./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY --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 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:38:23,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:38:23,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:38:23,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:38:23,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:38:23,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:38:23,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:38:23,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:38:23,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:38:23,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:38:23,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:38:23,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:38:23,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:38:23,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:38:23,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:38:23,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:38:23,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:38:23,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:38:23,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:38:23,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:38:23,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:38:23,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:38:23,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:38:23,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:38:23,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:38:23,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:38:23,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:38:23,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:38:23,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:38:23,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:38:23,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:38:23,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:38:23,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:38:23,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:38:23,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:38:23,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:38:23,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:38:23,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:38:23,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:38:23,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:38:23,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:38:23,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:38:23,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:38:23,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:38:23,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:38:23,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:38:23,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:38:23,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:38:23,386 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:38:23,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:38:23,386 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:38:23,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:38:23,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:38:23,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:38:23,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:38:23,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:38:23,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:38:23,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:38:23,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:38:23,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:38:23,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:38:23,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:38:23,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:38:23,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:38:23,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:38:23,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:38:23,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:38:23,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:38:23,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:38:23,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:38:23,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:38:23,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:38:23,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:38:23,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:38:23,392 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 [2021-11-07 07:38:23,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:38:23,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:38:23,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:38:23,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:38:23,704 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:38:23,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-11-07 07:38:23,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/data/4269313aa/6e9dd00cfb49429dbc4ad90f8c60ca5f/FLAG1df6c3c0c [2021-11-07 07:38:24,576 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:38:24,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-11-07 07:38:24,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/data/4269313aa/6e9dd00cfb49429dbc4ad90f8c60ca5f/FLAG1df6c3c0c [2021-11-07 07:38:24,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/data/4269313aa/6e9dd00cfb49429dbc4ad90f8c60ca5f [2021-11-07 07:38:24,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:38:24,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:38:24,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:38:24,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:38:24,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:38:24,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:38:24" (1/1) ... [2021-11-07 07:38:24,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cf2171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:24, skipping insertion in model container [2021-11-07 07:38:24,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:38:24" (1/1) ... [2021-11-07 07:38:25,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:38:25,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:38:25,380 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-11-07 07:38:25,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:38:25,437 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:38:25,467 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-11-07 07:38:25,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:38:25,507 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:38:25,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25 WrapperNode [2021-11-07 07:38:25,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:38:25,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:38:25,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:38:25,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:38:25,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:38:25,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:38:25,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:38:25,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:38:25,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:38:25,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:38:25,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:38:25,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:38:25,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (1/1) ... [2021-11-07 07:38:25,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:38:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:25,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:38:25,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:38:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:38:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:38:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:38:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:38:26,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:38:26,419 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-11-07 07:38:26,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:38:26 BoogieIcfgContainer [2021-11-07 07:38:26,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:38:26,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:38:26,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:38:26,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:38:26,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:38:24" (1/3) ... [2021-11-07 07:38:26,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e11ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:38:26, skipping insertion in model container [2021-11-07 07:38:26,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:38:25" (2/3) ... [2021-11-07 07:38:26,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e11ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:38:26, skipping insertion in model container [2021-11-07 07:38:26,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:38:26" (3/3) ... [2021-11-07 07:38:26,449 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2021-11-07 07:38:26,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:38:26,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-07 07:38:26,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:38:26,627 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:38:26,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-07 07:38:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 07:38:26,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:26,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:26,708 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:26,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash 688476657, now seen corresponding path program 1 times [2021-11-07 07:38:26,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:26,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448072169] [2021-11-07 07:38:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:26,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:27,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:27,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448072169] [2021-11-07 07:38:27,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448072169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:27,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:27,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:38:27,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63803771] [2021-11-07 07:38:27,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:38:27,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:38:27,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:38:27,183 INFO L87 Difference]: Start difference. First operand has 46 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:27,227 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2021-11-07 07:38:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:38:27,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-07 07:38:27,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:27,250 INFO L225 Difference]: With dead ends: 86 [2021-11-07 07:38:27,250 INFO L226 Difference]: Without dead ends: 41 [2021-11-07 07:38:27,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:38:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-07 07:38:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-07 07:38:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-11-07 07:38:27,329 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2021-11-07 07:38:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:27,331 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-11-07 07:38:27,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-11-07 07:38:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 07:38:27,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:27,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:27,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:38:27,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -186371961, now seen corresponding path program 1 times [2021-11-07 07:38:27,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:27,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086323413] [2021-11-07 07:38:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:27,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:27,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:27,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086323413] [2021-11-07 07:38:27,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086323413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:27,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:27,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:38:27,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463952739] [2021-11-07 07:38:27,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:38:27,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:38:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:38:27,633 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-07 07:38:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:27,815 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-11-07 07:38:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:38:27,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2021-11-07 07:38:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:27,819 INFO L225 Difference]: With dead ends: 45 [2021-11-07 07:38:27,819 INFO L226 Difference]: Without dead ends: 39 [2021-11-07 07:38:27,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:38:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-07 07:38:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-11-07 07:38:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-07 07:38:27,832 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 11 [2021-11-07 07:38:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:27,833 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-07 07:38:27,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-07 07:38:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-07 07:38:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 07:38:27,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:27,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:27,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:38:27,836 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1285329802, now seen corresponding path program 1 times [2021-11-07 07:38:27,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:27,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001950633] [2021-11-07 07:38:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:27,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:28,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:28,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001950633] [2021-11-07 07:38:28,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001950633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:28,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:28,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:38:28,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535028946] [2021-11-07 07:38:28,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:38:28,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:38:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:38:28,061 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-11-07 07:38:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:28,237 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-11-07 07:38:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:38:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 [2021-11-07 07:38:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:28,240 INFO L225 Difference]: With dead ends: 51 [2021-11-07 07:38:28,242 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 07:38:28,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:38:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 07:38:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-11-07 07:38:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.2) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-11-07 07:38:28,260 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 13 [2021-11-07 07:38:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:28,260 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-11-07 07:38:28,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-11-07 07:38:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-11-07 07:38:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 07:38:28,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:28,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:28,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:38:28,263 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash 825693350, now seen corresponding path program 1 times [2021-11-07 07:38:28,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:28,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106042246] [2021-11-07 07:38:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:28,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:28,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:28,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106042246] [2021-11-07 07:38:28,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106042246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:28,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:28,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:38:28,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842988821] [2021-11-07 07:38:28,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:38:28,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:38:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:38:28,352 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-07 07:38:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:28,432 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-11-07 07:38:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:38:28,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 16 [2021-11-07 07:38:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:28,436 INFO L225 Difference]: With dead ends: 56 [2021-11-07 07:38:28,437 INFO L226 Difference]: Without dead ends: 54 [2021-11-07 07:38:28,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:38:28,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-07 07:38:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-11-07 07:38:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.186046511627907) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-11-07 07:38:28,458 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 16 [2021-11-07 07:38:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:28,458 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-11-07 07:38:28,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-07 07:38:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-11-07 07:38:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:38:28,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:28,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:28,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:38:28,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:28,463 INFO L85 PathProgramCache]: Analyzing trace with hash -960063632, now seen corresponding path program 1 times [2021-11-07 07:38:28,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:28,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191577497] [2021-11-07 07:38:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:28,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:28,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:28,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191577497] [2021-11-07 07:38:28,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191577497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:28,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:28,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 07:38:28,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563751426] [2021-11-07 07:38:28,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:38:28,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:28,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:38:28,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:38:28,558 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-11-07 07:38:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:28,713 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-11-07 07:38:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:38:28,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 17 [2021-11-07 07:38:28,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:28,716 INFO L225 Difference]: With dead ends: 74 [2021-11-07 07:38:28,716 INFO L226 Difference]: Without dead ends: 60 [2021-11-07 07:38:28,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:38:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-07 07:38:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-11-07 07:38:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-11-07 07:38:28,732 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 17 [2021-11-07 07:38:28,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:28,732 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-11-07 07:38:28,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-11-07 07:38:28,733 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-11-07 07:38:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 07:38:28,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:28,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:28,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:38:28,734 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1077483319, now seen corresponding path program 1 times [2021-11-07 07:38:28,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:28,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839396447] [2021-11-07 07:38:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:28,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:28,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:28,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839396447] [2021-11-07 07:38:28,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839396447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:28,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:28,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 07:38:28,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895331259] [2021-11-07 07:38:28,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:38:28,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:38:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:38:28,846 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:29,015 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-11-07 07:38:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:38:29,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2021-11-07 07:38:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:29,017 INFO L225 Difference]: With dead ends: 66 [2021-11-07 07:38:29,017 INFO L226 Difference]: Without dead ends: 64 [2021-11-07 07:38:29,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:38:29,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-07 07:38:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-11-07 07:38:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 55 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-11-07 07:38:29,036 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 18 [2021-11-07 07:38:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:29,036 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-11-07 07:38:29,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-11-07 07:38:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 07:38:29,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:29,038 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:29,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:38:29,039 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash 673404737, now seen corresponding path program 1 times [2021-11-07 07:38:29,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:29,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649504772] [2021-11-07 07:38:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:29,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:29,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:29,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649504772] [2021-11-07 07:38:29,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649504772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:29,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956639619] [2021-11-07 07:38:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:29,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:29,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:29,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:29,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:38:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:29,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:38:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:29,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956639619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:29,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:29,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 07:38:29,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810680771] [2021-11-07 07:38:29,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:38:29,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:38:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:38:29,350 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:29,415 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-11-07 07:38:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:38:29,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 27 [2021-11-07 07:38:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:29,417 INFO L225 Difference]: With dead ends: 56 [2021-11-07 07:38:29,417 INFO L226 Difference]: Without dead ends: 54 [2021-11-07 07:38:29,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:38:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-07 07:38:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-07 07:38:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.14) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-11-07 07:38:29,422 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 27 [2021-11-07 07:38:29,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:29,423 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-11-07 07:38:29,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-11-07 07:38:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 07:38:29,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:29,424 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:29,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:29,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-07 07:38:29,638 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1386043339, now seen corresponding path program 1 times [2021-11-07 07:38:29,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:29,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781361884] [2021-11-07 07:38:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:29,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:29,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:29,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781361884] [2021-11-07 07:38:29,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781361884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:29,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376376385] [2021-11-07 07:38:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:29,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:29,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:29,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:29,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:38:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:29,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:38:29,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:30,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376376385] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:30,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:30,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-07 07:38:30,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073960319] [2021-11-07 07:38:30,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:38:30,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:38:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:38:30,260 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:30,544 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-11-07 07:38:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:38:30,546 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 28 [2021-11-07 07:38:30,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:30,547 INFO L225 Difference]: With dead ends: 84 [2021-11-07 07:38:30,547 INFO L226 Difference]: Without dead ends: 70 [2021-11-07 07:38:30,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:38:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-07 07:38:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-11-07 07:38:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-11-07 07:38:30,554 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 28 [2021-11-07 07:38:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:30,555 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-11-07 07:38:30,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-11-07 07:38:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 07:38:30,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:30,556 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:30,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:30,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:30,782 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1397952348, now seen corresponding path program 1 times [2021-11-07 07:38:30,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:30,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646297661] [2021-11-07 07:38:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:30,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:30,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646297661] [2021-11-07 07:38:30,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646297661] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411524929] [2021-11-07 07:38:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:30,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:30,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:30,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:31,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:38:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:31,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:38:31,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:31,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411524929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:31,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:31,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-11-07 07:38:31,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967415632] [2021-11-07 07:38:31,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:38:31,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:38:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:38:31,647 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:31,922 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-11-07 07:38:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:38:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 07:38:31,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:31,926 INFO L225 Difference]: With dead ends: 75 [2021-11-07 07:38:31,926 INFO L226 Difference]: Without dead ends: 73 [2021-11-07 07:38:31,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:38:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-07 07:38:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2021-11-07 07:38:31,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 64 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-11-07 07:38:31,952 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 29 [2021-11-07 07:38:31,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:31,953 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-11-07 07:38:31,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:31,953 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-11-07 07:38:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 07:38:31,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:31,963 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:32,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:32,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:32,182 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash -749675952, now seen corresponding path program 2 times [2021-11-07 07:38:32,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:32,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451551175] [2021-11-07 07:38:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:32,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:32,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:32,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451551175] [2021-11-07 07:38:32,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451551175] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:32,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427676422] [2021-11-07 07:38:32,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:38:32,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:32,508 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:32,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:38:32,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:38:32,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:32,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:38:32,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:38:33,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427676422] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:33,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:33,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-11-07 07:38:33,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637378989] [2021-11-07 07:38:33,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:38:33,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:33,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:38:33,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:38:33,095 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:33,610 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-11-07 07:38:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:38:33,611 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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 39 [2021-11-07 07:38:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:33,612 INFO L225 Difference]: With dead ends: 65 [2021-11-07 07:38:33,612 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 07:38:33,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:38:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 07:38:33,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2021-11-07 07:38:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-11-07 07:38:33,617 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-11-07 07:38:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:33,623 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-11-07 07:38:33,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-11-07 07:38:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 07:38:33,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:33,625 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:33,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:33,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 07:38:33,842 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1149567465, now seen corresponding path program 2 times [2021-11-07 07:38:33,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:33,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344030005] [2021-11-07 07:38:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:33,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:34,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:34,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344030005] [2021-11-07 07:38:34,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344030005] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:34,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129572619] [2021-11-07 07:38:34,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:38:34,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:34,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:34,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:34,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:38:34,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:38:34,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:34,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:38:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:34,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129572619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:34,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:34,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-11-07 07:38:34,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305360241] [2021-11-07 07:38:34,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:38:34,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:38:34,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:38:34,774 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:35,083 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-11-07 07:38:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 07:38:35,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 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 40 [2021-11-07 07:38:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:35,085 INFO L225 Difference]: With dead ends: 62 [2021-11-07 07:38:35,085 INFO L226 Difference]: Without dead ends: 60 [2021-11-07 07:38:35,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:38:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-07 07:38:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-11-07 07:38:35,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-07 07:38:35,094 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 40 [2021-11-07 07:38:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:35,095 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-07 07:38:35,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-07 07:38:35,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 07:38:35,098 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:35,098 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:35,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:35,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 07:38:35,311 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1266031740, now seen corresponding path program 3 times [2021-11-07 07:38:35,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:35,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824176326] [2021-11-07 07:38:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:35,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:35,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:35,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824176326] [2021-11-07 07:38:35,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824176326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:35,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647803687] [2021-11-07 07:38:35,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:38:35,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:35,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:35,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:35,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:38:36,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:38:36,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:36,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:38:36,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:36,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647803687] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:36,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:36,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-11-07 07:38:36,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851049963] [2021-11-07 07:38:36,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 07:38:36,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 07:38:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:38:36,973 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:38,024 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-11-07 07:38:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 07:38:38,025 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 07:38:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:38,026 INFO L225 Difference]: With dead ends: 73 [2021-11-07 07:38:38,026 INFO L226 Difference]: Without dead ends: 71 [2021-11-07 07:38:38,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=398, Invalid=1954, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:38:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-07 07:38:38,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2021-11-07 07:38:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2021-11-07 07:38:38,036 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 51 [2021-11-07 07:38:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:38,037 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2021-11-07 07:38:38,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2021-11-07 07:38:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:38:38,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:38,040 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:38,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:38,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:38,254 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:38:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:38,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1527938295, now seen corresponding path program 4 times [2021-11-07 07:38:38,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:38,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287537646] [2021-11-07 07:38:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:38,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 07:38:38,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:38,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287537646] [2021-11-07 07:38:38,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287537646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:38,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851095875] [2021-11-07 07:38:38,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:38:38,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:38,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:38,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:38:38,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:38:38,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:38,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 07:38:38,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:39,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851095875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:39,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:39,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2021-11-07 07:38:39,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887643392] [2021-11-07 07:38:39,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 07:38:39,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:39,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 07:38:39,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:38:39,815 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:41,019 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-11-07 07:38:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 07:38:41,019 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 28 states have internal predecessors, (115), 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 62 [2021-11-07 07:38:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:41,020 INFO L225 Difference]: With dead ends: 82 [2021-11-07 07:38:41,031 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 07:38:41,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=3297, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:38:41,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 07:38:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 07:38:41,034 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) [2021-11-07 07:38:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 07:38:41,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-11-07 07:38:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 07:38:41,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 07:38:41,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 07:38:41,038 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,038 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,038 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,038 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:38:41,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:41,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 07:38:41,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 07:38:41,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 07:38:41,924 INFO L853 garLoopResultBuilder]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~in~0)) (.cse1 (<= 0 ULTIMATE.start_main_~buf~0)) (.cse2 (<= 3 ULTIMATE.start_main_~inlen~0))) (or (and (= ULTIMATE.start_main_~buf~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (<= ULTIMATE.start_main_~buf~0 1) (< (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))))) [2021-11-07 07:38:41,924 INFO L857 garLoopResultBuilder]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,924 INFO L853 garLoopResultBuilder]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) [2021-11-07 07:38:41,924 INFO L857 garLoopResultBuilder]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,924 INFO L860 garLoopResultBuilder]: At program point L18-23(lines 17 22) the Hoare annotation is: true [2021-11-07 07:38:41,924 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,924 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-11-07 07:38:41,925 INFO L857 garLoopResultBuilder]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 48) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L857 garLoopResultBuilder]: For program point L37-3(lines 37 48) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,926 INFO L860 garLoopResultBuilder]: At program point L55(lines 25 56) the Hoare annotation is: true [2021-11-07 07:38:41,927 INFO L860 garLoopResultBuilder]: At program point L55-1(lines 24 56) the Hoare annotation is: true [2021-11-07 07:38:41,927 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-11-07 07:38:41,927 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-11-07 07:38:41,927 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,927 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 25 56) no Hoare annotation was computed. [2021-11-07 07:38:41,927 INFO L857 garLoopResultBuilder]: For program point L32(lines 25 56) no Hoare annotation was computed. [2021-11-07 07:38:41,927 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 07:38:41,927 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,928 INFO L857 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-11-07 07:38:41,928 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 07:38:41,928 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,928 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 07:38:41,928 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,928 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse1 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) .cse0 (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (and (= ULTIMATE.start_main_~buf~0 0) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~in~0 0) .cse1))) [2021-11-07 07:38:41,928 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,929 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) .cse0 .cse1 (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse2) (and (= ULTIMATE.start_main_~buf~0 0) .cse0 .cse1 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~in~0 0) .cse2))) [2021-11-07 07:38:41,929 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,929 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))) [2021-11-07 07:38:41,929 INFO L857 garLoopResultBuilder]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,929 INFO L853 garLoopResultBuilder]: At program point L18-11(lines 17 48) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse1 (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1)))) (or (and (= ULTIMATE.start_main_~buf~0 0) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~in~0 0) .cse1) (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse1))) [2021-11-07 07:38:41,929 INFO L857 garLoopResultBuilder]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,929 INFO L853 garLoopResultBuilder]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~in~0)) (.cse1 (<= 0 ULTIMATE.start_main_~buf~0)) (.cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~buf~0 1) (<= (+ ULTIMATE.start_main_~in~0 2) ULTIMATE.start_main_~inlen~0) .cse2 (< (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 (<= 3 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) .cse2 (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))) (and (= ULTIMATE.start_main_~buf~0 0) (= ULTIMATE.start_main_~in~0 0) .cse2 (<= 2 ULTIMATE.start_main_~bufferlen~0)))) [2021-11-07 07:38:41,930 INFO L857 garLoopResultBuilder]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-11-07 07:38:41,933 INFO L731 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:41,936 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:38:41,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:38:41 BoogieIcfgContainer [2021-11-07 07:38:41,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:38:41,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:38:41,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:38:41,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:38:41,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:38:26" (3/4) ... [2021-11-07 07:38:41,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 07:38:41,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-07 07:38:41,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 07:38:41,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 07:38:41,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 07:38:42,054 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 07:38:42,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:38:42,056 INFO L168 Benchmark]: Toolchain (without parser) took 17079.34 ms. Allocated memory was 98.6 MB in the beginning and 155.2 MB in the end (delta: 56.6 MB). Free memory was 60.2 MB in the beginning and 59.3 MB in the end (delta: 835.4 kB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:38:42,056 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 98.6 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:38:42,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.17 ms. Allocated memory is still 98.6 MB. Free memory was 59.9 MB in the beginning and 75.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:38:42,058 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.53 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 73.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:38:42,058 INFO L168 Benchmark]: Boogie Preprocessor took 77.18 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:38:42,058 INFO L168 Benchmark]: RCFGBuilder took 732.52 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 61.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:38:42,059 INFO L168 Benchmark]: TraceAbstraction took 15551.79 ms. Allocated memory was 98.6 MB in the beginning and 155.2 MB in the end (delta: 56.6 MB). Free memory was 60.6 MB in the beginning and 63.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:38:42,059 INFO L168 Benchmark]: Witness Printer took 78.85 ms. Allocated memory is still 155.2 MB. Free memory was 62.5 MB in the beginning and 59.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:38:42,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 98.6 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 529.17 ms. Allocated memory is still 98.6 MB. Free memory was 59.9 MB in the beginning and 75.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.53 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 73.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.18 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 732.52 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 61.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15551.79 ms. Allocated memory was 98.6 MB in the beginning and 155.2 MB in the end (delta: 56.6 MB). Free memory was 60.6 MB in the beginning and 63.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. * Witness Printer took 78.85 ms. Allocated memory is still 155.2 MB. Free memory was 62.5 MB in the beginning and 59.3 MB in the end (delta: 3.1 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 CFG has 1 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 15.3s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 359 SDtfs, 1213 SDslu, 1024 SDs, 0 SdLazy, 1285 SolverSat, 670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 490 GetRequests, 241 SyntacticMatches, 8 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2234 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=8, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 59 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 50 NumberOfFragments, 332 HoareAnnotationTreeSize, 10 FomulaSimplifications, 18201 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 677 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 637 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 617 ConstructedInterpolants, 0 QuantifiedInterpolants, 4373 SizeOfPredicates, 35 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 15/492 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 8 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((buf == 0 && bufferlen == 2 + buflim) && bufferlen < inlen) && in == 0) && buf < buflim + 1) || ((((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && 1 <= cond) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && buf < buflim + 1) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && buf < buflim) && !(0 == cond)) || (((((buf == 0 && bufferlen == 2 + buflim) && 1 == cond) && bufferlen < inlen) && in == 0) && buf < buflim) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && bufferlen == 2 + buflim) && 1 == cond) && in + 3 + buflim <= buf + inlen) && buf < buflim) || (((((buf == 0 && bufferlen == 2 + buflim) && 1 == cond) && bufferlen < inlen) && in == 0) && buf < buflim) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((buf == 0 && !(0 == cond)) && 2 <= bufferlen) || (((((1 <= in && 0 <= buf) && 1 <= cond) && 3 <= inlen) && buf <= 1) && buf + 1 < bufferlen)) || (((((1 <= in && 0 <= buf) && 3 <= inlen) && bufferlen == 2 + buflim) && 1 == cond) && buf < buflim + 1) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((buf + 1 <= bufferlen && 0 <= buf) && !(0 == cond)) && 2 <= bufferlen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= in && 0 <= buf) && buf <= 1) && in + 2 <= inlen) && !(0 == cond)) && buf + 1 < bufferlen) || (((((1 <= in && 0 <= buf) && 3 <= inlen) && bufferlen == 2 + buflim) && !(0 == cond)) && buf < buflim + 1)) || (((buf == 0 && in == 0) && !(0 == cond)) && 2 <= bufferlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && 1 <= cond) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && buf < buflim + 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-07 07:38:42,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57f6bbb9-c98f-4697-8be7-89a34479073e/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE