./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC --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 53bb793d04b8582ac13d1842856082c93ca272cf ........................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:20:08,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:20:08,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:20:08,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:20:08,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:20:08,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:20:08,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:20:08,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:20:08,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:20:08,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:20:08,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:20:08,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:20:08,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:20:08,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:20:08,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:20:08,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:20:08,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:20:08,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:20:08,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:20:08,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:20:08,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:20:08,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:20:08,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:20:08,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:20:08,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:20:08,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:20:08,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:20:08,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:20:08,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:20:08,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:20:08,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:20:08,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:20:08,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:20:08,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:20:08,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:20:08,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:20:08,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:20:08,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:20:08,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:20:08,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:20:08,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:20:08,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:20:08,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:20:08,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:20:08,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:20:08,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:20:08,773 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:20:08,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:20:08,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:20:08,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:20:08,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:20:08,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:20:08,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:20:08,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:20:08,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:20:08,783 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:20:08,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:20:08,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:20:08,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:20:08,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:20:08,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:20:08,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:20:08,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:20:08,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:20:08,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:20:08,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:20:08,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:20:08,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:20:08,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:20:08,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:20:08,786 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_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53bb793d04b8582ac13d1842856082c93ca272cf [2021-10-11 00:20:09,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:20:09,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:20:09,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:20:09,069 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:20:09,070 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:20:09,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2021-10-11 00:20:09,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/data/d8ee54e5e/5a6f88f46f94443c9b40fc04836cdb19/FLAG12d0e6ee2 [2021-10-11 00:20:09,644 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:20:09,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2021-10-11 00:20:09,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/data/d8ee54e5e/5a6f88f46f94443c9b40fc04836cdb19/FLAG12d0e6ee2 [2021-10-11 00:20:09,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/data/d8ee54e5e/5a6f88f46f94443c9b40fc04836cdb19 [2021-10-11 00:20:09,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:20:10,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:20:10,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:20:10,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:20:10,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:20:10,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:20:09" (1/1) ... [2021-10-11 00:20:10,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3b41e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10, skipping insertion in model container [2021-10-11 00:20:10,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:20:09" (1/1) ... [2021-10-11 00:20:10,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:20:10,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:20:10,177 WARN L226 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_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/sv-benchmarks/c/loop-lit/cggmp2005_variant.i[895,908] [2021-10-11 00:20:10,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:20:10,218 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:20:10,230 WARN L226 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_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/sv-benchmarks/c/loop-lit/cggmp2005_variant.i[895,908] [2021-10-11 00:20:10,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:20:10,250 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:20:10,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10 WrapperNode [2021-10-11 00:20:10,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:20:10,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:20:10,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:20:10,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:20:10,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:20:10,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:20:10,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:20:10,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:20:10,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... [2021-10-11 00:20:10,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:20:10,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:20:10,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:20:10,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:20:10,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:20:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:20:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:20:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:20:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:20:10,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:20:10,677 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 00:20:10,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:10 BoogieIcfgContainer [2021-10-11 00:20:10,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:20:10,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:20:10,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:20:10,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:20:10,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:20:09" (1/3) ... [2021-10-11 00:20:10,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24aa5077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:20:10, skipping insertion in model container [2021-10-11 00:20:10,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:10" (2/3) ... [2021-10-11 00:20:10,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24aa5077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:20:10, skipping insertion in model container [2021-10-11 00:20:10,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:10" (3/3) ... [2021-10-11 00:20:10,691 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2021-10-11 00:20:10,712 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:20:10,718 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:20:10,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:20:10,761 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:20:10,761 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:20:10,761 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:20:10,761 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:20:10,761 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:20:10,764 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:20:10,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:20:10,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:20:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 00:20:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:20:10,785 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:10,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:10,786 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:10,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089480, now seen corresponding path program 1 times [2021-10-11 00:20:10,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:10,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376581600] [2021-10-11 00:20:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:10,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376581600] [2021-10-11 00:20:10,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:10,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:20:10,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687372233] [2021-10-11 00:20:10,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:20:10,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:11,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:20:11,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:20:11,014 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-10-11 00:20:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:11,030 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-11 00:20:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:20:11,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 00:20:11,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:11,040 INFO L225 Difference]: With dead ends: 20 [2021-10-11 00:20:11,040 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 00:20:11,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:20:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 00:20:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 00:20:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 00:20:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 00:20:11,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-11 00:20:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:11,076 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 00:20:11,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:20:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 00:20:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:20:11,077 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:11,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:11,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:20:11,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:11,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:11,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970316, now seen corresponding path program 1 times [2021-10-11 00:20:11,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:11,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276115210] [2021-10-11 00:20:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:11,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276115210] [2021-10-11 00:20:11,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:11,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:20:11,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893131208] [2021-10-11 00:20:11,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:20:11,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:11,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:11,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:11,143 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2021-10-11 00:20:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:11,171 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-11 00:20:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:11,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 00:20:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:11,184 INFO L225 Difference]: With dead ends: 13 [2021-10-11 00:20:11,184 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 00:20:11,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 00:20:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:20:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:20:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-11 00:20:11,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-11 00:20:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:11,188 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-11 00:20:11,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:20:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-11 00:20:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:20:11,189 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:11,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:11,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:20:11,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash 183170324, now seen corresponding path program 1 times [2021-10-11 00:20:11,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:11,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175643442] [2021-10-11 00:20:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:11,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175643442] [2021-10-11 00:20:11,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234209460] [2021-10-11 00:20:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:20:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:11,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 00:20:11,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:20:11,701 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:20:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:11,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:20:11,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-11 00:20:11,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051593093] [2021-10-11 00:20:11,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:20:11,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:11,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:20:11,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:20:11,729 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 11 states. [2021-10-11 00:20:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:11,843 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-11 00:20:11,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:20:11,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2021-10-11 00:20:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:11,844 INFO L225 Difference]: With dead ends: 14 [2021-10-11 00:20:11,845 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 00:20:11,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:20:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 00:20:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 00:20:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:20:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 00:20:11,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-11 00:20:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:11,849 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 00:20:11,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:20:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 00:20:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:20:11,850 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:11,850 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:12,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 00:20:12,076 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:12,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978124, now seen corresponding path program 2 times [2021-10-11 00:20:12,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:12,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789265466] [2021-10-11 00:20:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:12,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789265466] [2021-10-11 00:20:12,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194956720] [2021-10-11 00:20:12,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:20:12,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:20:12,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:20:12,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-11 00:20:12,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:20:12,648 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-10-11 00:20:12,668 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-10-11 00:20:12,674 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:20:12,682 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:20:12,691 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:20:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:12,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:20:12,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-11 00:20:12,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971964925] [2021-10-11 00:20:12,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:20:12,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:12,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:20:12,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:20:12,723 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 12 states. [2021-10-11 00:20:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:13,057 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-11 00:20:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:20:13,057 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 9 [2021-10-11 00:20:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:13,058 INFO L225 Difference]: With dead ends: 13 [2021-10-11 00:20:13,059 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:20:13,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:20:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:20:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:20:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:20:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:20:13,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-11 00:20:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:13,062 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:20:13,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:20:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:20:13,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:20:13,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:20:13,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:20:13,348 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:20:13,348 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 00:20:13,348 INFO L265 CegarLoopResult]: At program point L36(lines 24 37) the Hoare annotation is: true [2021-10-11 00:20:13,349 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:20:13,349 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:20:13,349 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:20:13,349 INFO L262 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2021-10-11 00:20:13,349 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~hi~0 .cse0))) [2021-10-11 00:20:13,350 INFO L262 CegarLoopResult]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2021-10-11 00:20:13,350 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 00:20:13,350 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 00:20:13,350 INFO L265 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-10-11 00:20:13,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:20:13 BoogieIcfgContainer [2021-10-11 00:20:13,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:20:13,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:20:13,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:20:13,367 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:20:13,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:10" (3/4) ... [2021-10-11 00:20:13,371 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:20:13,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:20:13,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:20:13,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:20:13,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:20:13,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b644f7d9-5f7a-438a-97ae-ad4bcf6e7e38/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:20:13,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:20:13,418 INFO L168 Benchmark]: Toolchain (without parser) took 3417.73 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 68.8 MB in the beginning and 82.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:13,419 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 81.8 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:20:13,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.47 ms. Allocated memory is still 98.6 MB. Free memory was 68.5 MB in the beginning and 77.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:13,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.08 ms. Allocated memory is still 98.6 MB. Free memory was 77.0 MB in the beginning and 75.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:13,421 INFO L168 Benchmark]: Boogie Preprocessor took 20.31 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 74.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:20:13,422 INFO L168 Benchmark]: RCFGBuilder took 370.83 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 63.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:13,422 INFO L168 Benchmark]: TraceAbstraction took 2685.17 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 63.0 MB in the beginning and 85.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:13,423 INFO L168 Benchmark]: Witness Printer took 50.67 ms. Allocated memory is still 121.6 MB. Free memory was 85.0 MB in the beginning and 82.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:13,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 81.8 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.47 ms. Allocated memory is still 98.6 MB. Free memory was 68.5 MB in the beginning and 77.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.08 ms. Allocated memory is still 98.6 MB. Free memory was 77.0 MB in the beginning and 75.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.31 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 74.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 370.83 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 63.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2685.17 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 63.0 MB in the beginning and 85.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Witness Printer took 50.67 ms. Allocated memory is still 121.6 MB. Free memory was 85.0 MB in the beginning and 82.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (lo + 2 * mid <= hi && lo <= hi) && hi <= lo + 2 * mid - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 21 SDslu, 26 SDs, 0 SdLazy, 67 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 99 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2149 SizeOfPredicates, 8 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...