./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr.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_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/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_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/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_50273ccb-590a-411e-8df7-6fba0a06ef9b/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 94a3c9718d8b0819c3a22a45f77fd4dac96406e3aa7eff964888695d6121efac ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:47:51,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:47:51,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:47:51,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:47:51,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:47:51,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:47:51,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:47:51,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:47:51,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:47:51,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:47:51,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:47:51,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:47:51,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:47:51,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:47:51,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:47:51,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:47:51,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:47:51,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:47:51,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:47:51,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:47:51,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:47:51,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:47:51,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:47:51,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:47:51,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:47:51,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:47:51,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:47:51,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:47:51,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:47:51,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:47:51,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:47:51,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:47:51,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:47:51,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:47:51,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:47:51,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:47:51,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:47:51,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:47:51,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:47:51,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:47:51,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:47:51,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:47:51,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:47:51,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:47:51,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:47:51,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:47:51,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:47:51,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:47:51,975 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:47:51,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:47:51,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:47:51,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:47:51,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:47:51,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:47:51,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:47:51,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:47:51,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:47:51,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:47:51,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:47:51,978 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:47:51,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:47:51,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:47:51,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:47:51,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:47:51,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:51,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:47:51,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:47:51,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:47:51,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:47:51,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:47:51,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:47:51,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:47:51,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:47:51,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:47:51,981 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_50273ccb-590a-411e-8df7-6fba0a06ef9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94a3c9718d8b0819c3a22a45f77fd4dac96406e3aa7eff964888695d6121efac [2021-10-28 23:47:52,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:47:52,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:47:52,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:47:52,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:47:52,309 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:47:52,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c [2021-10-28 23:47:52,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/data/fe28fea01/1cab1313d0714db59243a44551c25c46/FLAGf1189353f [2021-10-28 23:47:52,871 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:47:52,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c [2021-10-28 23:47:52,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/data/fe28fea01/1cab1313d0714db59243a44551c25c46/FLAGf1189353f [2021-10-28 23:47:53,235 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/data/fe28fea01/1cab1313d0714db59243a44551c25c46 [2021-10-28 23:47:53,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:47:53,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:47:53,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:53,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:47:53,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:47:53,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b75a01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53, skipping insertion in model container [2021-10-28 23:47:53,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:47:53,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:47:53,424 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_50273ccb-590a-411e-8df7-6fba0a06ef9b/sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c[414,427] [2021-10-28 23:47:53,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:53,456 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:47:53,467 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_50273ccb-590a-411e-8df7-6fba0a06ef9b/sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c[414,427] [2021-10-28 23:47:53,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:53,486 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:47:53,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53 WrapperNode [2021-10-28 23:47:53,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:53,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:47:53,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:47:53,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:47:53,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:47:53,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:47:53,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:47:53,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:47:53,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:47:53,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:47:53,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:47:53,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:47:53,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (1/1) ... [2021-10-28 23:47:53,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:53,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:47:53,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:47:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:47:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:47:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:47:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:47:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:47:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:47:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:47:53,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:47:53,953 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-28 23:47:53,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:53 BoogieIcfgContainer [2021-10-28 23:47:53,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:47:53,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:47:53,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:47:53,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:47:53,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:47:53" (1/3) ... [2021-10-28 23:47:53,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dadac4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:53, skipping insertion in model container [2021-10-28 23:47:53,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:53" (2/3) ... [2021-10-28 23:47:53,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dadac4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:53, skipping insertion in model container [2021-10-28 23:47:53,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:53" (3/3) ... [2021-10-28 23:47:53,965 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr.c [2021-10-28 23:47:53,971 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:47:53,971 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:47:54,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:47:54,032 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 23:47:54,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:47:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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 23:47:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:47:54,072 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:54,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:54,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:54,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:54,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1143788744, now seen corresponding path program 1 times [2021-10-28 23:47:54,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:54,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440478588] [2021-10-28 23:47:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:54,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:54,342 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 23:47:54,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:54,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440478588] [2021-10-28 23:47:54,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440478588] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:54,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:54,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:47:54,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174363027] [2021-10-28 23:47:54,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:47:54,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:47:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:47:54,393 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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 4.5) internal successors, (9), 2 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 23:47:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:54,417 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-10-28 23:47:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:47:54,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 23:47:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:54,429 INFO L225 Difference]: With dead ends: 38 [2021-10-28 23:47:54,429 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 23:47:54,433 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 23:47:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 23:47:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-28 23:47:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-28 23:47:54,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2021-10-28 23:47:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:54,473 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-28 23:47:54,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 23:47:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-28 23:47:54,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:47:54,476 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:54,476 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:54,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:47:54,478 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:54,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1809365643, now seen corresponding path program 1 times [2021-10-28 23:47:54,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:54,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666452881] [2021-10-28 23:47:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:54,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:54,641 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 23:47:54,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:54,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666452881] [2021-10-28 23:47:54,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666452881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:54,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:54,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:47:54,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080431584] [2021-10-28 23:47:54,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:47:54,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:47:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:47:54,646 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 23:47:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:54,693 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-10-28 23:47:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:47:54,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 23:47:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:54,694 INFO L225 Difference]: With dead ends: 32 [2021-10-28 23:47:54,694 INFO L226 Difference]: Without dead ends: 22 [2021-10-28 23:47:54,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:47:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-28 23:47:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-10-28 23:47:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-28 23:47:54,701 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2021-10-28 23:47:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:54,701 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-28 23:47:54,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 23:47:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-28 23:47:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:47:54,702 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:54,702 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:54,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:47:54,703 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 129067660, now seen corresponding path program 1 times [2021-10-28 23:47:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:54,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219385910] [2021-10-28 23:47:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:54,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:47:54,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:54,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219385910] [2021-10-28 23:47:54,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219385910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:54,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241312658] [2021-10-28 23:47:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:54,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:54,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:54,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:47:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:54,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:47:54,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:47:55,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241312658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:55,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:47:55,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-28 23:47:55,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399587480] [2021-10-28 23:47:55,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:47:55,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:55,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:47:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:47:55,155 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:55,238 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-10-28 23:47:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:47:55,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 23:47:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:55,241 INFO L225 Difference]: With dead ends: 45 [2021-10-28 23:47:55,241 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 23:47:55,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:47:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 23:47:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2021-10-28 23:47:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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 23:47:55,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-28 23:47:55,252 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2021-10-28 23:47:55,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:55,253 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-28 23:47:55,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:55,253 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-10-28 23:47:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:47:55,256 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:55,257 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:55,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:55,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:55,471 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:55,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:55,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1216964829, now seen corresponding path program 2 times [2021-10-28 23:47:55,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:55,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223528348] [2021-10-28 23:47:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:55,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:47:55,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:55,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223528348] [2021-10-28 23:47:55,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223528348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:55,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108590954] [2021-10-28 23:47:55,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:47:55,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:55,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:55,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:55,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:47:55,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:47:55,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:47:55,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:47:55,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:47:55,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108590954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:55,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:47:55,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 23:47:55,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013375925] [2021-10-28 23:47:55,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:47:55,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:47:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:47:55,775 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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 23:47:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:55,895 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-28 23:47:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:47:55,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 23:47:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:55,899 INFO L225 Difference]: With dead ends: 59 [2021-10-28 23:47:55,899 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 23:47:55,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:47:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 23:47:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2021-10-28 23:47:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 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 23:47:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-28 23:47:55,924 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2021-10-28 23:47:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:55,925 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-28 23:47:55,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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 23:47:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-10-28 23:47:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:47:55,928 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:55,928 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:55,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:56,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:56,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash -655819974, now seen corresponding path program 3 times [2021-10-28 23:47:56,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:56,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878440559] [2021-10-28 23:47:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:56,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 23:47:56,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:56,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878440559] [2021-10-28 23:47:56,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878440559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:56,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911566921] [2021-10-28 23:47:56,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:47:56,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:56,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:56,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:56,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:47:56,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 23:47:56,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:47:56,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:47:56,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:47:56,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911566921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:56,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:47:56,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-28 23:47:56,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272428594] [2021-10-28 23:47:56,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:47:56,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:47:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:47:56,629 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:56,755 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-10-28 23:47:56,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:47:56,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 23:47:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:56,759 INFO L225 Difference]: With dead ends: 73 [2021-10-28 23:47:56,766 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 23:47:56,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:47:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 23:47:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 36. [2021-10-28 23:47:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-10-28 23:47:56,774 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 27 [2021-10-28 23:47:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:56,775 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-10-28 23:47:56,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-10-28 23:47:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:47:56,776 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:56,776 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:56,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:56,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:56,992 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:56,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1998403887, now seen corresponding path program 4 times [2021-10-28 23:47:56,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:56,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153597160] [2021-10-28 23:47:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:56,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 23:47:57,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:57,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153597160] [2021-10-28 23:47:57,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153597160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:57,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321306125] [2021-10-28 23:47:57,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:47:57,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:57,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:57,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:57,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:47:57,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:47:57,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:47:57,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 23:47:57,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:57,280 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 23:47:57,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 23:47:57,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2021-10-28 23:47:57,647 INFO L354 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2021-10-28 23:47:57,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 47 [2021-10-28 23:47:58,022 INFO L354 Elim1Store]: treesize reduction 162, result has 20.2 percent of original size [2021-10-28 23:47:58,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 82 [2021-10-28 23:48:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 23:48:00,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321306125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:48:00,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:48:00,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-28 23:48:00,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786272584] [2021-10-28 23:48:00,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:48:00,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:48:00,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:48:00,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-10-28 23:48:00,382 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:48:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:03,128 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-28 23:48:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:48:03,131 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 23:48:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:03,132 INFO L225 Difference]: With dead ends: 44 [2021-10-28 23:48:03,132 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:48:03,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=138, Invalid=511, Unknown=1, NotChecked=0, Total=650 [2021-10-28 23:48:03,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:48:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:48:03,133 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 23:48:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:48:03,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-10-28 23:48:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:03,134 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:48:03,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:48:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:48:03,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:48:03,136 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:48:03,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:03,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 23:48:03,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:48:03,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:48:03,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:48:03,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:48:03,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:48:04,377 INFO L860 garLoopResultBuilder]: At program point L31(lines 11 32) the Hoare annotation is: true [2021-10-28 23:48:04,377 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:48:04,377 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:48:04,377 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:48:04,378 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-10-28 23:48:04,378 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-28 23:48:04,378 INFO L857 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-10-28 23:48:04,378 INFO L857 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2021-10-28 23:48:04,378 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:48:04,378 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 30) no Hoare annotation was computed. [2021-10-28 23:48:04,379 INFO L853 garLoopResultBuilder]: At program point L29-3(lines 29 30) the Hoare annotation is: false [2021-10-28 23:48:04,379 INFO L857 garLoopResultBuilder]: For program point L29-4(lines 29 30) no Hoare annotation was computed. [2021-10-28 23:48:04,379 INFO L857 garLoopResultBuilder]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2021-10-28 23:48:04,379 INFO L853 garLoopResultBuilder]: At program point L25-3(lines 25 27) the Hoare annotation is: false [2021-10-28 23:48:04,379 INFO L857 garLoopResultBuilder]: For program point L25-4(lines 25 27) no Hoare annotation was computed. [2021-10-28 23:48:04,379 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 7) no Hoare annotation was computed. [2021-10-28 23:48:04,379 INFO L857 garLoopResultBuilder]: For program point L18-2(lines 18 23) no Hoare annotation was computed. [2021-10-28 23:48:04,380 INFO L853 garLoopResultBuilder]: At program point L18-3(lines 18 23) the Hoare annotation is: (let ((.cse0 (exists ((v_ULTIMATE.start_main_~i~0_29 Int)) (and (= 0 (let ((.cse10 (* v_ULTIMATE.start_main_~i~0_29 4))) (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ .cse10 |ULTIMATE.start_main_~#a~0.offset|)) (select (select |#memory_int| |ULTIMATE.start_main_~#b~0.base|) (+ |ULTIMATE.start_main_~#b~0.offset| .cse10))))) (<= 2 v_ULTIMATE.start_main_~i~0_29) (<= (+ v_ULTIMATE.start_main_~i~0_29 1) ULTIMATE.start_main_~i~0)))) (.cse5 (= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#b~0.base|) (+ |ULTIMATE.start_main_~#b~0.offset| 4)) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 4))) 0)) (.cse1 (not (= |ULTIMATE.start_main_~#a~0.base| |ULTIMATE.start_main_~#b~0.base|))) (.cse2 (not (= |ULTIMATE.start_main_~#b~0.base| |ULTIMATE.start_main_~#c~0.base|))) (.cse3 (<= 100000 ~N~0)) (.cse4 (not (= |ULTIMATE.start_main_~#a~0.base| |ULTIMATE.start_main_~#c~0.base|)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= ULTIMATE.start_main_~i~0 3)) (and .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~i~0 1) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (exists ((v_ULTIMATE.start_main_~i~0_29 Int) (ULTIMATE.start_main_~i~0 Int)) (let ((.cse8 (select |#memory_int| |ULTIMATE.start_main_~#b~0.base|)) (.cse6 (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|))) (and (= 0 (let ((.cse7 (* v_ULTIMATE.start_main_~i~0_29 4))) (+ (select .cse6 (+ .cse7 |ULTIMATE.start_main_~#a~0.offset|)) (select .cse8 (+ |ULTIMATE.start_main_~#b~0.offset| .cse7))))) (<= 2 v_ULTIMATE.start_main_~i~0_29) (= (let ((.cse9 (* ULTIMATE.start_main_~i~0 4))) (+ (select .cse8 (+ |ULTIMATE.start_main_~#b~0.offset| .cse9)) (select .cse6 (+ |ULTIMATE.start_main_~#a~0.offset| .cse9)))) 0) (<= (+ v_ULTIMATE.start_main_~i~0_29 1) ULTIMATE.start_main_~i~0))))) (and .cse1 (<= 2 ULTIMATE.start_main_~i~0) .cse2 (<= ULTIMATE.start_main_~i~0 2) .cse4 .cse5 (<= (+ 99998 ULTIMATE.start_main_~i~0) ~N~0)) (and .cse1 .cse2 (= ULTIMATE.start_main_~i~0 0) .cse3 .cse4))) [2021-10-28 23:48:04,380 INFO L857 garLoopResultBuilder]: For program point L18-4(lines 18 23) no Hoare annotation was computed. [2021-10-28 23:48:04,380 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-10-28 23:48:04,384 INFO L731 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2021-10-28 23:48:04,385 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:48:04,398 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,399 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,402 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,403 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,403 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,403 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,404 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,404 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,405 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,434 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,434 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,434 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,435 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,437 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:48:04 BoogieIcfgContainer [2021-10-28 23:48:04,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:48:04,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:48:04,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:48:04,444 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:48:04,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:53" (3/4) ... [2021-10-28 23:48:04,448 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:48:04,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-28 23:48:04,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:48:04,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:48:04,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:48:04,486 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && i <= 3) || ((((!(a == b) && !(b == c)) && 100000 <= N) && i == 1) && !(a == c))) || (((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && (\exists v_ULTIMATE.start_main_~i~0_29 : int, ULTIMATE.start_main_~i~0 : int :: ((0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && unknown-#memory_int-unknown[b][b + ULTIMATE.start_main_~i~0 * 4] + unknown-#memory_int-unknown[a][a + ULTIMATE.start_main_~i~0 * 4] == 0) && v_ULTIMATE.start_main_~i~0_29 + 1 <= ULTIMATE.start_main_~i~0))) || ((((((!(a == b) && 2 <= i) && !(b == c)) && i <= 2) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && 99998 + i <= N)) || ((((!(a == b) && !(b == c)) && i == 0) && 100000 <= N) && !(a == c)) [2021-10-28 23:48:04,507 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:48:04,507 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:48:04,509 INFO L168 Benchmark]: Toolchain (without parser) took 11269.30 ms. Allocated memory was 81.8 MB in the beginning and 123.7 MB in the end (delta: 41.9 MB). Free memory was 46.1 MB in the beginning and 70.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:04,509 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 35.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:04,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.64 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.9 MB in the beginning and 75.6 MB in the end (delta: -29.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:04,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.11 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 73.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:04,511 INFO L168 Benchmark]: Boogie Preprocessor took 29.43 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:04,512 INFO L168 Benchmark]: RCFGBuilder took 399.43 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 62.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:04,512 INFO L168 Benchmark]: TraceAbstraction took 10485.91 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 61.5 MB in the beginning and 74.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:04,513 INFO L168 Benchmark]: Witness Printer took 64.31 ms. Allocated memory is still 123.7 MB. Free memory was 74.1 MB in the beginning and 70.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:04,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 35.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.64 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.9 MB in the beginning and 75.6 MB in the end (delta: -29.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.11 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 73.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.43 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 399.43 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 62.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10485.91 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 61.5 MB in the beginning and 74.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Witness Printer took 64.31 ms. Allocated memory is still 123.7 MB. Free memory was 74.1 MB in the beginning and 70.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] * 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: 8]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 224 SDslu, 104 SDs, 0 SdLazy, 269 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 52 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 266 HoareAnnotationTreeSize, 4 FomulaSimplifications, 121 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 210 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 200 ConstructedInterpolants, 6 QuantifiedInterpolants, 1297 SizeOfPredicates, 10 NumberOfNonLiveVariables, 387 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 69/160 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: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant [2021-10-28 23:48:04,536 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,536 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,536 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,536 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,536 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,537 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,537 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,537 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,538 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,538 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,538 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,538 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,539 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,539 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,539 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,541 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,542 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,542 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,542 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,543 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,543 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,543 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,543 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,544 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,544 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,544 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-10-28 23:48:04,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-10-28 23:48:04,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] Derived loop invariant: ((((((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && i <= 3) || ((((!(a == b) && !(b == c)) && 100000 <= N) && i == 1) && !(a == c))) || (((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && (\exists v_ULTIMATE.start_main_~i~0_29 : int, ULTIMATE.start_main_~i~0 : int :: ((0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && unknown-#memory_int-unknown[b][b + ULTIMATE.start_main_~i~0 * 4] + unknown-#memory_int-unknown[a][a + ULTIMATE.start_main_~i~0 * 4] == 0) && v_ULTIMATE.start_main_~i~0_29 + 1 <= ULTIMATE.start_main_~i~0))) || ((((((!(a == b) && 2 <= i) && !(b == c)) && i <= 2) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && 99998 + i <= N)) || ((((!(a == b) && !(b == c)) && i == 0) && 100000 <= N) && !(a == c)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:48:04,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50273ccb-590a-411e-8df7-6fba0a06ef9b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...