./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF --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 a425935058ca162f2ae5199ba6a1c3df525b690e27394effb254039bf608ee75 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:46:16,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:46:16,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:46:16,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:46:16,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:46:16,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:46:16,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:46:16,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:46:16,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:46:16,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:46:16,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:46:16,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:46:16,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:46:16,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:46:16,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:46:16,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:46:16,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:46:16,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:46:16,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:46:16,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:46:16,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:46:16,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:46:16,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:46:16,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:46:16,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:46:16,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:46:16,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:46:16,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:46:16,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:46:16,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:46:16,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:46:16,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:46:16,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:46:16,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:46:16,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:46:16,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:46:16,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:46:16,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:46:16,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:46:16,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:46:16,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:46:16,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:46:16,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:46:16,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:46:16,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:46:16,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:46:16,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:46:16,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:46:16,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:46:16,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:46:16,400 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:46:16,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:46:16,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:46:16,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:46:16,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:46:16,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:46:16,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:46:16,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:46:16,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:46:16,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:46:16,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:46:16,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:46:16,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:46:16,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:46:16,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:46:16,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:46:16,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:46:16,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:46:16,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:46:16,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:46:16,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:46:16,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:46:16,407 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:46:16,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:46:16,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:46:16,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:46:16,408 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_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a425935058ca162f2ae5199ba6a1c3df525b690e27394effb254039bf608ee75 [2021-11-20 06:46:16,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:46:16,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:46:16,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:46:16,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:46:16,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:46:16,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-11-20 06:46:16,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/data/e81cb5dc6/158504594afb48f9bfe4a6a7d17256a4/FLAG89f5352bf [2021-11-20 06:46:17,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:46:17,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-11-20 06:46:17,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/data/e81cb5dc6/158504594afb48f9bfe4a6a7d17256a4/FLAG89f5352bf [2021-11-20 06:46:17,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/data/e81cb5dc6/158504594afb48f9bfe4a6a7d17256a4 [2021-11-20 06:46:17,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:46:17,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:46:17,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:46:17,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:46:17,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:46:17,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:46:17" (1/1) ... [2021-11-20 06:46:17,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352a0b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:17, skipping insertion in model container [2021-11-20 06:46:17,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:46:17" (1/1) ... [2021-11-20 06:46:17,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:46:17,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:46:18,005 WARN L230 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_b2ae07ba-a9a3-44a8-a9df-89252015900c/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-11-20 06:46:18,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:46:18,034 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:46:18,049 WARN L230 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_b2ae07ba-a9a3-44a8-a9df-89252015900c/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-11-20 06:46:18,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:46:18,078 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:46:18,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18 WrapperNode [2021-11-20 06:46:18,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:46:18,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:46:18,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:46:18,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:46:18,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,127 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-11-20 06:46:18,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:46:18,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:46:18,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:46:18,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:46:18,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:46:18,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:46:18,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:46:18,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:46:18,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (1/1) ... [2021-11-20 06:46:18,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:46:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:18,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:18,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:46:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:46:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:46:18,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:46:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:46:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:46:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:46:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:46:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:46:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:46:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:46:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:46:18,344 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:46:18,346 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:46:18,514 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:46:18,522 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:46:18,522 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:46:18,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:18 BoogieIcfgContainer [2021-11-20 06:46:18,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:46:18,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:46:18,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:46:18,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:46:18,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:46:17" (1/3) ... [2021-11-20 06:46:18,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bb6bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:46:18, skipping insertion in model container [2021-11-20 06:46:18,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:18" (2/3) ... [2021-11-20 06:46:18,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bb6bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:46:18, skipping insertion in model container [2021-11-20 06:46:18,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:18" (3/3) ... [2021-11-20 06:46:18,559 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2021-11-20 06:46:18,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:46:18,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:46:18,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:46:18,675 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 [2021-11-20 06:46:18,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:46:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:46:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:46:18,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:46:18,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:18,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:46:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1533062174, now seen corresponding path program 1 times [2021-11-20 06:46:18,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:18,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843215950] [2021-11-20 06:46:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:18,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:46:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:46:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:46:18,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:18,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843215950] [2021-11-20 06:46:18,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843215950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:18,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:18,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:46:18,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271167913] [2021-11-20 06:46:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:18,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:46:18,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:18,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:46:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:46:18,984 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:46:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:46:19,017 INFO L93 Difference]: Finished difference Result 53 states and 75 transitions. [2021-11-20 06:46:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:46:19,020 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-20 06:46:19,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:46:19,032 INFO L225 Difference]: With dead ends: 53 [2021-11-20 06:46:19,032 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 06:46:19,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:46:19,042 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:46:19,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:46:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 06:46:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-20 06:46:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:46:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-20 06:46:19,093 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2021-11-20 06:46:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:46:19,093 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-20 06:46:19,094 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:46:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-20 06:46:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:46:19,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:46:19,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:19,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:46:19,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:46:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 941441246, now seen corresponding path program 1 times [2021-11-20 06:46:19,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:19,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115591563] [2021-11-20 06:46:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:19,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:19,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:46:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:46:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:46:19,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:19,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115591563] [2021-11-20 06:46:19,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115591563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:19,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:19,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:46:19,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499607346] [2021-11-20 06:46:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:19,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:46:19,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:46:19,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:46:19,385 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:46:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:46:19,653 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-11-20 06:46:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:46:19,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 06:46:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:46:19,656 INFO L225 Difference]: With dead ends: 33 [2021-11-20 06:46:19,657 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 06:46:19,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:46:19,662 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:46:19,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:46:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 06:46:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-11-20 06:46:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:46:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-11-20 06:46:19,690 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2021-11-20 06:46:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:46:19,692 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-11-20 06:46:19,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:46:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-20 06:46:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:46:19,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:46:19,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:19,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:46:19,699 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:46:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -300334175, now seen corresponding path program 1 times [2021-11-20 06:46:19,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:19,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236838246] [2021-11-20 06:46:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:19,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:46:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:46:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:46:19,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:19,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236838246] [2021-11-20 06:46:19,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236838246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:19,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:19,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:46:19,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196330634] [2021-11-20 06:46:19,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:19,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:46:19,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:46:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:46:19,875 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:46:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:46:19,888 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-11-20 06:46:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:46:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-20 06:46:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:46:19,890 INFO L225 Difference]: With dead ends: 43 [2021-11-20 06:46:19,891 INFO L226 Difference]: Without dead ends: 33 [2021-11-20 06:46:19,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:46:19,893 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:46:19,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:46:19,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-20 06:46:19,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-11-20 06:46:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:46:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-11-20 06:46:19,924 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2021-11-20 06:46:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:46:19,926 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-11-20 06:46:19,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:46:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-11-20 06:46:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 06:46:19,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:46:19,930 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:19,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:46:19,931 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:46:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:19,939 INFO L85 PathProgramCache]: Analyzing trace with hash 353142185, now seen corresponding path program 1 times [2021-11-20 06:46:19,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:19,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079200513] [2021-11-20 06:46:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:19,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:46:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:46:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:46:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:46:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:46:23,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:23,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079200513] [2021-11-20 06:46:23,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079200513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:46:23,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:46:23,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 06:46:23,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399645827] [2021-11-20 06:46:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:46:23,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:46:23,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:46:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:46:23,370 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:46:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:46:24,216 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-11-20 06:46:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:46:24,217 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-20 06:46:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:46:24,219 INFO L225 Difference]: With dead ends: 38 [2021-11-20 06:46:24,219 INFO L226 Difference]: Without dead ends: 36 [2021-11-20 06:46:24,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:46:24,222 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:46:24,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 114 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:46:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-20 06:46:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-20 06:46:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:46:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-11-20 06:46:24,236 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 33 [2021-11-20 06:46:24,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:46:24,237 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-11-20 06:46:24,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:46:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-11-20 06:46:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:46:24,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:46:24,243 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:24,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:46:24,244 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:46:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1784695982, now seen corresponding path program 1 times [2021-11-20 06:46:24,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:24,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402976565] [2021-11-20 06:46:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:24,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:46:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:46:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:46:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:46:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 06:46:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 06:46:24,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:46:24,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402976565] [2021-11-20 06:46:24,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402976565] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:46:24,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990648341] [2021-11-20 06:46:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:24,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:46:24,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:24,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:46:24,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:46:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:24,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:46:24,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 06:46:25,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:46:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 06:46:25,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990648341] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:46:25,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:46:25,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-20 06:46:25,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279917660] [2021-11-20 06:46:25,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:46:25,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:46:25,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:46:25,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:46:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:46:25,235 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:46:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:46:25,360 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-11-20 06:46:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:46:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 40 [2021-11-20 06:46:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:46:25,363 INFO L225 Difference]: With dead ends: 41 [2021-11-20 06:46:25,363 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:46:25,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:46:25,365 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:46:25,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:46:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:46:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:46:25,367 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) [2021-11-20 06:46:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:46:25,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-11-20 06:46:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:46:25,368 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:46:25,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:46:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:46:25,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:46:25,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:46:25,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:25,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:46:25,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 06:46:27,679 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 61) no Hoare annotation was computed. [2021-11-20 06:46:27,682 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 06:46:27,682 INFO L854 garLoopResultBuilder]: At program point L54-2(lines 54 58) the Hoare annotation is: (let ((.cse21 (div |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse19 (div |ULTIMATE.start_main_~index2~0#1| 4294967296))) (let ((.cse20 (* 4294967296 .cse19)) (.cse22 (* 4294967296 .cse21))) (or (let ((.cse12 (+ 2147483647 .cse22)) (.cse16 (* .cse21 (- 17179869184))) (.cse17 (* |ULTIMATE.start_main_~index1~0#1| 4)) (.cse18 (+ 2147483647 .cse20)) (.cse13 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse14 (* .cse19 (- 17179869184))) (.cse15 (* |ULTIMATE.start_main_~index2~0#1| 4))) (let ((.cse4 (select .cse13 (+ (- 17179869184) .cse14 |ULTIMATE.start_main_~#array~0#1.offset| .cse15))) (.cse5 (< .cse18 |ULTIMATE.start_main_~index2~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~index2~0#1| .cse18)) (.cse0 (select .cse13 (+ .cse16 (- 17179869184) |ULTIMATE.start_main_~#array~0#1.offset| .cse17))) (.cse6 (< .cse12 |ULTIMATE.start_main_~index1~0#1|)) (.cse7 (select .cse13 (+ .cse16 |ULTIMATE.start_main_~#array~0#1.offset| .cse17))) (.cse9 (select .cse13 (+ .cse14 |ULTIMATE.start_main_~#array~0#1.offset| .cse15))) (.cse8 (<= |ULTIMATE.start_main_~index1~0#1| .cse12))) (and (let ((.cse1 (* (div .cse9 4294967296) 4294967296)) (.cse2 (* .cse9 (- 1)))) (or (and (or (and (<= .cse0 (+ (* 4294967296 (div (+ .cse1 .cse2 .cse0) 4294967296)) 4294967295)) .cse3) (and (<= .cse0 (+ (* 4294967296 (div (+ (* (div .cse4 4294967296) 4294967296) (* .cse4 (- 1)) .cse0) 4294967296)) 4294967295)) .cse5)) .cse6) (and (<= .cse7 (+ 4294967295 (* 4294967296 (div (+ .cse1 .cse2 .cse7) 4294967296)))) .cse8))) (or (and (let ((.cse10 (* .cse0 (- 1))) (.cse11 (* (div .cse0 4294967296) 4294967296))) (or (and (<= .cse4 (+ (* 4294967296 (div (+ .cse10 .cse11 .cse4) 4294967296)) 4294967295)) .cse5) (and (<= .cse9 (+ 4294967295 (* 4294967296 (div (+ .cse10 .cse9 .cse11) 4294967296)))) .cse3))) .cse6) (and (<= .cse9 (+ (* 4294967296 (div (+ (* (div .cse7 4294967296) 4294967296) (* .cse7 (- 1)) .cse9) 4294967296)) 4294967295)) .cse8)) (<= |ULTIMATE.start_main_~index1~0#1| (+ |ULTIMATE.start_main_~index2~0#1| (* 4294967296 (div (+ (- 1) |ULTIMATE.start_main_~index1~0#1| (* (div (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296) (- 4294967296))) 4294967296)) 1))))) (<= (+ |ULTIMATE.start_main_~index1~0#1| .cse20 1) (+ |ULTIMATE.start_main_~index2~0#1| .cse22))))) [2021-11-20 06:46:27,683 INFO L854 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div |ULTIMATE.start_main_~index2~0#1| 4294967296)))) (and (<= |ULTIMATE.start_main_~index2~0#1| (+ .cse0 99999)) (<= (+ |ULTIMATE.start_main_~index1~0#1| .cse0 1) (+ |ULTIMATE.start_main_~index2~0#1| (* 4294967296 (div |ULTIMATE.start_main_~index1~0#1| 4294967296)))))) [2021-11-20 06:46:27,683 INFO L858 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2021-11-20 06:46:27,683 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 06:46:27,684 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 06:46:27,685 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 06:46:27,685 INFO L854 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div |ULTIMATE.start_main_#t~mem8#1| 4294967296))) (.cse0 (+ (* 4294967296 (div |ULTIMATE.start_main_#t~mem7#1| 4294967296)) |ULTIMATE.start_main_#t~mem8#1|))) (and (< .cse0 (+ |ULTIMATE.start_main_#t~mem7#1| .cse1 1)) (let ((.cse23 (div |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse21 (div |ULTIMATE.start_main_~index2~0#1| 4294967296))) (let ((.cse22 (* 4294967296 .cse21)) (.cse24 (* 4294967296 .cse23))) (or (let ((.cse14 (+ 2147483647 .cse24)) (.cse18 (* .cse23 (- 17179869184))) (.cse19 (* |ULTIMATE.start_main_~index1~0#1| 4)) (.cse20 (+ 2147483647 .cse22)) (.cse15 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse16 (* .cse21 (- 17179869184))) (.cse17 (* |ULTIMATE.start_main_~index2~0#1| 4))) (let ((.cse6 (select .cse15 (+ (- 17179869184) .cse16 |ULTIMATE.start_main_~#array~0#1.offset| .cse17))) (.cse7 (< .cse20 |ULTIMATE.start_main_~index2~0#1|)) (.cse5 (<= |ULTIMATE.start_main_~index2~0#1| .cse20)) (.cse2 (select .cse15 (+ .cse18 (- 17179869184) |ULTIMATE.start_main_~#array~0#1.offset| .cse19))) (.cse8 (< .cse14 |ULTIMATE.start_main_~index1~0#1|)) (.cse9 (select .cse15 (+ .cse18 |ULTIMATE.start_main_~#array~0#1.offset| .cse19))) (.cse11 (select .cse15 (+ .cse16 |ULTIMATE.start_main_~#array~0#1.offset| .cse17))) (.cse10 (<= |ULTIMATE.start_main_~index1~0#1| .cse14))) (and (let ((.cse3 (* (div .cse11 4294967296) 4294967296)) (.cse4 (* .cse11 (- 1)))) (or (and (or (and (<= .cse2 (+ (* 4294967296 (div (+ .cse3 .cse4 .cse2) 4294967296)) 4294967295)) .cse5) (and (<= .cse2 (+ (* 4294967296 (div (+ (* (div .cse6 4294967296) 4294967296) (* .cse6 (- 1)) .cse2) 4294967296)) 4294967295)) .cse7)) .cse8) (and (<= .cse9 (+ 4294967295 (* 4294967296 (div (+ .cse3 .cse4 .cse9) 4294967296)))) .cse10))) (or (and (let ((.cse12 (* .cse2 (- 1))) (.cse13 (* (div .cse2 4294967296) 4294967296))) (or (and (<= .cse6 (+ (* 4294967296 (div (+ .cse12 .cse13 .cse6) 4294967296)) 4294967295)) .cse7) (and (<= .cse11 (+ 4294967295 (* 4294967296 (div (+ .cse12 .cse11 .cse13) 4294967296)))) .cse5))) .cse8) (and (<= .cse11 (+ (* 4294967296 (div (+ (* (div .cse9 4294967296) 4294967296) (* .cse9 (- 1)) .cse11) 4294967296)) 4294967295)) .cse10))))) (<= (+ |ULTIMATE.start_main_~index1~0#1| .cse22) (+ |ULTIMATE.start_main_~index2~0#1| .cse24))))) (<= (+ |ULTIMATE.start_main_#t~mem7#1| .cse1) .cse0) (<= |ULTIMATE.start_main_~index1~0#1| (+ |ULTIMATE.start_main_~index2~0#1| (* 4294967296 (div (+ (- 1) |ULTIMATE.start_main_~index1~0#1| (* (div (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296) (- 4294967296))) 4294967296)) 1)))) [2021-11-20 06:46:27,686 INFO L858 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2021-11-20 06:46:27,686 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 59) no Hoare annotation was computed. [2021-11-20 06:46:27,686 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (div |ULTIMATE.start_main_~index2~0#1| 4294967296))) (let ((.cse0 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse2 (* 4294967296 .cse1)) (.cse3 (div |ULTIMATE.start_main_~index1~0#1| 4294967296))) (and (= |ULTIMATE.start_main_#t~mem4#1| (select .cse0 (+ (* .cse1 (- 17179869184)) |ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index2~0#1| 4)))) (<= |ULTIMATE.start_main_~index2~0#1| (+ .cse2 99999)) (= |ULTIMATE.start_main_#t~mem3#1| (select .cse0 (+ (* .cse3 (- 17179869184)) |ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index1~0#1| 4)))) (<= (+ |ULTIMATE.start_main_~index1~0#1| .cse2 1) (+ |ULTIMATE.start_main_~index2~0#1| (* 4294967296 .cse3)))))) [2021-11-20 06:46:27,687 INFO L858 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2021-11-20 06:46:27,688 INFO L854 garLoopResultBuilder]: At program point L45-1(lines 43 51) the Hoare annotation is: (let ((.cse4 (div |ULTIMATE.start_main_~index2~0#1| 4294967296))) (let ((.cse6 (* 4294967296 .cse4))) (let ((.cse0 (<= |ULTIMATE.start_main_~index2~0#1| (+ .cse6 99999)))) (or (and .cse0 (let ((.cse5 (div |ULTIMATE.start_main_~index1~0#1| 4294967296))) (or (let ((.cse3 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (let ((.cse1 (select .cse3 (+ (* .cse5 (- 17179869184)) |ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index1~0#1| 4)))) (.cse2 (select .cse3 (+ (* .cse4 (- 17179869184)) |ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index2~0#1| 4))))) (and (<= .cse1 (+ 4294967295 (* 4294967296 (div (+ (* (div .cse2 4294967296) 4294967296) (* .cse2 (- 1)) .cse1) 4294967296)))) (<= .cse2 (+ (* 4294967296 (div (+ (* (div .cse1 4294967296) 4294967296) (* .cse1 (- 1)) .cse2) 4294967296)) 4294967295))))) (<= (+ |ULTIMATE.start_main_~index1~0#1| .cse6) (+ |ULTIMATE.start_main_~index2~0#1| (* 4294967296 .cse5))))) (<= |ULTIMATE.start_main_~index1~0#1| (+ |ULTIMATE.start_main_~index2~0#1| (* 4294967296 (div (+ (- 1) |ULTIMATE.start_main_~index1~0#1| (* (div (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296) (- 4294967296))) 4294967296)) 1))) (and (= |ULTIMATE.start_main_~loop_entered~0#1| 0) .cse0))))) [2021-11-20 06:46:27,688 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2021-11-20 06:46:27,688 INFO L858 garLoopResultBuilder]: For program point L45-2(lines 34 61) no Hoare annotation was computed. [2021-11-20 06:46:27,689 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2021-11-20 06:46:27,689 INFO L858 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2021-11-20 06:46:27,689 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 20 22) the Hoare annotation is: true [2021-11-20 06:46:27,689 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-20 06:46:27,690 INFO L858 garLoopResultBuilder]: For program point L21-2(lines 20 22) no Hoare annotation was computed. [2021-11-20 06:46:27,690 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 20 22) no Hoare annotation was computed. [2021-11-20 06:46:27,690 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 23 29) the Hoare annotation is: true [2021-11-20 06:46:27,690 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-11-20 06:46:27,691 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 23 29) no Hoare annotation was computed. [2021-11-20 06:46:27,691 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2021-11-20 06:46:27,691 INFO L858 garLoopResultBuilder]: For program point L25-2(lines 23 29) no Hoare annotation was computed. [2021-11-20 06:46:27,692 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-11-20 06:46:27,697 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-20 06:46:27,699 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:46:27,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:46:27 BoogieIcfgContainer [2021-11-20 06:46:27,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:46:27,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:46:27,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:46:27,768 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:46:27,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:18" (3/4) ... [2021-11-20 06:46:27,773 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:46:27,782 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-20 06:46:27,782 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-20 06:46:27,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-20 06:46:27,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 06:46:27,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 06:46:27,790 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:46:27,868 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:46:27,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:46:27,869 INFO L158 Benchmark]: Toolchain (without parser) took 10129.88ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 82.0MB in the beginning and 65.9MB in the end (delta: 16.1MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2021-11-20 06:46:27,870 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 91.6MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:46:27,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.75ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 91.7MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:46:27,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.93ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:46:27,872 INFO L158 Benchmark]: Boogie Preprocessor took 32.68ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 89.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:46:27,872 INFO L158 Benchmark]: RCFGBuilder took 362.71ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 78.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:46:27,873 INFO L158 Benchmark]: TraceAbstraction took 9239.66ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 77.8MB in the beginning and 70.1MB in the end (delta: 7.7MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2021-11-20 06:46:27,873 INFO L158 Benchmark]: Witness Printer took 101.42ms. Allocated memory is still 153.1MB. Free memory was 70.1MB in the beginning and 65.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:46:27,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 91.6MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.75ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 91.7MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.93ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.68ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 89.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.71ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 78.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9239.66ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 77.8MB in the beginning and 70.1MB in the end (delta: 7.7MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Witness Printer took 101.42ms. Allocated memory is still 153.1MB. Free memory was 70.1MB in the beginning and 65.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 26]: 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 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 353 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 229 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 124 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, InterpolantAutomatonStates: 31, 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, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 20 PreInvPairs, 30 NumberOfFragments, 1429 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 857 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 2996 SizeOfPredicates, 2 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 93/96 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: 54]: Loop Invariant Derived loop invariant: ((((((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4] <= 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] / 4294967296 * 4294967296 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] * -1 + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4]) / 4294967296) + 4294967295 && index2 <= 2147483647 + 4294967296 * (index2 / 4294967296)) || (unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4] <= 4294967296 * ((unknown-#memory_int-unknown[array][-17179869184 + index2 / 4294967296 * -17179869184 + array + index2 * 4] / 4294967296 * 4294967296 + unknown-#memory_int-unknown[array][-17179869184 + index2 / 4294967296 * -17179869184 + array + index2 * 4] * -1 + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4]) / 4294967296) + 4294967295 && 2147483647 + 4294967296 * (index2 / 4294967296) < index2)) && 2147483647 + 4294967296 * (index1 / 4294967296) < index1) || (unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4] <= 4294967295 + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] / 4294967296 * 4294967296 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] * -1 + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4]) / 4294967296) && index1 <= 2147483647 + 4294967296 * (index1 / 4294967296))) && ((((unknown-#memory_int-unknown[array][-17179869184 + index2 / 4294967296 * -17179869184 + array + index2 * 4] <= 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4] * -1 + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4] / 4294967296 * 4294967296 + unknown-#memory_int-unknown[array][-17179869184 + index2 / 4294967296 * -17179869184 + array + index2 * 4]) / 4294967296) + 4294967295 && 2147483647 + 4294967296 * (index2 / 4294967296) < index2) || (unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] <= 4294967295 + 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + -17179869184 + array + index1 * 4] / 4294967296 * 4294967296) / 4294967296) && index2 <= 2147483647 + 4294967296 * (index2 / 4294967296))) && 2147483647 + 4294967296 * (index1 / 4294967296) < index1) || (unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] <= 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4] / 4294967296 * 4294967296 + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4]) / 4294967296) + 4294967295 && index1 <= 2147483647 + 4294967296 * (index1 / 4294967296)))) && index1 <= index2 + 4294967296 * ((-1 + index1 + (index2 + 1) / 4294967296 * -4294967296) / 4294967296) + 1) || index1 + 4294967296 * (index2 / 4294967296) + 1 <= index2 + 4294967296 * (index1 / 4294967296) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((index2 <= 4294967296 * (index2 / 4294967296) + 99999 && ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4] <= 4294967295 + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] / 4294967296 * 4294967296 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] * -1 + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4]) / 4294967296) && unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4] <= 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4] / 4294967296 * 4294967296 + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + array + index1 * 4] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + array + index2 * 4]) / 4294967296) + 4294967295) || index1 + 4294967296 * (index2 / 4294967296) <= index2 + 4294967296 * (index1 / 4294967296))) && index1 <= index2 + 4294967296 * ((-1 + index1 + (index2 + 1) / 4294967296 * -4294967296) / 4294967296) + 1) || (loop_entered == 0 && index2 <= 4294967296 * (index2 / 4294967296) + 99999) RESULT: Ultimate proved your program to be correct! [2021-11-20 06:46:27,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae07ba-a9a3-44a8-a9df-89252015900c/bin/uautomizer-DQz5hQGWxF/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