./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU --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 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:32:04,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:32:04,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:32:04,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:32:04,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:32:04,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:32:04,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:32:04,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:32:04,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:32:04,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:32:04,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:32:04,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:32:04,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:32:04,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:32:04,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:32:04,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:32:04,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:32:04,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:32:04,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:32:04,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:32:04,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:32:04,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:32:04,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:32:04,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:32:04,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:32:04,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:32:04,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:32:04,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:32:04,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:32:04,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:32:04,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:32:04,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:32:04,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:32:04,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:32:04,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:32:04,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:32:04,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:32:04,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:32:04,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:32:04,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:32:04,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:32:04,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:32:04,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:32:04,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:32:04,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:32:04,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:32:04,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:32:04,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:32:04,533 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:32:04,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:32:04,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:32:04,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:32:04,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:32:04,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:32:04,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:32:04,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:32:04,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:32:04,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:32:04,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:32:04,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:32:04,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:32:04,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:32:04,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:32:04,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:32:04,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:32:04,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:32:04,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:32:04,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:32:04,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:32:04,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:32:04,541 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:32:04,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:32:04,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:32:04,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:32:04,545 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_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 [2021-11-02 22:32:04,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:32:04,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:32:04,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:32:04,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:32:04,967 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:32:04,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/recursive/Addition01-2.c [2021-11-02 22:32:05,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/data/7dad705e3/fe99937c69134a008f5b53edabf89ae5/FLAG6ce877a6b [2021-11-02 22:32:05,641 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:32:05,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/sv-benchmarks/c/recursive/Addition01-2.c [2021-11-02 22:32:05,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/data/7dad705e3/fe99937c69134a008f5b53edabf89ae5/FLAG6ce877a6b [2021-11-02 22:32:05,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/data/7dad705e3/fe99937c69134a008f5b53edabf89ae5 [2021-11-02 22:32:05,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:32:05,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:32:05,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:32:05,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:32:05,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:32:05,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:32:05" (1/1) ... [2021-11-02 22:32:05,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d412cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:05, skipping insertion in model container [2021-11-02 22:32:05,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:32:05" (1/1) ... [2021-11-02 22:32:06,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:32:06,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:32:06,262 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_35f79974-529d-4c76-b620-c94cd791f186/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-11-02 22:32:06,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:32:06,278 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:32:06,296 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_35f79974-529d-4c76-b620-c94cd791f186/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-11-02 22:32:06,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:32:06,310 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:32:06,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06 WrapperNode [2021-11-02 22:32:06,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:32:06,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:32:06,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:32:06,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:32:06,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:32:06,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:32:06,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:32:06,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:32:06,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:32:06,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:32:06,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:32:06,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:32:06,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (1/1) ... [2021-11-02 22:32:06,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:32:06,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:06,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:32:06,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:32:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:32:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:32:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:32:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:32:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-11-02 22:32:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-11-02 22:32:06,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:32:06,745 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-02 22:32:06,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:32:06 BoogieIcfgContainer [2021-11-02 22:32:06,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:32:06,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:32:06,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:32:06,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:32:06,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:32:05" (1/3) ... [2021-11-02 22:32:06,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d07affd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:32:06, skipping insertion in model container [2021-11-02 22:32:06,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:32:06" (2/3) ... [2021-11-02 22:32:06,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d07affd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:32:06, skipping insertion in model container [2021-11-02 22:32:06,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:32:06" (3/3) ... [2021-11-02 22:32:06,760 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-11-02 22:32:06,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:32:06,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:32:06,827 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:32:06,836 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 [2021-11-02 22:32:06,850 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:32:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:32:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:32:06,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:06,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:32:06,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:32:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 663264039, now seen corresponding path program 1 times [2021-11-02 22:32:06,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:06,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250219032] [2021-11-02 22:32:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:06,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:07,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:07,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250219032] [2021-11-02 22:32:07,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250219032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:32:07,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:32:07,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:32:07,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927981410] [2021-11-02 22:32:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:32:07,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:32:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:32:07,582 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:32:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:07,720 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-11-02 22:32:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:32:07,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-02 22:32:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:07,733 INFO L225 Difference]: With dead ends: 34 [2021-11-02 22:32:07,734 INFO L226 Difference]: Without dead ends: 21 [2021-11-02 22:32:07,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:32:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-02 22:32:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-02 22:32:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-02 22:32:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-11-02 22:32:07,801 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2021-11-02 22:32:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:07,803 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-11-02 22:32:07,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:32:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-11-02 22:32:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:32:07,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:07,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:32:07,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:32:07,808 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:32:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1508496640, now seen corresponding path program 1 times [2021-11-02 22:32:07,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:07,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432788263] [2021-11-02 22:32:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:07,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:07,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:07,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432788263] [2021-11-02 22:32:07,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432788263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:32:07,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:32:07,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:32:07,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743058219] [2021-11-02 22:32:07,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:32:07,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:32:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:32:07,952 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:32:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:07,992 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-11-02 22:32:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:32:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-02 22:32:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:07,996 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:32:07,997 INFO L226 Difference]: Without dead ends: 23 [2021-11-02 22:32:07,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:32:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-02 22:32:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-11-02 22:32:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-02 22:32:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-02 22:32:08,015 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-11-02 22:32:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:08,016 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-02 22:32:08,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:32:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-02 22:32:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-02 22:32:08,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:08,021 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:32:08,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:32:08,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:32:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1330690599, now seen corresponding path program 1 times [2021-11-02 22:32:08,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:08,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022178288] [2021-11-02 22:32:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:08,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-02 22:32:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:32:08,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:08,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022178288] [2021-11-02 22:32:08,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022178288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:08,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697442618] [2021-11-02 22:32:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:08,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:08,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:08,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:08,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:32:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:08,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 22:32:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:32:08,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697442618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:08,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:08,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-11-02 22:32:08,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162601430] [2021-11-02 22:32:08,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:32:08,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:32:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:32:08,914 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 22:32:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:09,213 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-11-02 22:32:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:32:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-11-02 22:32:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:09,216 INFO L225 Difference]: With dead ends: 35 [2021-11-02 22:32:09,217 INFO L226 Difference]: Without dead ends: 29 [2021-11-02 22:32:09,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:32:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-02 22:32:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2021-11-02 22:32:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-02 22:32:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-02 22:32:09,226 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 19 [2021-11-02 22:32:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:09,227 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-02 22:32:09,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 22:32:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-02 22:32:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 22:32:09,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:09,229 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:32:09,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:32:09,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:09,451 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:32:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1159446067, now seen corresponding path program 1 times [2021-11-02 22:32:09,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:09,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457305364] [2021-11-02 22:32:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:09,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:32:09,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:09,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457305364] [2021-11-02 22:32:09,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457305364] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:09,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840968705] [2021-11-02 22:32:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:09,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:09,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:09,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:09,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:32:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:09,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:32:09,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:32:09,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840968705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:09,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:09,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-02 22:32:09,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583429635] [2021-11-02 22:32:09,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:32:09,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:09,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:32:09,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:32:09,823 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:32:09,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:09,889 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-11-02 22:32:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:32:09,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-11-02 22:32:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:09,891 INFO L225 Difference]: With dead ends: 28 [2021-11-02 22:32:09,891 INFO L226 Difference]: Without dead ends: 24 [2021-11-02 22:32:09,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:32:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-02 22:32:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-02 22:32:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-02 22:32:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-11-02 22:32:09,910 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 20 [2021-11-02 22:32:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:09,910 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-11-02 22:32:09,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:32:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-11-02 22:32:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 22:32:09,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:09,913 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:32:09,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 22:32:10,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:10,114 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:32:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1187670683, now seen corresponding path program 1 times [2021-11-02 22:32:10,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:10,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706914935] [2021-11-02 22:32:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:10,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-02 22:32:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:32:10,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:10,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706914935] [2021-11-02 22:32:10,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706914935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:10,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750988345] [2021-11-02 22:32:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:10,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:10,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:10,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:10,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:32:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:32:10,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:32:10,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750988345] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:10,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:10,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-02 22:32:10,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994554045] [2021-11-02 22:32:10,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:32:10,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:32:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:32:10,506 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-02 22:32:10,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:10,561 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-11-02 22:32:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:32:10,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2021-11-02 22:32:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:10,564 INFO L225 Difference]: With dead ends: 29 [2021-11-02 22:32:10,564 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:32:10,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:32:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:32:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:32:10,569 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) [2021-11-02 22:32:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:32:10,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-11-02 22:32:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:10,570 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:32:10,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-02 22:32:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:32:10,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:32:10,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:32:10,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:32:10,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:10,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:32:10,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:32:10,847 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 22:32:10,847 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 22:32:10,848 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-11-02 22:32:10,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 22:32:10,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 22:32:10,848 INFO L860 garLoopResultBuilder]: At program point L28(lines 28 47) the Hoare annotation is: true [2021-11-02 22:32:10,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2021-11-02 22:32:10,849 INFO L857 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2021-11-02 22:32:10,849 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-11-02 22:32:10,850 INFO L853 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~n~0) [2021-11-02 22:32:10,850 INFO L857 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2021-11-02 22:32:10,851 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2021-11-02 22:32:10,851 INFO L853 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (<= (+ addition_~n 1) 0) (= |addition_#in~n| addition_~n)) [2021-11-02 22:32:10,851 INFO L857 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2021-11-02 22:32:10,852 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-02 22:32:10,852 INFO L857 garLoopResultBuilder]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2021-11-02 22:32:10,852 INFO L853 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (<= 1 addition_~n) (= |addition_#in~n| addition_~n)) [2021-11-02 22:32:10,852 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2021-11-02 22:32:10,853 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-11-02 22:32:10,853 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-11-02 22:32:10,853 INFO L860 garLoopResultBuilder]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-11-02 22:32:10,853 INFO L857 garLoopResultBuilder]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2021-11-02 22:32:10,860 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-02 22:32:10,861 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:32:10,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:32:10 BoogieIcfgContainer [2021-11-02 22:32:10,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:32:10,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:32:10,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:32:10,870 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:32:10,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:32:06" (3/4) ... [2021-11-02 22:32:10,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:32:10,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2021-11-02 22:32:10,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-02 22:32:10,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-02 22:32:10,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:32:10,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:32:10,936 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:32:10,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:32:10,938 INFO L168 Benchmark]: Toolchain (without parser) took 4956.60 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 51.8 MB in the beginning and 63.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:32:10,939 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 68.2 MB in the beginning and 68.2 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:32:10,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.76 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 83.5 MB in the end (delta: -31.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:32:10,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 82.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:32:10,941 INFO L168 Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 81.0 MB in the end (delta: 958.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:32:10,941 INFO L168 Benchmark]: RCFGBuilder took 370.00 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 71.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:32:10,942 INFO L168 Benchmark]: TraceAbstraction took 4119.61 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.6 MB in the beginning and 66.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-11-02 22:32:10,943 INFO L168 Benchmark]: Witness Printer took 66.26 ms. Allocated memory is still 130.0 MB. Free memory was 66.0 MB in the beginning and 63.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:32:10,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 68.2 MB in the beginning and 68.2 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.76 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 83.5 MB in the end (delta: -31.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 82.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.09 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 81.0 MB in the end (delta: 958.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 370.00 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 71.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4119.61 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.6 MB in the beginning and 66.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * Witness Printer took 66.26 ms. Allocated memory is still 130.0 MB. Free memory was 66.0 MB in the beginning and 63.3 MB in the end (delta: 2.7 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: 45]: 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 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 69 SDslu, 168 SDs, 0 SdLazy, 291 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 27 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 9 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 33/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-02 22:32:11,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f79974-529d-4c76-b620-c94cd791f186/bin/uautomizer-tBqnrhUYjU/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