./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b63b7ff6572e9a0a2b1c55134bda19bbc388077099b845df6f31e10a08695ebb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:43:20,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:43:20,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:43:20,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:43:20,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:43:20,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:43:20,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:43:20,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:43:20,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:43:20,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:43:20,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:43:20,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:43:20,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:43:20,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:43:20,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:43:20,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:43:20,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:43:20,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:43:20,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:43:20,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:43:20,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:43:20,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:43:20,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:43:20,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:43:20,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:43:20,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:43:20,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:43:20,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:43:20,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:43:20,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:43:20,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:43:20,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:43:20,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:43:20,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:43:20,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:43:20,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:43:20,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:43:20,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:43:20,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:43:20,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:43:20,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:43:20,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:43:20,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:43:20,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:43:20,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:43:20,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:43:20,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:43:20,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:43:20,303 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:43:20,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:43:20,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:43:20,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:43:20,304 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:43:20,305 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:43:20,305 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:43:20,305 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:43:20,306 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:43:20,306 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:43:20,306 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:43:20,306 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:43:20,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:43:20,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:43:20,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:43:20,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:43:20,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:43:20,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:43:20,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:43:20,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:43:20,310 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:43:20,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:43:20,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:43:20,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:43:20,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:43:20,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:43:20,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:20,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:43:20,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:43:20,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:43:20,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:43:20,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:43:20,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:43:20,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:43:20,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:43:20,314 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63b7ff6572e9a0a2b1c55134bda19bbc388077099b845df6f31e10a08695ebb [2021-11-23 02:43:20,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:43:20,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:43:20,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:43:20,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:43:20,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:43:20,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c [2021-11-23 02:43:20,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/data/4b31f0fba/f84df79381ba47f395f90e61b3bb82eb/FLAGbac86646b [2021-11-23 02:43:21,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:43:21,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c [2021-11-23 02:43:21,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/data/4b31f0fba/f84df79381ba47f395f90e61b3bb82eb/FLAGbac86646b [2021-11-23 02:43:21,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/data/4b31f0fba/f84df79381ba47f395f90e61b3bb82eb [2021-11-23 02:43:21,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:43:21,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:43:21,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:21,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:43:21,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:43:21,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4849e9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21, skipping insertion in model container [2021-11-23 02:43:21,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:43:21,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:43:21,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c[555,568] [2021-11-23 02:43:21,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:21,747 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:43:21,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c[555,568] [2021-11-23 02:43:21,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:21,775 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:43:21,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21 WrapperNode [2021-11-23 02:43:21,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:21,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:21,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:43:21,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:43:21,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,807 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2021-11-23 02:43:21,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:21,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:43:21,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:43:21,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:43:21,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:43:21,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:43:21,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:43:21,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:43:21,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2021-11-23 02:43:21,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:21,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:21,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:43:21,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:43:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:43:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:43:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:43:21,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:43:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:43:21,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:43:21,984 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:43:21,986 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:43:22,116 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:43:22,129 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:43:22,129 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:43:22,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:22 BoogieIcfgContainer [2021-11-23 02:43:22,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:43:22,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:43:22,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:43:22,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:43:22,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:43:21" (1/3) ... [2021-11-23 02:43:22,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cd4ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:22, skipping insertion in model container [2021-11-23 02:43:22,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (2/3) ... [2021-11-23 02:43:22,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cd4ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:22, skipping insertion in model container [2021-11-23 02:43:22,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:22" (3/3) ... [2021-11-23 02:43:22,142 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound20.c [2021-11-23 02:43:22,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:43:22,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:43:22,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:43:22,209 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=FINITE_AUTOMATA, 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 [2021-11-23 02:43:22,209 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:43:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:43:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:43:22,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:22,233 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1844912769, now seen corresponding path program 1 times [2021-11-23 02:43:22,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213869469] [2021-11-23 02:43:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:22,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:22,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213869469] [2021-11-23 02:43:22,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213869469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:22,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:22,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:43:22,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876246845] [2021-11-23 02:43:22,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:22,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:43:22,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:43:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:43:22,462 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:22,510 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-23 02:43:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:43:22,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:43:22,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:22,522 INFO L225 Difference]: With dead ends: 29 [2021-11-23 02:43:22,522 INFO L226 Difference]: Without dead ends: 13 [2021-11-23 02:43:22,526 INFO L932 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 [2021-11-23 02:43:22,538 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:22,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:43:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-23 02:43:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-23 02:43:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:43:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-23 02:43:22,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-11-23 02:43:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:22,595 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-23 02:43:22,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-23 02:43:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:43:22,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:22,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:43:22,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1463439014, now seen corresponding path program 1 times [2021-11-23 02:43:22,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:22,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968363074] [2021-11-23 02:43:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:22,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:43:22,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907948450] [2021-11-23 02:43:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:22,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:22,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:22,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:43:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:22,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:43:22,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:22,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:43:22,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968363074] [2021-11-23 02:43:22,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:43:22,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907948450] [2021-11-23 02:43:22,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907948450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:22,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:22,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:43:22,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513236476] [2021-11-23 02:43:22,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:22,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:43:22,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:22,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:43:22,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:22,874 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:22,953 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-11-23 02:43:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:43:22,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:43:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:22,957 INFO L225 Difference]: With dead ends: 24 [2021-11-23 02:43:22,957 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 02:43:22,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:43:22,960 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:22,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 02:43:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-11-23 02:43:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:43:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-23 02:43:22,975 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 7 [2021-11-23 02:43:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:22,976 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-23 02:43:22,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-23 02:43:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:43:22,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:23,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:23,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:23,198 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1950604610, now seen corresponding path program 1 times [2021-11-23 02:43:23,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:23,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60261016] [2021-11-23 02:43:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:23,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:23,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:23,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60261016] [2021-11-23 02:43:23,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60261016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:23,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:23,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:23,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656293316] [2021-11-23 02:43:23,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:23,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:23,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:23,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:23,296 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:23,329 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-11-23 02:43:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:43:23,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 02:43:23,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:23,333 INFO L225 Difference]: With dead ends: 28 [2021-11-23 02:43:23,333 INFO L226 Difference]: Without dead ends: 20 [2021-11-23 02:43:23,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:23,335 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:23,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:43:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-23 02:43:23,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-23 02:43:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:43:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-23 02:43:23,342 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2021-11-23 02:43:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:23,342 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-23 02:43:23,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-23 02:43:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:43:23,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:23,347 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:23,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:43:23,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash 947976029, now seen corresponding path program 1 times [2021-11-23 02:43:23,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:23,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245178426] [2021-11-23 02:43:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:23,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:23,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:43:23,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990435170] [2021-11-23 02:43:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:23,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:23,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:23,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:23,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:43:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:43:23,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:43:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:43:23,467 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:43:23,468 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:43:23,469 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:43:23,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:23,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:23,698 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 02:43:23,702 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:43:23,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:43:23 BoogieIcfgContainer [2021-11-23 02:43:23,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:43:23,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:43:23,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:43:23,729 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:43:23,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:22" (3/4) ... [2021-11-23 02:43:23,731 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:43:23,768 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:43:23,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:43:23,770 INFO L158 Benchmark]: Toolchain (without parser) took 2236.64ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 57.3MB in the beginning and 80.0MB in the end (delta: -22.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-23 02:43:23,770 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 54.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:43:23,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.13ms. Allocated memory is still 96.5MB. Free memory was 57.1MB in the beginning and 67.2MB in the end (delta: -10.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:43:23,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.09ms. Allocated memory is still 96.5MB. Free memory was 67.2MB in the beginning and 65.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:43:23,771 INFO L158 Benchmark]: Boogie Preprocessor took 19.17ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 64.7MB in the end (delta: 950.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:43:23,772 INFO L158 Benchmark]: RCFGBuilder took 303.64ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 55.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:43:23,772 INFO L158 Benchmark]: TraceAbstraction took 1593.71ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 55.1MB in the beginning and 82.1MB in the end (delta: -27.0MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2021-11-23 02:43:23,773 INFO L158 Benchmark]: Witness Printer took 40.60ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:43:23,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 54.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.13ms. Allocated memory is still 96.5MB. Free memory was 57.1MB in the beginning and 67.2MB in the end (delta: -10.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.09ms. Allocated memory is still 96.5MB. Free memory was 67.2MB in the beginning and 65.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.17ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 64.7MB in the end (delta: 950.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 303.64ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 55.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1593.71ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 55.1MB in the beginning and 82.1MB in the end (delta: -27.0MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Witness Printer took 40.60ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [c=1, counter=0, x=1, y=0, z=0] [L33] EXPR counter++ VAL [c=1, counter=1, counter++=0, x=1, y=0, z=0] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, counter=1, x=1, y=0, z=0] [L36] COND TRUE !(c < k) VAL [c=1, counter=1, k=0, x=1, y=0, z=0] [L45] x = x * (z - 1) VAL [c=1, counter=1, k=0, x=4294967295, y=0, z=0] [L47] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0, counter=1] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 37 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 1 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 02:43:23,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a9e093-b8b8-4381-a490-d2207f0aaae3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE