./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/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_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:49:54,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:49:54,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:49:54,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:49:54,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:49:54,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:49:54,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:49:54,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:49:54,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:49:54,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:49:54,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:49:54,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:49:54,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:49:54,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:49:54,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:49:54,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:49:54,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:49:54,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:49:54,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:49:54,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:49:54,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:49:54,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:49:54,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:49:54,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:49:54,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:49:54,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:49:54,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:49:54,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:49:54,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:49:54,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:49:54,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:49:54,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:49:54,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:49:54,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:49:54,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:49:54,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:49:54,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:49:54,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:49:54,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:49:54,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:49:54,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:49:54,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:49:54,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:49:54,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:49:54,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:49:54,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:49:54,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:49:54,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:49:54,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:49:54,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:49:54,221 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:49:54,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:49:54,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:49:54,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:49:54,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:49:54,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:49:54,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:49:54,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:49:54,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:49:54,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:49:54,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:49:54,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:49:54,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:49:54,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:49:54,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:49:54,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:49:54,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:49:54,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:49:54,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:49:54,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:49:54,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:49:54,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:49:54,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:49:54,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:49:54,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:49:54,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:49:54,224 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_29a5b20f-0cdf-4b7c-b957-c4d05691168a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 [2021-12-06 23:49:54,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:49:54,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:49:54,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:49:54,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:49:54,416 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:49:54,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-acceleration/array_3-1.i [2021-12-06 23:49:54,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/data/ef317c54b/4a65e91daaa044dc8a3c7b6566dd2eea/FLAG060cf9aec [2021-12-06 23:49:54,841 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:49:54,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/sv-benchmarks/c/loop-acceleration/array_3-1.i [2021-12-06 23:49:54,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/data/ef317c54b/4a65e91daaa044dc8a3c7b6566dd2eea/FLAG060cf9aec [2021-12-06 23:49:54,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/data/ef317c54b/4a65e91daaa044dc8a3c7b6566dd2eea [2021-12-06 23:49:54,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:49:54,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:49:54,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:49:54,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:49:54,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:49:54,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:49:54" (1/1) ... [2021-12-06 23:49:54,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd904e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:54, skipping insertion in model container [2021-12-06 23:49:54,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:49:54" (1/1) ... [2021-12-06 23:49:54,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:49:54,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:49:55,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/sv-benchmarks/c/loop-acceleration/array_3-1.i[849,862] [2021-12-06 23:49:55,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:49:55,018 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:49:55,027 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/sv-benchmarks/c/loop-acceleration/array_3-1.i[849,862] [2021-12-06 23:49:55,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:49:55,040 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:49:55,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55 WrapperNode [2021-12-06 23:49:55,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:49:55,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:49:55,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:49:55,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:49:55,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,070 INFO L137 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2021-12-06 23:49:55,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:49:55,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:49:55,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:49:55,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:49:55,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:49:55,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:49:55,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:49:55,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:49:55,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (1/1) ... [2021-12-06 23:49:55,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:49:55,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:49:55,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:49:55,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:49:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:49:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:49:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:49:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:49:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:49:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:49:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:49:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:49:55,197 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:49:55,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:49:55,261 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:49:55,265 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:49:55,265 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:49:55,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:49:55 BoogieIcfgContainer [2021-12-06 23:49:55,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:49:55,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:49:55,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:49:55,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:49:55,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:49:54" (1/3) ... [2021-12-06 23:49:55,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640c58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:49:55, skipping insertion in model container [2021-12-06 23:49:55,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:49:55" (2/3) ... [2021-12-06 23:49:55,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640c58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:49:55, skipping insertion in model container [2021-12-06 23:49:55,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:49:55" (3/3) ... [2021-12-06 23:49:55,273 INFO L111 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2021-12-06 23:49:55,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:49:55,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:49:55,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:49:55,318 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:49:55,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:49:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 23:49:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 23:49:55,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:49:55,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:49:55,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:49:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:49:55,338 INFO L85 PathProgramCache]: Analyzing trace with hash 212411183, now seen corresponding path program 1 times [2021-12-06 23:49:55,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:49:55,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652830205] [2021-12-06 23:49:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:55,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:49:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:55,453 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 23:49:55,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:49:55,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652830205] [2021-12-06 23:49:55,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652830205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:49:55,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:49:55,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:49:55,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55633665] [2021-12-06 23:49:55,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:49:55,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:49:55,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:49:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:49:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:49:55,491 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:49:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:49:55,534 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2021-12-06 23:49:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:49:55,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 23:49:55,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:49:55,560 INFO L225 Difference]: With dead ends: 44 [2021-12-06 23:49:55,560 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 23:49:55,563 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 23:49:55,573 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:49:55,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:49:55,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 23:49:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-12-06 23:49:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:49:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-12-06 23:49:55,608 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2021-12-06 23:49:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:49:55,609 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-06 23:49:55,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:49:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-12-06 23:49:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 23:49:55,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:49:55,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:49:55,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:49:55,611 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:49:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:49:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1562587830, now seen corresponding path program 1 times [2021-12-06 23:49:55,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:49:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944254463] [2021-12-06 23:49:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:55,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:49:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:49:55,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:49:55,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944254463] [2021-12-06 23:49:55,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944254463] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:49:55,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366220090] [2021-12-06 23:49:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:55,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:49:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:49:55,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:49:55,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:49:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:49:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:49:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:49:55,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:49:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:49:55,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366220090] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:49:55,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:49:55,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-06 23:49:55,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687957913] [2021-12-06 23:49:55,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:49:55,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:49:55,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:49:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:49:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:49:55,772 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:49:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:49:55,821 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-12-06 23:49:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:49:55,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 23:49:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:49:55,823 INFO L225 Difference]: With dead ends: 55 [2021-12-06 23:49:55,823 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 23:49:55,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:49:55,826 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:49:55,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 24 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:49:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 23:49:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-12-06 23:49:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 23:49:55,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-06 23:49:55,832 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2021-12-06 23:49:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:49:55,833 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-06 23:49:55,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:49:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-06 23:49:55,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:49:55,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:49:55,834 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:49:55,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:49:56,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-06 23:49:56,037 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:49:56,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:49:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash -10605200, now seen corresponding path program 2 times [2021-12-06 23:49:56,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:49:56,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194844954] [2021-12-06 23:49:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:56,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:49:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:49:56,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:49:56,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194844954] [2021-12-06 23:49:56,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194844954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:49:56,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:49:56,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:49:56,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949021839] [2021-12-06 23:49:56,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:49:56,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:49:56,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:49:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:49:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:49:56,210 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:49:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:49:56,231 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-12-06 23:49:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:49:56,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 23:49:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:49:56,233 INFO L225 Difference]: With dead ends: 35 [2021-12-06 23:49:56,234 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 23:49:56,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:49:56,235 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:49:56,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:49:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 23:49:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 23:49:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) 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 23:49:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-12-06 23:49:56,240 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-12-06 23:49:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:49:56,241 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-12-06 23:49:56,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:49:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-12-06 23:49:56,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:49:56,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:49:56,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:49:56,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:49:56,242 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:49:56,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:49:56,243 INFO L85 PathProgramCache]: Analyzing trace with hash 637014601, now seen corresponding path program 1 times [2021-12-06 23:49:56,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:49:56,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508949329] [2021-12-06 23:49:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:56,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:49:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:49:56,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:49:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508949329] [2021-12-06 23:49:56,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508949329] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:49:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24228161] [2021-12-06 23:49:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:56,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:49:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:49:56,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:49:56,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:49:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:56,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:49:56,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:49:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:49:56,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:49:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:49:56,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24228161] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:49:56,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:49:56,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2021-12-06 23:49:56,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231709436] [2021-12-06 23:49:56,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:49:56,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:49:56,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:49:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:49:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:49:56,434 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 23:49:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:49:56,562 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2021-12-06 23:49:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:49:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) Word has length 21 [2021-12-06 23:49:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:49:56,563 INFO L225 Difference]: With dead ends: 101 [2021-12-06 23:49:56,563 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 23:49:56,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:49:56,565 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 131 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:49:56,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 34 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:49:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 23:49:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 23:49:56,566 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 23:49:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 23:49:56,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-12-06 23:49:56,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:49:56,566 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:49:56,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 23:49:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 23:49:56,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 23:49:56,569 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:49:56,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:49:56,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:49:56,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 23:49:56,810 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 23:49:56,811 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 31) no Hoare annotation was computed. [2021-12-06 23:49:56,811 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-12-06 23:49:56,812 INFO L861 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2021-12-06 23:49:56,812 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 23:49:56,813 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 23:49:56,813 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 23:49:56,814 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 28 32) no Hoare annotation was computed. [2021-12-06 23:49:56,814 INFO L858 garLoopResultBuilder]: For program point L28-3(lines 28 32) no Hoare annotation was computed. [2021-12-06 23:49:56,815 INFO L854 garLoopResultBuilder]: At program point L28-4(lines 28 32) the Hoare annotation is: (< |ULTIMATE.start_main_~i~0#1| 1024) [2021-12-06 23:49:56,816 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-12-06 23:49:56,816 INFO L858 garLoopResultBuilder]: For program point L28-5(lines 28 32) no Hoare annotation was computed. [2021-12-06 23:49:56,816 INFO L858 garLoopResultBuilder]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2021-12-06 23:49:56,816 INFO L861 garLoopResultBuilder]: At program point L24-3(lines 24 26) the Hoare annotation is: true [2021-12-06 23:49:56,816 INFO L858 garLoopResultBuilder]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2021-12-06 23:49:56,817 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 34) no Hoare annotation was computed. [2021-12-06 23:49:56,817 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-12-06 23:49:56,821 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-12-06 23:49:56,823 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:49:56,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:49:56 BoogieIcfgContainer [2021-12-06 23:49:56,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:49:56,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:49:56,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:49:56,835 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:49:56,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:49:55" (3/4) ... [2021-12-06 23:49:56,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 23:49:56,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-06 23:49:56,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 23:49:56,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-06 23:49:56,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 23:49:56,868 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:49:56,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:49:56,869 INFO L158 Benchmark]: Toolchain (without parser) took 2010.47ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 79.4MB in the beginning and 101.2MB in the end (delta: -21.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-06 23:49:56,869 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:49:56,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.61ms. Allocated memory is still 107.0MB. Free memory was 79.1MB in the beginning and 83.0MB in the end (delta: -3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:49:56,869 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.19ms. Allocated memory is still 107.0MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:49:56,870 INFO L158 Benchmark]: Boogie Preprocessor took 14.96ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 80.6MB in the end (delta: 903.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:49:56,870 INFO L158 Benchmark]: RCFGBuilder took 179.71ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 71.6MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:49:56,870 INFO L158 Benchmark]: TraceAbstraction took 1566.05ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 71.0MB in the beginning and 104.1MB in the end (delta: -33.1MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-12-06 23:49:56,870 INFO L158 Benchmark]: Witness Printer took 33.78ms. Allocated memory is still 140.5MB. Free memory was 104.1MB in the beginning and 101.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:49:56,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.61ms. Allocated memory is still 107.0MB. Free memory was 79.1MB in the beginning and 83.0MB in the end (delta: -3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.19ms. Allocated memory is still 107.0MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.96ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 80.6MB in the end (delta: 903.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 179.71ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 71.6MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1566.05ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 71.0MB in the beginning and 104.1MB in the end (delta: -33.1MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Witness Printer took 33.78ms. Allocated memory is still 140.5MB. Free memory was 104.1MB in the beginning and 101.2MB in the end (delta: 2.9MB). 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: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 186 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 186 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 36 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 25 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 36/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: i < 1024 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-06 23:49:56,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5b20f-0cdf-4b7c-b957-c4d05691168a/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