./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD --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 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:08:32,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:08:32,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:08:32,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:08:32,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:08:32,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:08:32,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:08:32,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:08:32,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:08:32,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:08:32,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:08:32,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:08:32,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:08:32,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:08:32,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:08:32,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:08:32,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:08:32,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:08:32,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:08:32,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:08:32,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:08:32,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:08:32,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:08:32,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:08:32,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:08:32,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:08:32,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:08:32,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:08:32,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:08:32,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:08:32,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:08:32,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:08:32,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:08:32,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:08:32,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:08:32,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:08:32,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:08:32,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:08:32,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:08:32,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:08:32,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:08:32,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:08:32,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:08:32,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:08:32,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:08:32,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:08:32,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:08:32,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:08:32,335 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:08:32,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:08:32,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:08:32,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:08:32,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:08:32,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:08:32,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:08:32,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:08:32,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:08:32,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:08:32,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:08:32,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:08:32,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:08:32,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:08:32,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:08:32,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:08:32,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:32,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:08:32,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:08:32,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:08:32,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:08:32,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:08:32,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:08:32,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:08:32,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:08:32,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:08:32,342 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_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 [2021-10-28 23:08:32,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:08:32,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:08:32,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:08:32,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:08:32,624 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:08:32,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2021-10-28 23:08:32,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/data/e802264fd/bcd8edac895e498c9c26329ea6f948bf/FLAG208a9dc66 [2021-10-28 23:08:33,107 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:08:33,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2021-10-28 23:08:33,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/data/e802264fd/bcd8edac895e498c9c26329ea6f948bf/FLAG208a9dc66 [2021-10-28 23:08:33,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/data/e802264fd/bcd8edac895e498c9c26329ea6f948bf [2021-10-28 23:08:33,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:08:33,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:08:33,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:33,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:08:33,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:08:33,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49be23a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33, skipping insertion in model container [2021-10-28 23:08:33,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:08:33,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:08:33,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2021-10-28 23:08:33,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:33,761 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:08:33,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2021-10-28 23:08:33,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:33,786 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:08:33,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33 WrapperNode [2021-10-28 23:08:33,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:33,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:08:33,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:08:33,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:08:33,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:08:33,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:08:33,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:08:33,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:08:33,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:08:33,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:08:33,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:08:33,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:08:33,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (1/1) ... [2021-10-28 23:08:33,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:33,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:08:33,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:08:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:08:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:08:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:08:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:08:34,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:08:34,156 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:08:34,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:34 BoogieIcfgContainer [2021-10-28 23:08:34,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:08:34,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:08:34,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:08:34,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:08:34,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:08:33" (1/3) ... [2021-10-28 23:08:34,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad17c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:34, skipping insertion in model container [2021-10-28 23:08:34,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:33" (2/3) ... [2021-10-28 23:08:34,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad17c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:34, skipping insertion in model container [2021-10-28 23:08:34,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:34" (3/3) ... [2021-10-28 23:08:34,171 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_1-1.c [2021-10-28 23:08:34,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:08:34,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:08:34,226 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:08:34,233 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 [2021-10-28 23:08:34,233 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:08:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:08:34,253 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:34,254 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:08:34,254 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-28 23:08:34,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:34,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165762141] [2021-10-28 23:08:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:34,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:34,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:34,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165762141] [2021-10-28 23:08:34,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165762141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:34,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:34,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:08:34,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672518290] [2021-10-28 23:08:34,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:08:34,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:08:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:08:34,482 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:34,502 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2021-10-28 23:08:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:08:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:08:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:34,512 INFO L225 Difference]: With dead ends: 18 [2021-10-28 23:08:34,512 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 23:08:34,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:08:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 23:08:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 23:08:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-28 23:08:34,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-28 23:08:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:34,545 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-28 23:08:34,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-28 23:08:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:08:34,546 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:34,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:34,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:08:34,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:34,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-10-28 23:08:34,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:34,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8512093] [2021-10-28 23:08:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:34,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:34,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:34,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8512093] [2021-10-28 23:08:34,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8512093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:34,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321753958] [2021-10-28 23:08:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:34,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:34,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:08:34,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:08:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:34,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:08:34,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:34,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321753958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:34,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:08:34,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-10-28 23:08:34,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049693754] [2021-10-28 23:08:34,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:08:34,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:08:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:08:34,909 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:34,946 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-28 23:08:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:08:34,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:08:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:34,947 INFO L225 Difference]: With dead ends: 13 [2021-10-28 23:08:34,948 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 23:08:34,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 23:08:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:08:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-28 23:08:34,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-28 23:08:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:34,952 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-28 23:08:34,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-28 23:08:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:08:34,953 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:34,953 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:34,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:35,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:35,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:35,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 2 times [2021-10-28 23:08:35,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:35,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142562594] [2021-10-28 23:08:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:35,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:35,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:35,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142562594] [2021-10-28 23:08:35,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142562594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:35,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089762676] [2021-10-28 23:08:35,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:08:35,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:35,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:35,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:08:35,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:08:35,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:08:35,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:08:35,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:08:35,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:35,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089762676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:35,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:08:35,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-10-28 23:08:35,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183066191] [2021-10-28 23:08:35,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:08:35,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:08:35,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:35,480 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:35,566 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-28 23:08:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:08:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 23:08:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:35,568 INFO L225 Difference]: With dead ends: 14 [2021-10-28 23:08:35,568 INFO L226 Difference]: Without dead ends: 10 [2021-10-28 23:08:35,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:08:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-28 23:08:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-28 23:08:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-28 23:08:35,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-28 23:08:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:35,579 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-28 23:08:35,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-28 23:08:35,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:08:35,580 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:35,580 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:35,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:35,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:35,805 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 3 times [2021-10-28 23:08:35,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:35,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818421756] [2021-10-28 23:08:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:35,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:35,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:35,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818421756] [2021-10-28 23:08:35,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818421756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:35,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492265212] [2021-10-28 23:08:35,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:08:35,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:35,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:35,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:08:35,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:08:36,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:08:36,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:08:36,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:08:36,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:36,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492265212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:36,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:08:36,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-28 23:08:36,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20073821] [2021-10-28 23:08:36,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:08:36,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:08:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:08:36,128 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:36,217 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-28 23:08:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:08:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 23:08:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:36,219 INFO L225 Difference]: With dead ends: 15 [2021-10-28 23:08:36,219 INFO L226 Difference]: Without dead ends: 11 [2021-10-28 23:08:36,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:08:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-28 23:08:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 23:08:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-28 23:08:36,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-10-28 23:08:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:36,224 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-28 23:08:36,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-28 23:08:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:08:36,225 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:36,225 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:36,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:36,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:36,440 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 4 times [2021-10-28 23:08:36,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:36,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863947837] [2021-10-28 23:08:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:36,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:36,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:36,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863947837] [2021-10-28 23:08:36,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863947837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:36,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869459702] [2021-10-28 23:08:36,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:08:36,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:36,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:36,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:08:36,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:08:36,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:08:36,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:08:36,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:08:36,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:36,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869459702] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:36,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:08:36,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-28 23:08:36,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462856710] [2021-10-28 23:08:36,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:08:36,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:36,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:08:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:36,831 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:36,932 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-28 23:08:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:08:36,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:08:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:36,934 INFO L225 Difference]: With dead ends: 16 [2021-10-28 23:08:36,934 INFO L226 Difference]: Without dead ends: 12 [2021-10-28 23:08:36,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:08:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-28 23:08:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 23:08:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-28 23:08:36,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-10-28 23:08:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:36,938 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-28 23:08:36,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-28 23:08:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:08:36,939 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:36,940 INFO L513 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:36,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:37,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:37,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 5 times [2021-10-28 23:08:37,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:37,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792068223] [2021-10-28 23:08:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:37,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:37,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:37,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792068223] [2021-10-28 23:08:37,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792068223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:37,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374552601] [2021-10-28 23:08:37,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:08:37,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:37,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:37,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:08:37,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:08:37,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-28 23:08:37,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:08:37,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:08:37,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:08:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:37,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374552601] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:08:37,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:08:37,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-28 23:08:37,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000911623] [2021-10-28 23:08:37,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:08:37,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:08:37,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:08:37,448 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:37,580 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-28 23:08:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:08:37,580 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 23:08:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:37,582 INFO L225 Difference]: With dead ends: 17 [2021-10-28 23:08:37,583 INFO L226 Difference]: Without dead ends: 13 [2021-10-28 23:08:37,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:08:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-28 23:08:37,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-28 23:08:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-28 23:08:37,596 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-10-28 23:08:37,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:37,597 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-28 23:08:37,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-28 23:08:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:08:37,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:37,599 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:37,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:37,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:08:37,822 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 6 times [2021-10-28 23:08:37,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:37,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142655340] [2021-10-28 23:08:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:37,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:37,846 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:37,882 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:37,882 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:08:37,883 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:08:37,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:08:37,897 INFO L731 BasicCegarLoop]: Path program histogram: [6, 1] [2021-10-28 23:08:37,900 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:08:37,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:08:37 BoogieIcfgContainer [2021-10-28 23:08:37,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:08:37,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:08:37,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:08:37,938 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:08:37,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:34" (3/4) ... [2021-10-28 23:08:37,940 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:08:38,005 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:08:38,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:08:38,015 INFO L168 Benchmark]: Toolchain (without parser) took 4488.54 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 64.0 MB in the beginning and 89.1 MB in the end (delta: -25.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:38,016 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:38,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.09 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 77.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:38,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.49 ms. Allocated memory is still 98.6 MB. Free memory was 77.4 MB in the beginning and 76.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:38,020 INFO L168 Benchmark]: Boogie Preprocessor took 19.31 ms. Allocated memory is still 98.6 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 905.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:38,020 INFO L168 Benchmark]: RCFGBuilder took 317.30 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 66.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:38,021 INFO L168 Benchmark]: TraceAbstraction took 3776.67 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.7 MB in the beginning and 91.2 MB in the end (delta: -25.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:38,021 INFO L168 Benchmark]: Witness Printer took 75.88 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 89.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:38,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.09 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 77.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.49 ms. Allocated memory is still 98.6 MB. Free memory was 77.4 MB in the beginning and 76.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.31 ms. Allocated memory is still 98.6 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 905.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 317.30 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 66.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3776.67 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.7 MB in the beginning and 91.2 MB in the end (delta: -25.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 75.88 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 89.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND FALSE !(x < 6) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 163 SDs, 0 SdLazy, 246 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=6, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 10 NumberOfNonLiveVariables, 290 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:08:38,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd3a5a9c-fd41-4c7a-ba75-1668c0223036/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...