 22:15:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-05 22:15:05,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:05,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:05,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:05,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:05,910 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:05,911 INFO L82 PathProgramCache]: Analyzing trace with hash 627539671, now seen corresponding path program 2 times [2021-10-05 22:15:05,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:05,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948497583] [2021-10-05 22:15:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:05,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:06,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:06,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948497583] [2021-10-05 22:15:06,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948497583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:06,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852123032] [2021-10-05 22:15:06,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-05 22:15:06,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:06,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:06,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:06,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-05 22:15:06,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 22:15:06,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:06,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-05 22:15:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:06,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852123032] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:06,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:06,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-05 22:15:06,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286658185] [2021-10-05 22:15:06,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-05 22:15:06,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-05 22:15:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:06,283 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:06,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:06,397 INFO L93 Difference]: Finished difference Result 101 states and 225 transitions. [2021-10-05 22:15:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-05 22:15:06,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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) Word has length 13 [2021-10-05 22:15:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:06,401 INFO L225 Difference]: With dead ends: 101 [2021-10-05 22:15:06,401 INFO L226 Difference]: Without dead ends: 96 [2021-10-05 22:15:06,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-05 22:15:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-05 22:15:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2021-10-05 22:15:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 59 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 147 transitions. [2021-10-05 22:15:06,416 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 147 transitions. Word has length 13 [2021-10-05 22:15:06,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:06,416 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 147 transitions. [2021-10-05 22:15:06,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:06,417 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 147 transitions. [2021-10-05 22:15:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:06,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:06,420 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:06,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:06,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:06,622 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:06,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1083392945, now seen corresponding path program 3 times [2021-10-05 22:15:06,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:06,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592471572] [2021-10-05 22:15:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:06,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:06,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:06,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592471572] [2021-10-05 22:15:06,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592471572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:06,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864037697] [2021-10-05 22:15:06,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-05 22:15:06,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:06,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:06,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:06,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-05 22:15:06,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-05 22:15:06,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:06,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-05 22:15:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:06,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864037697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:06,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:06,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-05 22:15:06,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56645786] [2021-10-05 22:15:06,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-05 22:15:06,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:06,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-05 22:15:06,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:06,927 INFO L87 Difference]: Start difference. First operand 60 states and 147 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:07,052 INFO L93 Difference]: Finished difference Result 122 states and 263 transitions. [2021-10-05 22:15:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-05 22:15:07,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) Word has length 14 [2021-10-05 22:15:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:07,054 INFO L225 Difference]: With dead ends: 122 [2021-10-05 22:15:07,054 INFO L226 Difference]: Without dead ends: 122 [2021-10-05 22:15:07,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-05 22:15:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-05 22:15:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 66. [2021-10-05 22:15:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.6615384615384614) internal successors, (173), 65 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 173 transitions. [2021-10-05 22:15:07,072 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 173 transitions. Word has length 14 [2021-10-05 22:15:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:07,072 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 173 transitions. [2021-10-05 22:15:07,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 173 transitions. [2021-10-05 22:15:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:07,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:07,074 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:07,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:07,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:07,288 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:07,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1906197074, now seen corresponding path program 4 times [2021-10-05 22:15:07,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:07,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427411877] [2021-10-05 22:15:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:07,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:07,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:07,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427411877] [2021-10-05 22:15:07,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427411877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:07,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718783345] [2021-10-05 22:15:07,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-05 22:15:07,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:07,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:07,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:07,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-05 22:15:07,430 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-05 22:15:07,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:07,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-05 22:15:07,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:07,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718783345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:07,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:07,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-05 22:15:07,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653084158] [2021-10-05 22:15:07,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-05 22:15:07,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-05 22:15:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-05 22:15:07,511 INFO L87 Difference]: Start difference. First operand 66 states and 173 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:07,569 INFO L93 Difference]: Finished difference Result 94 states and 218 transitions. [2021-10-05 22:15:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-05 22:15:07,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 14 [2021-10-05 22:15:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:07,571 INFO L225 Difference]: With dead ends: 94 [2021-10-05 22:15:07,571 INFO L226 Difference]: Without dead ends: 84 [2021-10-05 22:15:07,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-05 22:15:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-10-05 22:15:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.56) internal successors, (192), 75 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 192 transitions. [2021-10-05 22:15:07,578 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 192 transitions. Word has length 14 [2021-10-05 22:15:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:07,579 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 192 transitions. [2021-10-05 22:15:07,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 192 transitions. [2021-10-05 22:15:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:07,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:07,581 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:07,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:07,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:07,787 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash -322194225, now seen corresponding path program 5 times [2021-10-05 22:15:07,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:07,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082671306] [2021-10-05 22:15:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:07,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:07,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:07,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082671306] [2021-10-05 22:15:07,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082671306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:07,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774382855] [2021-10-05 22:15:07,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-05 22:15:07,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:07,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:07,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:07,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-05 22:15:07,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-05 22:15:07,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:07,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-05 22:15:07,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:08,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774382855] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:08,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:08,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-05 22:15:08,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620546803] [2021-10-05 22:15:08,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-05 22:15:08,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-05 22:15:08,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:15:08,066 INFO L87 Difference]: Start difference. First operand 76 states and 192 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:08,151 INFO L93 Difference]: Finished difference Result 100 states and 226 transitions. [2021-10-05 22:15:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-05 22:15:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 14 [2021-10-05 22:15:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:08,154 INFO L225 Difference]: With dead ends: 100 [2021-10-05 22:15:08,154 INFO L226 Difference]: Without dead ends: 98 [2021-10-05 22:15:08,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-05 22:15:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-05 22:15:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2021-10-05 22:15:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.533333333333333) internal successors, (190), 75 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 190 transitions. [2021-10-05 22:15:08,161 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 190 transitions. Word has length 14 [2021-10-05 22:15:08,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:08,162 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 190 transitions. [2021-10-05 22:15:08,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:08,162 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 190 transitions. [2021-10-05 22:15:08,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:08,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:08,164 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:08,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-05 22:15:08,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:08,378 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 158554882, now seen corresponding path program 6 times [2021-10-05 22:15:08,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:08,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591243163] [2021-10-05 22:15:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:08,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:08,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:08,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591243163] [2021-10-05 22:15:08,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591243163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:08,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523215112] [2021-10-05 22:15:08,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-05 22:15:08,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:08,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:08,441 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:08,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-05 22:15:08,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-05 22:15:08,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:08,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-05 22:15:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:08,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523215112] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:08,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:08,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-05 22:15:08,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642120540] [2021-10-05 22:15:08,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-05 22:15:08,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-05 22:15:08,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:15:08,640 INFO L87 Difference]: Start difference. First operand 76 states and 190 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:08,702 INFO L93 Difference]: Finished difference Result 104 states and 238 transitions. [2021-10-05 22:15:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-05 22:15:08,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 14 [2021-10-05 22:15:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:08,704 INFO L225 Difference]: With dead ends: 104 [2021-10-05 22:15:08,705 INFO L226 Difference]: Without dead ends: 96 [2021-10-05 22:15:08,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-05 22:15:08,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 68. [2021-10-05 22:15:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.537313432835821) internal successors, (170), 67 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 170 transitions. [2021-10-05 22:15:08,723 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 170 transitions. Word has length 14 [2021-10-05 22:15:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:08,724 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 170 transitions. [2021-10-05 22:15:08,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 170 transitions. [2021-10-05 22:15:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:08,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:08,729 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:08,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:08,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-05 22:15:08,930 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash -703887524, now seen corresponding path program 7 times [2021-10-05 22:15:08,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:08,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400687110] [2021-10-05 22:15:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:08,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:08,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:08,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400687110] [2021-10-05 22:15:08,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400687110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:08,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292244189] [2021-10-05 22:15:08,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-05 22:15:08,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:08,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:09,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:09,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-05 22:15:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:09,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-05 22:15:09,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 22:15:09,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292244189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:15:09,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-05 22:15:09,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2021-10-05 22:15:09,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954697500] [2021-10-05 22:15:09,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-05 22:15:09,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:09,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-05 22:15:09,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:15:09,230 INFO L87 Difference]: Start difference. First operand 68 states and 170 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:09,255 INFO L93 Difference]: Finished difference Result 95 states and 215 transitions. [2021-10-05 22:15:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 22:15:09,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 14 [2021-10-05 22:15:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:09,257 INFO L225 Difference]: With dead ends: 95 [2021-10-05 22:15:09,257 INFO L226 Difference]: Without dead ends: 88 [2021-10-05 22:15:09,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:15:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-05 22:15:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2021-10-05 22:15:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 135 transitions. [2021-10-05 22:15:09,265 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 135 transitions. Word has length 14 [2021-10-05 22:15:09,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:09,265 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 135 transitions. [2021-10-05 22:15:09,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 135 transitions. [2021-10-05 22:15:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:09,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:09,267 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:09,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:09,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:09,482 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:09,483 INFO L82 PathProgramCache]: Analyzing trace with hash 474505006, now seen corresponding path program 8 times [2021-10-05 22:15:09,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:09,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834754287] [2021-10-05 22:15:09,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:09,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:09,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:09,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834754287] [2021-10-05 22:15:09,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834754287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:09,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667611306] [2021-10-05 22:15:09,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-05 22:15:09,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:09,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:09,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-05 22:15:09,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 22:15:09,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:09,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-05 22:15:09,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:09,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667611306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:09,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:09,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-05 22:15:09,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552400469] [2021-10-05 22:15:09,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-05 22:15:09,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-05 22:15:09,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:15:09,728 INFO L87 Difference]: Start difference. First operand 58 states and 135 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:09,823 INFO L93 Difference]: Finished difference Result 74 states and 158 transitions. [2021-10-05 22:15:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-05 22:15:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) Word has length 14 [2021-10-05 22:15:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:09,824 INFO L225 Difference]: With dead ends: 74 [2021-10-05 22:15:09,824 INFO L226 Difference]: Without dead ends: 70 [2021-10-05 22:15:09,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-05 22:15:09,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-05 22:15:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2021-10-05 22:15:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.377049180327869) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 145 transitions. [2021-10-05 22:15:09,828 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 145 transitions. Word has length 14 [2021-10-05 22:15:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:09,828 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 145 transitions. [2021-10-05 22:15:09,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 145 transitions. [2021-10-05 22:15:09,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:09,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:09,829 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:09,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:10,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-05 22:15:10,030 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:10,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash 963417819, now seen corresponding path program 9 times [2021-10-05 22:15:10,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:10,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107159500] [2021-10-05 22:15:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:10,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:10,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:10,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107159500] [2021-10-05 22:15:10,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107159500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:10,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699520765] [2021-10-05 22:15:10,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-05 22:15:10,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:10,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:10,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:10,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-05 22:15:10,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-05 22:15:10,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:10,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-05 22:15:10,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:10,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699520765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:10,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:10,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-05 22:15:10,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949244776] [2021-10-05 22:15:10,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-05 22:15:10,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:10,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-05 22:15:10,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-05 22:15:10,288 INFO L87 Difference]: Start difference. First operand 62 states and 145 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:10,343 INFO L93 Difference]: Finished difference Result 84 states and 184 transitions. [2021-10-05 22:15:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-05 22:15:10,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 14 [2021-10-05 22:15:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:10,346 INFO L225 Difference]: With dead ends: 84 [2021-10-05 22:15:10,346 INFO L226 Difference]: Without dead ends: 80 [2021-10-05 22:15:10,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-05 22:15:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-05 22:15:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.3728813559322033) internal successors, (140), 59 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 140 transitions. [2021-10-05 22:15:10,353 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 140 transitions. Word has length 14 [2021-10-05 22:15:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:10,353 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 140 transitions. [2021-10-05 22:15:10,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 140 transitions. [2021-10-05 22:15:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-05 22:15:10,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:10,354 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:10,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:10,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:10,569 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:10,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2015827438, now seen corresponding path program 10 times [2021-10-05 22:15:10,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:10,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916905233] [2021-10-05 22:15:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:10,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:10,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:10,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916905233] [2021-10-05 22:15:10,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916905233] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:10,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10677564] [2021-10-05 22:15:10,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-05 22:15:10,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:10,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:10,625 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:10,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-05 22:15:10,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-05 22:15:10,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:10,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-05 22:15:10,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:10,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10677564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:10,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:10,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-05 22:15:10,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318028147] [2021-10-05 22:15:10,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-05 22:15:10,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-05 22:15:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:15:10,832 INFO L87 Difference]: Start difference. First operand 60 states and 140 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:10,905 INFO L93 Difference]: Finished difference Result 66 states and 153 transitions. [2021-10-05 22:15:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-05 22:15:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) Word has length 14 [2021-10-05 22:15:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:10,906 INFO L225 Difference]: With dead ends: 66 [2021-10-05 22:15:10,906 INFO L226 Difference]: Without dead ends: 66 [2021-10-05 22:15:10,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-05 22:15:10,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-05 22:15:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-10-05 22:15:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.3442622950819674) internal successors, (143), 61 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 143 transitions. [2021-10-05 22:15:10,910 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 143 transitions. Word has length 14 [2021-10-05 22:15:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:10,910 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 143 transitions. [2021-10-05 22:15:10,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 143 transitions. [2021-10-05 22:15:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-05 22:15:10,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:10,911 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:10,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:11,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-05 22:15:11,127 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:11,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1024798538, now seen corresponding path program 11 times [2021-10-05 22:15:11,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:11,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579330237] [2021-10-05 22:15:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:11,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 22:15:11,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:11,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579330237] [2021-10-05 22:15:11,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579330237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:11,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236818365] [2021-10-05 22:15:11,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-05 22:15:11,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:11,239 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:11,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-05 22:15:11,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 22:15:11,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:11,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-05 22:15:11,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:11,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236818365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:11,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:11,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-05 22:15:11,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108921141] [2021-10-05 22:15:11,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-05 22:15:11,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-05 22:15:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-05 22:15:11,500 INFO L87 Difference]: Start difference. First operand 62 states and 143 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:11,761 INFO L93 Difference]: Finished difference Result 123 states and 270 transitions. [2021-10-05 22:15:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-05 22:15:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 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) Word has length 15 [2021-10-05 22:15:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:11,762 INFO L225 Difference]: With dead ends: 123 [2021-10-05 22:15:11,763 INFO L226 Difference]: Without dead ends: 22 [2021-10-05 22:15:11,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 205.0ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-05 22:15:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-05 22:15:11,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-05 22:15:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2021-10-05 22:15:11,765 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15 [2021-10-05 22:15:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:11,766 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-10-05 22:15:11,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2021-10-05 22:15:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-05 22:15:11,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:15:11,767 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:15:11,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:11,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-05 22:15:11,968 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-05 22:15:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:15:11,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1791617024, now seen corresponding path program 12 times [2021-10-05 22:15:11,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:15:11,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937631473] [2021-10-05 22:15:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:15:11,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:15:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:15:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 22:15:12,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:15:12,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937631473] [2021-10-05 22:15:12,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937631473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:12,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14642024] [2021-10-05 22:15:12,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-05 22:15:12,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:15:12,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:15:12,094 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:15:12,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-05 22:15:12,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-05 22:15:12,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:15:12,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-05 22:15:12,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:15:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:15:12,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14642024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:15:12,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:15:12,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-05 22:15:12,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381524070] [2021-10-05 22:15:12,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-05 22:15:12,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:15:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-05 22:15:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-05 22:15:12,339 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:15:12,480 INFO L93 Difference]: Finished difference Result 29 states and 44 transitions. [2021-10-05 22:15:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-05 22:15:12,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 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) Word has length 15 [2021-10-05 22:15:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:15:12,481 INFO L225 Difference]: With dead ends: 29 [2021-10-05 22:15:12,482 INFO L226 Difference]: Without dead ends: 0 [2021-10-05 22:15:12,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-05 22:15:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-05 22:15:12,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-05 22:15:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-05 22:15:12,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-05 22:15:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:15:12,483 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-05 22:15:12,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:15:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-05 22:15:12,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-05 22:15:12,486 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-05 22:15:12,487 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-05 22:15:12,487 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-05 22:15:12,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-05 22:15:12,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-05 22:15:12,694 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-05 22:15:12,694 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-05 22:15:12,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:15:12 BasicIcfg [2021-10-05 22:15:12,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-05 22:15:12,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-05 22:15:12,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-05 22:15:12,697 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-05 22:15:12,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:15:00" (3/4) ... [2021-10-05 22:15:12,701 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-05 22:15:12,709 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-05 22:15:12,709 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-05 22:15:12,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-05 22:15:12,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-05 22:15:12,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 22:15:12,715 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-05 22:15:12,752 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-05 22:15:12,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-05 22:15:12,755 INFO L168 Benchmark]: Toolchain (without parser) took 13547.99 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 32.9 MB in the beginning and 74.2 MB in the end (delta: -41.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-05 22:15:12,755 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 21.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 22:15:12,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.94 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 35.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-05 22:15:12,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 56.6 MB. Free memory was 35.8 MB in the beginning and 34.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 22:15:12,759 INFO L168 Benchmark]: Boogie Preprocessor took 29.75 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 33.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 22:15:12,759 INFO L168 Benchmark]: RCFGBuilder took 541.76 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 35.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-05 22:15:12,760 INFO L168 Benchmark]: TraceAbstraction took 12515.73 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 35.2 MB in the beginning and 77.2 MB in the end (delta: -42.0 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-05 22:15:12,760 INFO L168 Benchmark]: Witness Printer took 55.57 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 74.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 22:15:12,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 21.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.94 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 35.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 56.6 MB. Free memory was 35.8 MB in the beginning and 34.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.75 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 33.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 541.76 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 35.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12515.73 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 35.2 MB in the beginning and 77.2 MB in the end (delta: -42.0 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 55.57 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 74.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3018.8ms, 72 PlacesBefore, 21 PlacesAfterwards, 71 TransitionsBefore, 16 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 63 TotalNumberOfCompositions, 312 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 312, positive: 312, positive conditional: 0, positive unconditional: 312, 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: 213, positive: 213, positive conditional: 0, positive unconditional: 213, 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: 213, positive: 213, positive conditional: 0, positive unconditional: 213, 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: 312, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 213, unknown conditional: 0, unknown unconditional: 213] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 66]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 12312.6ms, OverallIterations: 16, TraceHistogramMax: 2, EmptinessCheckTime: 28.4ms, AutomataDifference: 1422.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3084.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 253 SDtfs, 493 SDslu, 656 SDs, 0 SdLazy, 692 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 497.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 162 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 965.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=8, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 168.1ms AutomataMinimizationTime, 16 MinimizatonAttempts, 274 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 107.3ms SsaConstructionTime, 622.4ms SatisfiabilityAnalysisTime, 2583.2ms InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 1763 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1234 ConjunctsInSsa, 158 ConjunctsInUnsatCore, 30 InterpolantComputations, 4 PerfectInterpolantSequences, 45/101 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-05 22:15:12,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...