./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c973e7f310a848892a18e3f534717b85b3f4d9e6c87fd06bd7bcf01c28300fa4 ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:12:21,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:12:21,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:12:21,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:12:21,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:12:21,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:12:21,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:12:21,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:12:21,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:12:21,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:12:21,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:12:21,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:12:21,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:12:21,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:12:21,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:12:21,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:12:21,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:12:21,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:12:21,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:12:21,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:12:21,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:12:21,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:12:21,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:12:21,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:12:21,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:12:21,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:12:21,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:12:21,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:12:21,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:12:21,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:12:21,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:12:21,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:12:21,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:12:21,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:12:21,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:12:21,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:12:21,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:12:21,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:12:21,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:12:21,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:12:21,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:12:21,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:12:21,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:12:21,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:12:21,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:12:21,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:12:21,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:12:21,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:12:21,938 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:12:21,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:12:21,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:12:21,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:12:21,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:12:21,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:12:21,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:12:21,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:12:21,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:12:21,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:12:21,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:12:21,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:12:21,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:12:21,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:12:21,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:12:21,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:12:21,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:12:21,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:12:21,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:12:21,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:12:21,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:12:21,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:12:21,947 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:12:21,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:12:21,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:12:21,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:12:21,949 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_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c973e7f310a848892a18e3f534717b85b3f4d9e6c87fd06bd7bcf01c28300fa4 [2021-10-28 23:12:22,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:12:22,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:12:22,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:12:22,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:12:22,370 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:12:22,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2021-10-28 23:12:22,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/data/161c2a451/ed3bb19b06504bc7b2a7552f5784223b/FLAGddfc8745d [2021-10-28 23:12:23,112 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:12:23,113 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2021-10-28 23:12:23,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/data/161c2a451/ed3bb19b06504bc7b2a7552f5784223b/FLAGddfc8745d [2021-10-28 23:12:23,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/data/161c2a451/ed3bb19b06504bc7b2a7552f5784223b [2021-10-28 23:12:23,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:12:23,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:12:23,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:12:23,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:12:23,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:12:23,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4840e923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23, skipping insertion in model container [2021-10-28 23:12:23,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:12:23,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:12:23,722 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/sv-benchmarks/c/loop-acceleration/phases_2-2.c[459,472] [2021-10-28 23:12:23,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:12:23,746 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:12:23,759 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/sv-benchmarks/c/loop-acceleration/phases_2-2.c[459,472] [2021-10-28 23:12:23,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:12:23,781 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:12:23,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23 WrapperNode [2021-10-28 23:12:23,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:12:23,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:12:23,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:12:23,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:12:23,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:12:23,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:12:23,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:12:23,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:12:23,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:12:23,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:12:23,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:12:23,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:12:23,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (1/1) ... [2021-10-28 23:12:23,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:12:23,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:23,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:23,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:12:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:12:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:12:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:12:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:12:24,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:12:24,309 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:12:24,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:24 BoogieIcfgContainer [2021-10-28 23:12:24,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:12:24,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:12:24,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:12:24,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:12:24,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:12:23" (1/3) ... [2021-10-28 23:12:24,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce870d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:12:24, skipping insertion in model container [2021-10-28 23:12:24,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:23" (2/3) ... [2021-10-28 23:12:24,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce870d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:12:24, skipping insertion in model container [2021-10-28 23:12:24,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:24" (3/3) ... [2021-10-28 23:12:24,323 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2021-10-28 23:12:24,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:12:24,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:12:24,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:12:24,404 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:12:24,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:12:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:12:24,429 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:24,430 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:24,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:12:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1807274184, now seen corresponding path program 1 times [2021-10-28 23:12:24,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:24,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097201389] [2021-10-28 23:12:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:24,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:24,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:12:24,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097201389] [2021-10-28 23:12:24,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097201389] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:24,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:24,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:12:24,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666082478] [2021-10-28 23:12:24,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:12:24,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:12:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:12:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:12:24,688 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:24,707 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-10-28 23:12:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:12:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:12:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:24,719 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:12:24,721 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 23:12:24,724 INFO L786 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 [2021-10-28 23:12:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 23:12:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:12:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-28 23:12:24,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-10-28 23:12:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:24,812 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 23:12:24,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-28 23:12:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:12:24,821 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:24,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:24,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:12:24,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:12:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1806976274, now seen corresponding path program 1 times [2021-10-28 23:12:24,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:24,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818725409] [2021-10-28 23:12:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:24,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:25,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:12:25,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818725409] [2021-10-28 23:12:25,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818725409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:25,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:25,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:12:25,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666260030] [2021-10-28 23:12:25,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:12:25,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:12:25,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:12:25,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:12:25,262 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:25,394 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-28 23:12:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:12:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:12:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:25,396 INFO L225 Difference]: With dead ends: 15 [2021-10-28 23:12:25,396 INFO L226 Difference]: Without dead ends: 11 [2021-10-28 23:12:25,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:12:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-28 23:12:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 23:12:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-28 23:12:25,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2021-10-28 23:12:25,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:25,403 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-28 23:12:25,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-28 23:12:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:12:25,404 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:25,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:25,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:12:25,406 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:12:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1389601687, now seen corresponding path program 1 times [2021-10-28 23:12:25,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:25,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954978427] [2021-10-28 23:12:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:25,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:25,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:12:25,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259955607] [2021-10-28 23:12:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:25,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:12:25,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:25,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:12:25,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:12:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:25,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:12:25,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:25,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:12:25,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954978427] [2021-10-28 23:12:25,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:12:25,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259955607] [2021-10-28 23:12:25,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259955607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:12:25,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:12:25,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 23:12:25,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709293992] [2021-10-28 23:12:25,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:12:26,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:12:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:12:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:12:26,008 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:26,054 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-10-28 23:12:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:12:26,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 23:12:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:26,056 INFO L225 Difference]: With dead ends: 12 [2021-10-28 23:12:26,056 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:12:26,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:12:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:12:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:12:26,058 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) [2021-10-28 23:12:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:12:26,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-28 23:12:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:26,061 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:12:26,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:12:26,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:12:26,068 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:12:26,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 23:12:26,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-28 23:12:26,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:12:26,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:12:26,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:12:26,314 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:12:26,314 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-28 23:12:26,315 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 29) no Hoare annotation was computed. [2021-10-28 23:12:26,315 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-28 23:12:26,315 INFO L860 garLoopResultBuilder]: At program point L11-2(lines 1 32) the Hoare annotation is: true [2021-10-28 23:12:26,315 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:12:26,315 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:12:26,316 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:12:26,316 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 28) no Hoare annotation was computed. [2021-10-28 23:12:26,316 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-28 23:12:26,316 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 23 29) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 1) (< (+ ULTIMATE.start_main_~x~0 (* 4294967296 (div ULTIMATE.start_main_~y~0 4294967296))) (+ ULTIMATE.start_main_~y~0 (* 4294967296 (div ULTIMATE.start_main_~x~0 4294967296)) 1))) [2021-10-28 23:12:26,316 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-28 23:12:26,320 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 23:12:26,322 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:12:26,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:12:26 BoogieIcfgContainer [2021-10-28 23:12:26,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:12:26,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:12:26,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:12:26,341 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:12:26,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:24" (3/4) ... [2021-10-28 23:12:26,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:12:26,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 23:12:26,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:12:26,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:12:26,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:12:26,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:12:26,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:12:26,402 INFO L168 Benchmark]: Toolchain (without parser) took 2936.14 ms. Allocated memory is still 115.3 MB. Free memory was 81.0 MB in the beginning and 79.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:26,402 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:26,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.72 ms. Allocated memory is still 115.3 MB. Free memory was 80.6 MB in the beginning and 92.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:26,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.52 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 90.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:26,405 INFO L168 Benchmark]: Boogie Preprocessor took 55.10 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 89.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:26,405 INFO L168 Benchmark]: RCFGBuilder took 420.27 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 80.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:26,406 INFO L168 Benchmark]: TraceAbstraction took 2025.73 ms. Allocated memory is still 115.3 MB. Free memory was 79.9 MB in the beginning and 81.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 383.9 kB. Max. memory is 16.1 GB. [2021-10-28 23:12:26,407 INFO L168 Benchmark]: Witness Printer took 59.49 ms. Allocated memory is still 115.3 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:26,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.72 ms. Allocated memory is still 115.3 MB. Free memory was 80.6 MB in the beginning and 92.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.52 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 90.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.10 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 89.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 420.27 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 80.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2025.73 ms. Allocated memory is still 115.3 MB. Free memory was 79.9 MB in the beginning and 81.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 383.9 kB. Max. memory is 16.1 GB. * Witness Printer took 59.49 ms. Allocated memory is still 115.3 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 8 SDslu, 13 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 3 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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: 23]: Loop Invariant Derived loop invariant: x == 1 && x + 4294967296 * (y / 4294967296) < y + 4294967296 * (x / 4294967296) + 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:12:26,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53b2e33-2edb-43f8-a221-67012f22eb18/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...