./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef4a52e45666a829b602608a46cff9c8137910dd58bdfaebe016ce17984d1ac8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:47:03,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:47:03,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:47:03,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:47:03,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:47:03,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:47:03,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:47:03,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:47:03,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:47:03,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:47:03,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:47:03,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:47:03,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:47:03,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:47:03,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:47:03,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:47:03,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:47:03,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:47:03,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:47:03,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:47:03,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:47:03,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:47:03,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:47:03,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:47:03,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:47:03,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:47:03,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:47:03,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:47:03,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:47:03,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:47:03,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:47:03,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:47:03,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:47:03,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:47:03,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:47:03,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:47:03,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:47:03,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:47:03,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:47:03,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:47:03,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:47:03,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 22:47:03,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:47:03,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:47:03,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:47:03,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:47:03,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:47:03,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:47:03,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:47:03,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:47:03,213 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:47:03,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:47:03,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:47:03,213 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:47:03,214 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:47:03,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:47:03,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:47:03,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:47:03,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:47:03,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:47:03,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:47:03,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:47:03,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:47:03,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:47:03,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:47:03,221 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_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef4a52e45666a829b602608a46cff9c8137910dd58bdfaebe016ce17984d1ac8 [2021-12-06 22:47:03,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:47:03,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:47:03,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:47:03,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:47:03,419 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:47:03,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2021-12-06 22:47:03,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/data/cd5091480/b23acc065bb34f3aa7fd082ca22c5023/FLAGefc92a9bb [2021-12-06 22:47:03,844 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:47:03,845 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2021-12-06 22:47:03,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/data/cd5091480/b23acc065bb34f3aa7fd082ca22c5023/FLAGefc92a9bb [2021-12-06 22:47:03,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/data/cd5091480/b23acc065bb34f3aa7fd082ca22c5023 [2021-12-06 22:47:03,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:47:03,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:47:03,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:47:03,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:47:03,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:47:03,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:47:03" (1/1) ... [2021-12-06 22:47:03,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cee33ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:03, skipping insertion in model container [2021-12-06 22:47:03,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:47:03" (1/1) ... [2021-12-06 22:47:03,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:47:03,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:47:03,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:47:03,983 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:47:03,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:47:04,003 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:47:04,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04 WrapperNode [2021-12-06 22:47:04,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:47:04,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:47:04,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:47:04,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:47:04,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,029 INFO L137 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2021-12-06 22:47:04,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:47:04,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:47:04,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:47:04,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:47:04,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:47:04,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:47:04,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:47:04,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:47:04,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (1/1) ... [2021-12-06 22:47:04,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:47:04,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:04,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:47:04,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:47:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:47:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:47:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:47:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:47:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:47:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:47:04,170 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:47:04,171 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:47:04,281 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:47:04,286 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:47:04,286 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 22:47:04,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:47:04 BoogieIcfgContainer [2021-12-06 22:47:04,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:47:04,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:47:04,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:47:04,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:47:04,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:47:03" (1/3) ... [2021-12-06 22:47:04,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28777252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:47:04, skipping insertion in model container [2021-12-06 22:47:04,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:04" (2/3) ... [2021-12-06 22:47:04,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28777252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:47:04, skipping insertion in model container [2021-12-06 22:47:04,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:47:04" (3/3) ... [2021-12-06 22:47:04,294 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration.c [2021-12-06 22:47:04,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:47:04,298 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-06 22:47:04,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:47:04,342 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-06 22:47:04,342 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-06 22:47:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 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) [2021-12-06 22:47:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 22:47:04,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:04,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 22:47:04,361 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:04,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2021-12-06 22:47:04,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:04,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346164212] [2021-12-06 22:47:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:04,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:04,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346164212] [2021-12-06 22:47:04,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346164212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:04,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:04,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:47:04,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800613397] [2021-12-06 22:47:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:04,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:47:04,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:47:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:47:04,515 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-06 22:47:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:04,549 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-12-06 22:47:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:47:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-06 22:47:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:04,556 INFO L225 Difference]: With dead ends: 59 [2021-12-06 22:47:04,557 INFO L226 Difference]: Without dead ends: 55 [2021-12-06 22:47:04,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:47:04,561 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 28 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:04,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 66 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-06 22:47:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2021-12-06 22:47:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 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) [2021-12-06 22:47:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-12-06 22:47:04,585 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 5 [2021-12-06 22:47:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:04,585 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-12-06 22:47:04,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-06 22:47:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-12-06 22:47:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:47:04,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:04,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:47:04,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:47:04,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:04,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash 889631015, now seen corresponding path program 1 times [2021-12-06 22:47:04,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:04,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745693527] [2021-12-06 22:47:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:04,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:04,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:04,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745693527] [2021-12-06 22:47:04,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745693527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:04,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:04,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:47:04,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14209638] [2021-12-06 22:47:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:04,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:47:04,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:47:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:47:04,620 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. 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) [2021-12-06 22:47:04,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:04,657 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-12-06 22:47:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:47:04,657 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 [2021-12-06 22:47:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:04,658 INFO L225 Difference]: With dead ends: 58 [2021-12-06 22:47:04,658 INFO L226 Difference]: Without dead ends: 58 [2021-12-06 22:47:04,659 INFO L932 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 [2021-12-06 22:47:04,661 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:04,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-06 22:47:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2021-12-06 22:47:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.48) internal successors, (37), 32 states have internal predecessors, (37), 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) [2021-12-06 22:47:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-06 22:47:04,668 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-12-06 22:47:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:04,668 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-06 22:47:04,668 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) [2021-12-06 22:47:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-06 22:47:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:47:04,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:04,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:47:04,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:47:04,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2021-12-06 22:47:04,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:04,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737422974] [2021-12-06 22:47:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:04,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:04,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:04,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737422974] [2021-12-06 22:47:04,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737422974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:04,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:04,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:47:04,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306484663] [2021-12-06 22:47:04,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:04,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:04,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:04,718 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-12-06 22:47:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:04,749 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-12-06 22:47:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2021-12-06 22:47:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:04,750 INFO L225 Difference]: With dead ends: 32 [2021-12-06 22:47:04,750 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 22:47:04,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:04,752 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:04,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 22:47:04,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 22:47:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-12-06 22:47:04,755 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2021-12-06 22:47:04,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:04,756 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-12-06 22:47:04,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-12-06 22:47:04,756 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-12-06 22:47:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:47:04,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:04,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:47:04,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:47:04,757 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2021-12-06 22:47:04,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:04,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837022597] [2021-12-06 22:47:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:04,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:04,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837022597] [2021-12-06 22:47:04,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837022597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:04,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:04,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:47:04,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756860450] [2021-12-06 22:47:04,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:04,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:04,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:04,819 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-12-06 22:47:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:04,868 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-12-06 22:47:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:47:04,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2021-12-06 22:47:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:04,869 INFO L225 Difference]: With dead ends: 55 [2021-12-06 22:47:04,869 INFO L226 Difference]: Without dead ends: 55 [2021-12-06 22:47:04,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:04,870 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:04,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 32 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-06 22:47:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2021-12-06 22:47:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 32 states have internal predecessors, (37), 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) [2021-12-06 22:47:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-06 22:47:04,874 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-12-06 22:47:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:04,875 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-06 22:47:04,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-12-06 22:47:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-06 22:47:04,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 22:47:04,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:04,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:04,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:47:04,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:04,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2021-12-06 22:47:04,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:04,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634560974] [2021-12-06 22:47:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:04,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:04,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:04,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634560974] [2021-12-06 22:47:04,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634560974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:04,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:04,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:04,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173563672] [2021-12-06 22:47:04,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:04,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:04,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:04,916 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-06 22:47:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:04,960 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-12-06 22:47:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:04,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 [2021-12-06 22:47:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:04,961 INFO L225 Difference]: With dead ends: 60 [2021-12-06 22:47:04,961 INFO L226 Difference]: Without dead ends: 60 [2021-12-06 22:47:04,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:04,962 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:04,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 45 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-06 22:47:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2021-12-06 22:47:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-12-06 22:47:04,966 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 7 [2021-12-06 22:47:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:04,966 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-12-06 22:47:04,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-06 22:47:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-12-06 22:47:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 22:47:04,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:04,967 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:04,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:47:04,967 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1480744241, now seen corresponding path program 1 times [2021-12-06 22:47:04,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:04,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527517537] [2021-12-06 22:47:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:04,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:05,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527517537] [2021-12-06 22:47:05,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527517537] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698885046] [2021-12-06 22:47:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:05,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:05,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:05,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:47:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:05,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:47:05,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:05,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:47:05,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698885046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:05,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:47:05,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-12-06 22:47:05,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008219715] [2021-12-06 22:47:05,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:05,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:47:05,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:47:05,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:47:05,115 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-12-06 22:47:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:05,166 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2021-12-06 22:47:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:47:05,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 22:47:05,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:05,167 INFO L225 Difference]: With dead ends: 75 [2021-12-06 22:47:05,167 INFO L226 Difference]: Without dead ends: 75 [2021-12-06 22:47:05,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:47:05,168 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:05,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 62 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-06 22:47:05,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 39. [2021-12-06 22:47:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 38 states have internal predecessors, (43), 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) [2021-12-06 22:47:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-12-06 22:47:05,174 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 10 [2021-12-06 22:47:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:05,175 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-12-06 22:47:05,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-12-06 22:47:05,175 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-12-06 22:47:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:47:05,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:05,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:05,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:47:05,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:05,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1361088610, now seen corresponding path program 1 times [2021-12-06 22:47:05,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:05,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867207144] [2021-12-06 22:47:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:05,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:05,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:05,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867207144] [2021-12-06 22:47:05,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867207144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:05,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:05,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:05,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322665129] [2021-12-06 22:47:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:05,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:47:05,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:47:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:05,460 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-12-06 22:47:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:05,471 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-12-06 22:47:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:47:05,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:47:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:05,472 INFO L225 Difference]: With dead ends: 37 [2021-12-06 22:47:05,472 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 22:47:05,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:05,473 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:05,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 22:47:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-06 22:47:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-12-06 22:47:05,476 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 12 [2021-12-06 22:47:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:05,476 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-12-06 22:47:05,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-12-06 22:47:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-12-06 22:47:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:47:05,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:05,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:05,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:47:05,477 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:05,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1361088609, now seen corresponding path program 1 times [2021-12-06 22:47:05,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:05,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635673892] [2021-12-06 22:47:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:05,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:05,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:05,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635673892] [2021-12-06 22:47:05,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635673892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:05,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:05,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:47:05,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48491649] [2021-12-06 22:47:05,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:05,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:05,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:05,531 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-12-06 22:47:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:05,558 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-06 22:47:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:47:05,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:47:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:05,559 INFO L225 Difference]: With dead ends: 42 [2021-12-06 22:47:05,559 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 22:47:05,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:05,559 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:05,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 47 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:05,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 22:47:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-12-06 22:47:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-12-06 22:47:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-12-06 22:47:05,562 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2021-12-06 22:47:05,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:05,563 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-12-06 22:47:05,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-12-06 22:47:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-12-06 22:47:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 22:47:05,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:05,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:05,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:47:05,564 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:05,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1343012932, now seen corresponding path program 1 times [2021-12-06 22:47:05,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:05,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20647064] [2021-12-06 22:47:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:05,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:05,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:05,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20647064] [2021-12-06 22:47:05,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20647064] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181185234] [2021-12-06 22:47:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:05,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:05,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:05,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:05,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:47:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:05,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:47:05,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:05,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:05,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-12-06 22:47:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:05,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181185234] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:05,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:05,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-12-06 22:47:05,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761383620] [2021-12-06 22:47:05,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:05,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:47:05,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:47:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:47:05,869 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:05,926 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2021-12-06 22:47:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:47:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 22:47:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:05,926 INFO L225 Difference]: With dead ends: 46 [2021-12-06 22:47:05,927 INFO L226 Difference]: Without dead ends: 46 [2021-12-06 22:47:05,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:47:05,927 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 82 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:05,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 42 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-06 22:47:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-12-06 22:47:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 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) [2021-12-06 22:47:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-06 22:47:05,930 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2021-12-06 22:47:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:05,931 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-06 22:47:05,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-06 22:47:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:47:05,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:05,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:05,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:47:06,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:06,132 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1315219428, now seen corresponding path program 1 times [2021-12-06 22:47:06,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:06,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637228606] [2021-12-06 22:47:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:06,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:06,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:06,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637228606] [2021-12-06 22:47:06,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637228606] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:06,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141786562] [2021-12-06 22:47:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:06,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:06,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:06,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:06,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:47:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:06,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:47:06,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:06,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:06,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141786562] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:06,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:06,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-06 22:47:06,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233145997] [2021-12-06 22:47:06,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:06,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:47:06,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:47:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:47:06,272 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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) [2021-12-06 22:47:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:06,344 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-12-06 22:47:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:47:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 19 [2021-12-06 22:47:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:06,345 INFO L225 Difference]: With dead ends: 51 [2021-12-06 22:47:06,345 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 22:47:06,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:47:06,346 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:06,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 55 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:47:06,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 22:47:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2021-12-06 22:47:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 43 states have internal predecessors, (47), 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) [2021-12-06 22:47:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-12-06 22:47:06,349 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 19 [2021-12-06 22:47:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:06,349 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-12-06 22:47:06,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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) [2021-12-06 22:47:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-12-06 22:47:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 22:47:06,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:06,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:06,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:47:06,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 22:47:06,552 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2077891072, now seen corresponding path program 1 times [2021-12-06 22:47:06,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:06,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510233912] [2021-12-06 22:47:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:06,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:06,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:06,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510233912] [2021-12-06 22:47:06,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510233912] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:06,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145760139] [2021-12-06 22:47:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:06,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:06,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:06,625 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:06,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:47:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:06,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:47:06,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:47:06,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:47:06,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145760139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:06,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:47:06,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-06 22:47:06,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094743763] [2021-12-06 22:47:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:06,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:06,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:47:06,864 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-12-06 22:47:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:06,865 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2021-12-06 22:47:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2021-12-06 22:47:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:06,866 INFO L225 Difference]: With dead ends: 45 [2021-12-06 22:47:06,866 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 22:47:06,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:47:06,867 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:06,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2021-12-06 22:47:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 22:47:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-12-06 22:47:06,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 42 states have internal predecessors, (45), 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) [2021-12-06 22:47:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-12-06 22:47:06,871 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 21 [2021-12-06 22:47:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:06,872 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-12-06 22:47:06,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-12-06 22:47:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-12-06 22:47:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 22:47:06,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:06,873 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:06,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:47:07,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 22:47:07,075 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:07,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -9763705, now seen corresponding path program 1 times [2021-12-06 22:47:07,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:07,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232239004] [2021-12-06 22:47:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:07,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:47:07,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:07,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232239004] [2021-12-06 22:47:07,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232239004] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:07,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182201782] [2021-12-06 22:47:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:07,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:07,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:07,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:07,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:47:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:07,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 22:47:07,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:07,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:47:07,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:47:07,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:47:07,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2021-12-06 22:47:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:07,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:07,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 22:47:07,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2021-12-06 22:47:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:07,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182201782] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:07,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:07,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 10] total 19 [2021-12-06 22:47:07,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147000733] [2021-12-06 22:47:07,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:07,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:47:07,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:07,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:47:07,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:47:07,517 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2021-12-06 22:47:07,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:07,655 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2021-12-06 22:47:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:47:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 22 [2021-12-06 22:47:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:07,657 INFO L225 Difference]: With dead ends: 72 [2021-12-06 22:47:07,657 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 22:47:07,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:47:07,658 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:07,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 87 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:47:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 22:47:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 49. [2021-12-06 22:47:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-12-06 22:47:07,662 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 22 [2021-12-06 22:47:07,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:07,662 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-12-06 22:47:07,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2021-12-06 22:47:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-12-06 22:47:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 22:47:07,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:07,663 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:07,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:47:07,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:07,864 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1532050453, now seen corresponding path program 1 times [2021-12-06 22:47:07,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:07,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408290906] [2021-12-06 22:47:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:07,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:47:07,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408290906] [2021-12-06 22:47:07,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408290906] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:07,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461013405] [2021-12-06 22:47:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:07,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:07,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:07,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:47:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:47:08,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:47:08,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:47:08,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461013405] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:08,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:08,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-06 22:47:08,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490592069] [2021-12-06 22:47:08,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:08,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:47:08,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:47:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:47:08,084 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:08,119 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-12-06 22:47:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:47:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 22:47:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:08,121 INFO L225 Difference]: With dead ends: 104 [2021-12-06 22:47:08,121 INFO L226 Difference]: Without dead ends: 104 [2021-12-06 22:47:08,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:47:08,122 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 80 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:08,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 84 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-06 22:47:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 60. [2021-12-06 22:47:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.2) internal successors, (66), 59 states have internal predecessors, (66), 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) [2021-12-06 22:47:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-12-06 22:47:08,126 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 22 [2021-12-06 22:47:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:08,126 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-12-06 22:47:08,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-12-06 22:47:08,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 22:47:08,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:08,127 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:08,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:47:08,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:47:08,328 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -248923733, now seen corresponding path program 1 times [2021-12-06 22:47:08,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288879969] [2021-12-06 22:47:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:08,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:47:08,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:08,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288879969] [2021-12-06 22:47:08,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288879969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:08,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741239637] [2021-12-06 22:47:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:08,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:08,386 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:08,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:47:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:08,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 22:47:08,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:08,432 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:47:08,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 22:47:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:47:08,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:47:08,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741239637] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:08,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:08,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2021-12-06 22:47:08,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304939238] [2021-12-06 22:47:08,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:08,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:47:08,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:47:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:47:08,602 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:08,701 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-12-06 22:47:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:47:08,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-06 22:47:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:08,702 INFO L225 Difference]: With dead ends: 103 [2021-12-06 22:47:08,702 INFO L226 Difference]: Without dead ends: 103 [2021-12-06 22:47:08,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:47:08,702 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 115 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:08,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 84 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:47:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-06 22:47:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2021-12-06 22:47:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 60 states have internal predecessors, (65), 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) [2021-12-06 22:47:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-12-06 22:47:08,705 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 23 [2021-12-06 22:47:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:08,706 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-12-06 22:47:08,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-12-06 22:47:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 22:47:08,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:08,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:08,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:47:08,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:08,909 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:08,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:08,910 INFO L85 PathProgramCache]: Analyzing trace with hash 631407484, now seen corresponding path program 2 times [2021-12-06 22:47:08,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:08,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011450648] [2021-12-06 22:47:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:08,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:47:09,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:09,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011450648] [2021-12-06 22:47:09,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011450648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:09,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48593597] [2021-12-06 22:47:09,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:47:09,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:09,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:09,034 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:09,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:47:09,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:47:09,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:47:09,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:47:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:09,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:47:09,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 22:47:09,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:47:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:47:09,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:47:09,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48593597] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:09,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:09,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2021-12-06 22:47:09,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909647351] [2021-12-06 22:47:09,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:09,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:47:09,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:47:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:47:09,323 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 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) [2021-12-06 22:47:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:09,373 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2021-12-06 22:47:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:47:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 22:47:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:09,374 INFO L225 Difference]: With dead ends: 153 [2021-12-06 22:47:09,374 INFO L226 Difference]: Without dead ends: 153 [2021-12-06 22:47:09,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:47:09,375 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:09,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 70 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-06 22:47:09,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2021-12-06 22:47:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.1857142857142857) internal successors, (166), 144 states have internal predecessors, (166), 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) [2021-12-06 22:47:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 166 transitions. [2021-12-06 22:47:09,382 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 166 transitions. Word has length 29 [2021-12-06 22:47:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:09,383 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 166 transitions. [2021-12-06 22:47:09,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 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) [2021-12-06 22:47:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 166 transitions. [2021-12-06 22:47:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 22:47:09,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:09,384 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:09,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:47:09,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 22:47:09,586 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash 39048524, now seen corresponding path program 2 times [2021-12-06 22:47:09,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:09,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779756444] [2021-12-06 22:47:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:09,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 22:47:09,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779756444] [2021-12-06 22:47:09,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779756444] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520090841] [2021-12-06 22:47:09,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:47:09,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:09,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:09,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:09,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:47:09,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:47:09,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:47:09,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:47:09,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 44 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:47:09,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 44 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:47:09,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520090841] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:09,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:09,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2021-12-06 22:47:09,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738113109] [2021-12-06 22:47:09,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:09,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:47:09,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:47:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:47:09,843 INFO L87 Difference]: Start difference. First operand 145 states and 166 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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) [2021-12-06 22:47:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:09,949 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2021-12-06 22:47:09,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:47:09,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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 37 [2021-12-06 22:47:09,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:09,950 INFO L225 Difference]: With dead ends: 155 [2021-12-06 22:47:09,951 INFO L226 Difference]: Without dead ends: 155 [2021-12-06 22:47:09,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:47:09,952 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 215 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:09,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 64 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:47:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-06 22:47:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 133. [2021-12-06 22:47:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.1640625) internal successors, (149), 132 states have internal predecessors, (149), 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) [2021-12-06 22:47:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2021-12-06 22:47:09,957 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 37 [2021-12-06 22:47:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:09,958 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2021-12-06 22:47:09,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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) [2021-12-06 22:47:09,958 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2021-12-06 22:47:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 22:47:09,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:09,959 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:09,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:47:10,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:10,160 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:10,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1591695324, now seen corresponding path program 2 times [2021-12-06 22:47:10,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:10,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77523593] [2021-12-06 22:47:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:10,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 22:47:10,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:10,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77523593] [2021-12-06 22:47:10,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77523593] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:10,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530496137] [2021-12-06 22:47:10,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:47:10,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:10,212 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:10,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:47:10,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:47:10,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:47:10,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:47:10,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:47:10,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:10,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-12-06 22:47:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:47:10,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530496137] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:10,540 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:10,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2021-12-06 22:47:10,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528618788] [2021-12-06 22:47:10,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:10,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:47:10,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:10,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:47:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:47:10,542 INFO L87 Difference]: Start difference. First operand 133 states and 149 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:10,668 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2021-12-06 22:47:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:47:10,668 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 22:47:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:10,669 INFO L225 Difference]: With dead ends: 143 [2021-12-06 22:47:10,669 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 22:47:10,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:47:10,670 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 199 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:10,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 111 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:47:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 22:47:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2021-12-06 22:47:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.1515151515151516) internal successors, (152), 136 states have internal predecessors, (152), 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) [2021-12-06 22:47:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2021-12-06 22:47:10,673 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 39 [2021-12-06 22:47:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:10,673 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2021-12-06 22:47:10,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2021-12-06 22:47:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 22:47:10,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:10,674 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-12-06 22:47:10,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:47:10,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 22:47:10,877 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:10,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1454957583, now seen corresponding path program 3 times [2021-12-06 22:47:10,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:10,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957811037] [2021-12-06 22:47:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:10,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 20 proven. 114 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 22:47:10,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957811037] [2021-12-06 22:47:10,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957811037] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618736829] [2021-12-06 22:47:10,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:47:10,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:10,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:10,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:10,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:47:10,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 22:47:10,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:47:10,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 22:47:10,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:11,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:47:11,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 22:47:11,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 22:47:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 22:47:11,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 22:47:12,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618736829] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:12,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:12,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2021-12-06 22:47:12,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842792583] [2021-12-06 22:47:12,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:12,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 22:47:12,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 22:47:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:47:12,311 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 23 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:12,883 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2021-12-06 22:47:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 22:47:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-06 22:47:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:12,884 INFO L225 Difference]: With dead ends: 163 [2021-12-06 22:47:12,884 INFO L226 Difference]: Without dead ends: 163 [2021-12-06 22:47:12,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=670, Invalid=1780, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 22:47:12,886 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 568 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:12,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 39 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 197 Invalid, 0 Unknown, 4 Unchecked, 0.1s Time] [2021-12-06 22:47:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-06 22:47:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2021-12-06 22:47:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.112) internal successors, (139), 128 states have internal predecessors, (139), 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) [2021-12-06 22:47:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2021-12-06 22:47:12,889 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 54 [2021-12-06 22:47:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:12,889 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2021-12-06 22:47:12,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2021-12-06 22:47:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 22:47:12,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:12,890 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 22:47:12,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:47:13,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:47:13,091 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:13,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash -372658966, now seen corresponding path program 3 times [2021-12-06 22:47:13,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:13,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834506133] [2021-12-06 22:47:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:13,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 67 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:47:13,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:13,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834506133] [2021-12-06 22:47:13,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834506133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:13,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797765512] [2021-12-06 22:47:13,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:47:13,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:13,215 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:13,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:47:13,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 22:47:13,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:47:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 22:47:13,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:47:13,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 22:47:13,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:47:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 22:47:13,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:47:13,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797765512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:13,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:47:13,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-12-06 22:47:13,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289767090] [2021-12-06 22:47:13,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:13,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:47:13,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:47:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:47:13,478 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-12-06 22:47:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:13,505 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2021-12-06 22:47:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:47:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 60 [2021-12-06 22:47:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:13,506 INFO L225 Difference]: With dead ends: 127 [2021-12-06 22:47:13,506 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 22:47:13,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:47:13,507 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:13,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 34 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 22:47:13,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 95. [2021-12-06 22:47:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.075268817204301) internal successors, (100), 94 states have internal predecessors, (100), 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) [2021-12-06 22:47:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2021-12-06 22:47:13,509 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 60 [2021-12-06 22:47:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:13,510 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2021-12-06 22:47:13,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-12-06 22:47:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2021-12-06 22:47:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 22:47:13,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:13,510 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:13,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:47:13,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:13,712 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -592408120, now seen corresponding path program 1 times [2021-12-06 22:47:13,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:13,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784708171] [2021-12-06 22:47:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:13,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 67 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 22:47:13,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:13,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784708171] [2021-12-06 22:47:13,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784708171] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:13,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666512511] [2021-12-06 22:47:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:13,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:13,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:13,798 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:13,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:47:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:13,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:47:13,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 46 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 22:47:13,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 46 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 22:47:14,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666512511] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:14,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:14,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2021-12-06 22:47:14,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424489214] [2021-12-06 22:47:14,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:14,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:47:14,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:47:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:47:14,003 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 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) [2021-12-06 22:47:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:14,125 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2021-12-06 22:47:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:47:14,125 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 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 65 [2021-12-06 22:47:14,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:14,126 INFO L225 Difference]: With dead ends: 95 [2021-12-06 22:47:14,126 INFO L226 Difference]: Without dead ends: 95 [2021-12-06 22:47:14,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:47:14,126 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 61 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:14,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 87 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:47:14,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-06 22:47:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-06 22:47:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.053763440860215) internal successors, (98), 94 states have internal predecessors, (98), 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) [2021-12-06 22:47:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2021-12-06 22:47:14,129 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 65 [2021-12-06 22:47:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:14,129 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2021-12-06 22:47:14,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 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) [2021-12-06 22:47:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2021-12-06 22:47:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 22:47:14,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:14,129 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:14,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 22:47:14,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:14,331 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash -600086545, now seen corresponding path program 2 times [2021-12-06 22:47:14,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:14,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335058548] [2021-12-06 22:47:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:14,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 22:47:14,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335058548] [2021-12-06 22:47:14,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335058548] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:14,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108716078] [2021-12-06 22:47:14,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:47:14,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:14,416 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:14,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 22:47:14,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 22:47:14,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:47:14,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:47:14,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-12-06 22:47:14,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:47:14,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108716078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:14,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:47:14,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-12-06 22:47:14,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045896591] [2021-12-06 22:47:14,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:14,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:14,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:14,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:47:14,824 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-12-06 22:47:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:14,825 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2021-12-06 22:47:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 70 [2021-12-06 22:47:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:14,825 INFO L225 Difference]: With dead ends: 94 [2021-12-06 22:47:14,825 INFO L226 Difference]: Without dead ends: 78 [2021-12-06 22:47:14,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:47:14,826 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:14,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2021-12-06 22:47:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-06 22:47:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-06 22:47:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 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) [2021-12-06 22:47:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2021-12-06 22:47:14,828 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 70 [2021-12-06 22:47:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:14,828 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2021-12-06 22:47:14,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-12-06 22:47:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2021-12-06 22:47:14,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 22:47:14,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:14,828 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2021-12-06 22:47:14,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 22:47:15,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:15,029 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-06 22:47:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1078992381, now seen corresponding path program 2 times [2021-12-06 22:47:15,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:15,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332064212] [2021-12-06 22:47:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:15,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 22:47:15,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:15,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332064212] [2021-12-06 22:47:15,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332064212] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:15,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179641678] [2021-12-06 22:47:15,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:47:15,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:15,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:15,164 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:15,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 22:47:15,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 22:47:15,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:47:15,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 22:47:15,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:15,211 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:47:15,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 22:47:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 153 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-06 22:47:15,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-06 22:47:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179641678] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:47:15,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:47:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2021-12-06 22:47:15,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727359151] [2021-12-06 22:47:15,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:47:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:47:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:47:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:47:15,563 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:15,730 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-12-06 22:47:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:47:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 22:47:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:15,730 INFO L225 Difference]: With dead ends: 104 [2021-12-06 22:47:15,731 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 22:47:15,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=393, Unknown=0, NotChecked=0, Total=600 [2021-12-06 22:47:15,731 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 167 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:15,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 36 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 22:47:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 22:47:15,732 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) [2021-12-06 22:47:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:47:15,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2021-12-06 22:47:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:15,732 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:47:15,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:47:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:47:15,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 22:47:15,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (7 of 8 remaining) [2021-12-06 22:47:15,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (6 of 8 remaining) [2021-12-06 22:47:15,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (5 of 8 remaining) [2021-12-06 22:47:15,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (4 of 8 remaining) [2021-12-06 22:47:15,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (3 of 8 remaining) [2021-12-06 22:47:15,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (2 of 8 remaining) [2021-12-06 22:47:15,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (1 of 8 remaining) [2021-12-06 22:47:15,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2021-12-06 22:47:15,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 22:47:15,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:15,938 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:15,939 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:47:15,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:47:15 BoogieIcfgContainer [2021-12-06 22:47:15,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:47:15,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:47:15,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:47:15,941 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:47:15,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:47:04" (3/4) ... [2021-12-06 22:47:15,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 22:47:15,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-06 22:47:15,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 22:47:15,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 22:47:15,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 22:47:15,973 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:47:15,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:47:15,973 INFO L158 Benchmark]: Toolchain (without parser) took 12111.30ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 76.4MB in the beginning and 111.4MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:47:15,973 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:47:15,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.06ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 67.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:47:15,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.61ms. Allocated memory is still 117.4MB. Free memory was 67.2MB in the beginning and 65.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:47:15,974 INFO L158 Benchmark]: Boogie Preprocessor took 16.62ms. Allocated memory is still 117.4MB. Free memory was 65.6MB in the beginning and 64.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:47:15,974 INFO L158 Benchmark]: RCFGBuilder took 240.70ms. Allocated memory is still 117.4MB. Free memory was 64.4MB in the beginning and 90.1MB in the end (delta: -25.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-12-06 22:47:15,975 INFO L158 Benchmark]: TraceAbstraction took 11651.70ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 90.1MB in the beginning and 113.4MB in the end (delta: -23.3MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-12-06 22:47:15,975 INFO L158 Benchmark]: Witness Printer took 31.92ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 111.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:47:15,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.06ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 67.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.61ms. Allocated memory is still 117.4MB. Free memory was 67.2MB in the beginning and 65.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.62ms. Allocated memory is still 117.4MB. Free memory was 65.6MB in the beginning and 64.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.70ms. Allocated memory is still 117.4MB. Free memory was 64.4MB in the beginning and 90.1MB in the end (delta: -25.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 11651.70ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 90.1MB in the beginning and 113.4MB in the end (delta: -23.3MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 31.92ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 111.4MB in the end (delta: 2.0MB). 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: 18]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 22, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2024 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2024 mSDsluCounter, 1202 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 25 IncrementalHoareTripleChecker+Unchecked, 793 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1732 IncrementalHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 409 mSDtfsCounter, 1732 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1139 GetRequests, 895 SyntacticMatches, 6 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=15, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 358 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1186 NumberOfCodeBlocks, 972 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1543 ConstructedInterpolants, 116 QuantifiedInterpolants, 13075 SizeOfPredicates, 61 NumberOfNonLiveVariables, 1680 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 48 InterpolantComputations, 11 PerfectInterpolantSequences, 1301/2646 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 22:47:15,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64662314-0647-4bb6-929c-922e1fb84700/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE