./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound50.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_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/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_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/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_a76643a9-46b8-4fe0-ab15-e35202c6784c/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 0bb6ea6333d2c4e133ad252fe2bcbc17b832f383e2bb5defb402851de157204c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:24:10,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:24:10,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:24:10,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:24:10,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:24:10,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:24:10,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:24:10,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:24:10,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:24:10,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:24:10,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:24:10,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:24:10,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:24:10,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:24:10,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:24:10,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:24:10,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:24:10,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:24:10,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:24:10,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:24:11,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:24:11,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:24:11,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:24:11,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:24:11,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:24:11,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:24:11,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:24:11,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:24:11,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:24:11,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:24:11,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:24:11,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:24:11,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:24:11,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:24:11,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:24:11,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:24:11,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:24:11,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:24:11,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:24:11,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:24:11,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:24:11,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:24:11,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:24:11,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:24:11,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:24:11,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:24:11,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:24:11,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:24:11,079 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:24:11,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:24:11,079 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:24:11,079 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:24:11,080 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:24:11,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:24:11,081 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:24:11,081 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:24:11,081 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:24:11,081 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:24:11,082 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:24:11,082 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:24:11,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:24:11,083 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:24:11,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:24:11,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:24:11,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:24:11,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:24:11,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:24:11,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:24:11,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:24:11,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:24:11,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:24:11,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:24:11,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:24:11,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:24:11,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:24:11,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:24:11,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:24:11,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:24:11,088 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:24:11,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:24:11,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:24:11,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:24:11,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:24:11,088 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_a76643a9-46b8-4fe0-ab15-e35202c6784c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bb6ea6333d2c4e133ad252fe2bcbc17b832f383e2bb5defb402851de157204c [2021-11-23 03:24:11,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:24:11,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:24:11,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:24:11,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:24:11,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:24:11,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound50.c [2021-11-23 03:24:11,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/data/cf10bae2c/699605a19ea94ec8a266456f4eb121ed/FLAG53e078b86 [2021-11-23 03:24:12,043 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:24:12,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound50.c [2021-11-23 03:24:12,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/data/cf10bae2c/699605a19ea94ec8a266456f4eb121ed/FLAG53e078b86 [2021-11-23 03:24:12,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/data/cf10bae2c/699605a19ea94ec8a266456f4eb121ed [2021-11-23 03:24:12,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:24:12,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:24:12,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:24:12,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:24:12,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:24:12,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562bb46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12, skipping insertion in model container [2021-11-23 03:24:12,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:24:12,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:24:12,602 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_a76643a9-46b8-4fe0-ab15-e35202c6784c/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound50.c[597,610] [2021-11-23 03:24:12,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:24:12,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:24:12,673 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_a76643a9-46b8-4fe0-ab15-e35202c6784c/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound50.c[597,610] [2021-11-23 03:24:12,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:24:12,703 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:24:12,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12 WrapperNode [2021-11-23 03:24:12,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:24:12,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:24:12,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:24:12,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:24:12,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,755 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-11-23 03:24:12,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:24:12,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:24:12,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:24:12,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:24:12,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:24:12,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:24:12,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:24:12,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:24:12,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (1/1) ... [2021-11-23 03:24:12,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:24:12,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:24:12,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:24:12,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:24:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:24:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:24:12,986 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:24:12,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:24:13,164 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:24:13,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:24:13,211 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:24:13,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:13 BoogieIcfgContainer [2021-11-23 03:24:13,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:24:13,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:24:13,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:24:13,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:24:13,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:24:12" (1/3) ... [2021-11-23 03:24:13,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2511cf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:13, skipping insertion in model container [2021-11-23 03:24:13,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12" (2/3) ... [2021-11-23 03:24:13,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2511cf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:13, skipping insertion in model container [2021-11-23 03:24:13,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:13" (3/3) ... [2021-11-23 03:24:13,224 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound50.c [2021-11-23 03:24:13,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:24:13,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:24:13,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:24:13,330 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 03:24:13,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:24:13,350 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 03:24:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:24:13,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:13,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:13,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash -26250642, now seen corresponding path program 1 times [2021-11-23 03:24:13,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:13,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387645231] [2021-11-23 03:24:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:13,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:13,486 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:24:13,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340983678] [2021-11-23 03:24:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:13,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:24:13,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:24:13,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:24:13,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:24:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:13,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:24:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:13,941 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 03:24:13,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:24:13,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:13,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387645231] [2021-11-23 03:24:13,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:24:13,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340983678] [2021-11-23 03:24:13,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340983678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:13,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:13,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:24:13,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402444629] [2021-11-23 03:24:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:13,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:24:13,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:24:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:24:14,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:24:14,030 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 6 states, 5 states have (on average 1.2) internal successors, (6), 4 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 03:24:14,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:14,249 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2021-11-23 03:24:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:24:14,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 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 03:24:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:14,262 INFO L225 Difference]: With dead ends: 42 [2021-11-23 03:24:14,262 INFO L226 Difference]: Without dead ends: 21 [2021-11-23 03:24:14,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:24:14,271 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:14,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:24:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-23 03:24:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-23 03:24:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) 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), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:24:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-23 03:24:14,324 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2021-11-23 03:24:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:14,325 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-23 03:24:14,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 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 03:24:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-23 03:24:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:24:14,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:14,329 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:14,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:14,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 03:24:14,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1971909778, now seen corresponding path program 1 times [2021-11-23 03:24:14,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:14,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155328204] [2021-11-23 03:24:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:14,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:14,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:24:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802826142] [2021-11-23 03:24:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:14,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:24:14,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:24:14,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:24:14,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:24:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:14,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 03:24:14,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:15,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:15,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:15,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155328204] [2021-11-23 03:24:15,998 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:24:15,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802826142] [2021-11-23 03:24:16,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802826142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:24:16,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2124155131] [2021-11-23 03:24:16,032 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 03:24:16,033 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:24:16,038 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:24:16,045 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:24:16,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:24:17,372 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 45 for LOIs [2021-11-23 03:24:17,533 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:24:20,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '225#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (< ~counter~0 51) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:24:20,020 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:24:20,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:24:20,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-23 03:24:20,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539654022] [2021-11-23 03:24:20,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:24:20,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:24:20,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:24:20,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:24:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=252, Unknown=1, NotChecked=0, Total=306 [2021-11-23 03:24:20,025 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:24:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:20,728 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-11-23 03:24:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:24:20,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2021-11-23 03:24:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:20,731 INFO L225 Difference]: With dead ends: 35 [2021-11-23 03:24:20,731 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 03:24:20,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=79, Invalid=382, Unknown=1, NotChecked=0, Total=462 [2021-11-23 03:24:20,734 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:20,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 61 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:24:20,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 03:24:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-23 03:24:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:24:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-23 03:24:20,744 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2021-11-23 03:24:20,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:20,744 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-23 03:24:20,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:24:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-23 03:24:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:24:20,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:20,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:20,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:20,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:24:20,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash 927087193, now seen corresponding path program 1 times [2021-11-23 03:24:20,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:20,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763292648] [2021-11-23 03:24:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:20,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:20,973 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:24:20,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969145263] [2021-11-23 03:24:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:20,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:24:20,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:24:20,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:24:20,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:24:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:21,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:24:21,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:21,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:21,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:21,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763292648] [2021-11-23 03:24:21,164 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:24:21,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969145263] [2021-11-23 03:24:21,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969145263] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:24:21,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291625066] [2021-11-23 03:24:21,168 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 03:24:21,168 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:24:21,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:24:21,169 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:24:21,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:24:22,089 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 91 for LOIs [2021-11-23 03:24:22,783 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:24:32,184 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '416#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 03:24:32,184 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:24:32,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:24:32,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-11-23 03:24:32,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121629084] [2021-11-23 03:24:32,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:24:32,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:24:32,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:24:32,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:24:32,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=253, Unknown=1, NotChecked=0, Total=306 [2021-11-23 03:24:32,187 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:24:32,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:32,389 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-11-23 03:24:32,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:24:32,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-23 03:24:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:32,392 INFO L225 Difference]: With dead ends: 59 [2021-11-23 03:24:32,392 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 03:24:32,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=72, Invalid=347, Unknown=1, NotChecked=0, Total=420 [2021-11-23 03:24:32,395 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:32,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 74 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:24:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 03:24:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-11-23 03:24:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:24:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-11-23 03:24:32,408 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 16 [2021-11-23 03:24:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:32,409 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-11-23 03:24:32,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:24:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-11-23 03:24:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:24:32,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:32,411 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:32,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:32,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:24:32,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1587911935, now seen corresponding path program 1 times [2021-11-23 03:24:32,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:32,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200781162] [2021-11-23 03:24:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:32,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:32,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:24:32,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4278922] [2021-11-23 03:24:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:32,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:24:32,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:24:32,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:24:32,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:24:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:32,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:24:32,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:24:33,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:24:34,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:34,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200781162] [2021-11-23 03:24:34,452 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:24:34,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4278922] [2021-11-23 03:24:34,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4278922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:24:34,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2110108091] [2021-11-23 03:24:34,455 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 03:24:34,456 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:24:34,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:24:34,457 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:24:34,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:24:35,360 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 92 for LOIs [2021-11-23 03:24:36,105 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:24:56,492 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '712#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (< ~counter~0 51) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:24:56,492 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:24:56,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:24:56,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-11-23 03:24:56,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155616937] [2021-11-23 03:24:56,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:24:56,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 03:24:56,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:24:56,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 03:24:56,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=649, Unknown=7, NotChecked=0, Total=756 [2021-11-23 03:24:56,495 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 18 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:24:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:58,356 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-11-23 03:24:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:24:58,357 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2021-11-23 03:24:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:58,359 INFO L225 Difference]: With dead ends: 49 [2021-11-23 03:24:58,359 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 03:24:58,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=185, Invalid=1140, Unknown=7, NotChecked=0, Total=1332 [2021-11-23 03:24:58,362 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:58,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 63 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:24:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 03:24:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-23 03:24:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:24:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-11-23 03:24:58,376 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2021-11-23 03:24:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:58,376 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-11-23 03:24:58,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:24:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-11-23 03:24:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:24:58,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:58,379 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:58,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:58,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 03:24:58,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:24:58,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1355163283, now seen corresponding path program 2 times [2021-11-23 03:24:58,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:24:58,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436019687] [2021-11-23 03:24:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:58,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:24:58,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:24:58,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777403766] [2021-11-23 03:24:58,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:24:58,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:24:58,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:24:58,622 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:24:58,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:24:58,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 03:24:58,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:24:58,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:24:58,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:59,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:24:59,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:24:59,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436019687] [2021-11-23 03:24:59,725 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:24:59,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777403766] [2021-11-23 03:24:59,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777403766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:24:59,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1950578999] [2021-11-23 03:24:59,728 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 03:24:59,728 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:24:59,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:24:59,729 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:24:59,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:25:00,541 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 91 for LOIs [2021-11-23 03:25:01,188 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:25:09,530 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1111#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (exists ((|v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_40| Int) (|v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_40| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_38| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_39| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_40| Int)) (and (<= 0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_38|) (<= 0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_39|) (<= |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_40| 2147483647) (<= |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_40| 2147483647) (= (ite (= (+ (* 2 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_40| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_38|)) (* 2 |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_40|)) (+ |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_40| (* 2 (* |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_40| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_39|)) |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_40|)) 1 0) |__VERIFIER_assert_#in~cond|) (or (and (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (= |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_39| 0) (= |#NULL.offset| 0) (= |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_38| 1) (= ~counter~0 2) (= |#NULL.base| 0))) (<= 0 (+ |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_40| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_40| 2147483648)))) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 03:25:09,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:25:09,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:25:09,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-11-23 03:25:09,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650865771] [2021-11-23 03:25:09,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:25:09,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:25:09,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:25:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=448, Unknown=1, NotChecked=0, Total=552 [2021-11-23 03:25:09,534 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:25:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:10,484 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-11-23 03:25:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 03:25:10,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2021-11-23 03:25:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:10,487 INFO L225 Difference]: With dead ends: 95 [2021-11-23 03:25:10,487 INFO L226 Difference]: Without dead ends: 89 [2021-11-23 03:25:10,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=216, Invalid=839, Unknown=1, NotChecked=0, Total=1056 [2021-11-23 03:25:10,490 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 47 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:10,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 86 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:25:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-23 03:25:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-23 03:25:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 03:25:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-11-23 03:25:10,536 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 40 [2021-11-23 03:25:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:10,537 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-11-23 03:25:10,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:25:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-11-23 03:25:10,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 03:25:10,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:10,543 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-11-23 03:25:10,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:25:10,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:10,761 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1093149589, now seen corresponding path program 3 times [2021-11-23 03:25:10,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:10,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433879575] [2021-11-23 03:25:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:10,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:10,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:25:10,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271580984] [2021-11-23 03:25:10,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:25:10,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:10,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:25:10,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 03:25:11,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:25:11,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:25:11,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 03:25:11,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:25:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:25:12,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:25:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-23 03:25:13,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433879575] [2021-11-23 03:25:13,707 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:25:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271580984] [2021-11-23 03:25:13,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271580984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:25:13,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [45733402] [2021-11-23 03:25:13,711 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 03:25:13,711 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:25:13,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:25:13,712 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:25:13,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:25:14,508 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 91 for LOIs [2021-11-23 03:25:15,131 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:25:19,391 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1939#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_47| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_46| Int) (|v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_48| Int) (|v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_48| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_48| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_48| 2147483648)) (= (ite (= (+ (* 2 |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_48|) (* 2 (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_46| |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_48|))) (+ |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_48| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_48| (* 2 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_47| |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_48|)))) 1 0) |__VERIFIER_assert_#in~cond|) (<= 0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_46|) (or (and (= |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_46| 1) (= |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_47| 0) (= |#NULL.offset| 0) (= ~counter~0 2) (= |#NULL.base| 0)) (and (= |#NULL.offset| 0) (= |#NULL.base| 0))) (<= 0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_47|) (<= |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_48| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_48| 2147483648)) (<= |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_48| 2147483647))) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 03:25:19,391 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:25:19,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:25:19,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-11-23 03:25:19,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225297340] [2021-11-23 03:25:19,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:25:19,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 03:25:19,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 03:25:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=947, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 03:25:19,396 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 26 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 26 states have internal predecessors, (103), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 03:25:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:21,839 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2021-11-23 03:25:21,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-23 03:25:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 26 states have internal predecessors, (103), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2021-11-23 03:25:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:21,852 INFO L225 Difference]: With dead ends: 191 [2021-11-23 03:25:21,852 INFO L226 Difference]: Without dead ends: 185 [2021-11-23 03:25:21,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=828, Invalid=2364, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 03:25:21,856 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 182 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:21,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 152 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 03:25:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-23 03:25:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-11-23 03:25:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.0071942446043165) internal successors, (140), 139 states have internal predecessors, (140), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 03:25:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2021-11-23 03:25:21,899 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 88 [2021-11-23 03:25:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:21,900 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2021-11-23 03:25:21,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 26 states have internal predecessors, (103), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 03:25:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2021-11-23 03:25:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-23 03:25:21,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:21,907 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2021-11-23 03:25:21,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:25:22,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:22,120 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:22,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash 112256997, now seen corresponding path program 4 times [2021-11-23 03:25:22,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:22,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814960754] [2021-11-23 03:25:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:22,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:22,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:25:22,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253849247] [2021-11-23 03:25:22,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 03:25:22,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:22,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:22,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:25:22,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 03:25:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:22,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 03:25:22,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:25:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:25:25,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:25:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-11-23 03:25:29,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814960754] [2021-11-23 03:25:29,952 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:25:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253849247] [2021-11-23 03:25:29,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253849247] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:25:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1866685748] [2021-11-23 03:25:29,955 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 03:25:29,955 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:25:29,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:25:29,956 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:25:29,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:25:30,786 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 91 for LOIs [2021-11-23 03:25:31,398 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:25:36,782 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3655#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (exists ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_55| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_54| Int) (|v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_56| Int) (|v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_56| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_56| Int)) (and (<= |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_56| 2147483647) (<= 0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_55|) (<= 0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_54|) (= |__VERIFIER_assert_#in~cond| (ite (= (+ |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_56| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_56| (* 2 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_55| |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_56|))) (+ (* 2 (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_54| |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_56|)) (* 2 |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_56|))) 1 0)) (or (and (= |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_55| 0) (= |#NULL.offset| 0) (= ~counter~0 2) (= |#NULL.base| 0) (= |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_54| 1)) (and (= |#NULL.offset| 0) (= |#NULL.base| 0))) (<= 0 (+ |v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_56| 2147483648)) (<= |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_56| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_56| 2147483648)))) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 03:25:36,783 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:25:36,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:25:36,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2021-11-23 03:25:36,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654122231] [2021-11-23 03:25:36,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:25:36,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-23 03:25:36,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:36,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-23 03:25:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1165, Invalid=2375, Unknown=0, NotChecked=0, Total=3540 [2021-11-23 03:25:36,788 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand has 50 states, 50 states have (on average 4.22) internal successors, (211), 50 states have internal predecessors, (211), 45 states have call successors, (45), 24 states have call predecessors, (45), 23 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-23 03:25:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:44,283 INFO L93 Difference]: Finished difference Result 383 states and 406 transitions. [2021-11-23 03:25:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-23 03:25:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.22) internal successors, (211), 50 states have internal predecessors, (211), 45 states have call successors, (45), 24 states have call predecessors, (45), 23 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 184 [2021-11-23 03:25:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:44,289 INFO L225 Difference]: With dead ends: 383 [2021-11-23 03:25:44,289 INFO L226 Difference]: Without dead ends: 377 [2021-11-23 03:25:44,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2305 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=3348, Invalid=7572, Unknown=0, NotChecked=0, Total=10920 [2021-11-23 03:25:44,295 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 437 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:44,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 332 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:25:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-23 03:25:44,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-23 03:25:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 283 states have (on average 1.0035335689045937) internal successors, (284), 283 states have internal predecessors, (284), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-23 03:25:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2021-11-23 03:25:44,371 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 184 [2021-11-23 03:25:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:44,372 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2021-11-23 03:25:44,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.22) internal successors, (211), 50 states have internal predecessors, (211), 45 states have call successors, (45), 24 states have call predecessors, (45), 23 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-23 03:25:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2021-11-23 03:25:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-11-23 03:25:44,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:44,382 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2021-11-23 03:25:44,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:25:44,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:44,596 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 99823749, now seen corresponding path program 5 times [2021-11-23 03:25:44,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:44,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917332345] [2021-11-23 03:25:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:44,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:44,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:25:44,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077646957] [2021-11-23 03:25:44,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:25:44,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:44,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:44,629 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:25:44,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 03:26:03,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-23 03:26:03,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:26:03,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-23 03:26:03,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:26:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:26:11,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:26:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2021-11-23 03:26:14,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:14,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917332345] [2021-11-23 03:26:14,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:26:14,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077646957] [2021-11-23 03:26:14,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077646957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:26:14,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [274977662] [2021-11-23 03:26:14,513 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 03:26:14,514 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:26:14,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:26:14,514 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:26:14,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:26:15,177 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 91 for LOIs [2021-11-23 03:26:15,631 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:26:21,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7103#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 03:26:21,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:26:21,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:26:21,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 54 [2021-11-23 03:26:21,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585111153] [2021-11-23 03:26:21,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:26:21,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-23 03:26:21,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:26:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-23 03:26:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1363, Invalid=2669, Unknown=0, NotChecked=0, Total=4032 [2021-11-23 03:26:21,487 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand has 54 states, 54 states have (on average 5.518518518518518) internal successors, (298), 54 states have internal predecessors, (298), 50 states have call successors, (93), 48 states have call predecessors, (93), 47 states have return successors, (92), 49 states have call predecessors, (92), 49 states have call successors, (92) [2021-11-23 03:26:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:30,120 INFO L93 Difference]: Finished difference Result 415 states and 418 transitions. [2021-11-23 03:26:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-23 03:26:30,122 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.518518518518518) internal successors, (298), 54 states have internal predecessors, (298), 50 states have call successors, (93), 48 states have call predecessors, (93), 47 states have return successors, (92), 49 states have call predecessors, (92), 49 states have call successors, (92) Word has length 376 [2021-11-23 03:26:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:30,128 INFO L225 Difference]: With dead ends: 415 [2021-11-23 03:26:30,128 INFO L226 Difference]: Without dead ends: 409 [2021-11-23 03:26:30,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1063 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=3958, Invalid=8698, Unknown=0, NotChecked=0, Total=12656 [2021-11-23 03:26:30,135 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 291 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:30,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 338 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:26:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-23 03:26:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2021-11-23 03:26:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 307 states have (on average 1.003257328990228) internal successors, (308), 307 states have internal predecessors, (308), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 03:26:30,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2021-11-23 03:26:30,205 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 376 [2021-11-23 03:26:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:30,207 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2021-11-23 03:26:30,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.518518518518518) internal successors, (298), 54 states have internal predecessors, (298), 50 states have call successors, (93), 48 states have call predecessors, (93), 47 states have return successors, (92), 49 states have call predecessors, (92), 49 states have call successors, (92) [2021-11-23 03:26:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2021-11-23 03:26:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-23 03:26:30,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:30,219 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:30,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:30,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 03:26:30,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash -138579467, now seen corresponding path program 6 times [2021-11-23 03:26:30,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:30,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699454674] [2021-11-23 03:26:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:30,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:30,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:26:30,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101520691] [2021-11-23 03:26:30,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:26:30,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:30,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:26:30,461 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:26:30,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 03:26:32,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:26:32,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-23 03:26:32,085 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:26:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:26:35,758 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:26:35,759 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:26:35,760 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:26:35,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:35,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 03:26:35,977 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2021-11-23 03:26:35,984 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:26:36,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:26:36 BoogieIcfgContainer [2021-11-23 03:26:36,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:26:36,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:26:36,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:26:36,256 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:26:36,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:13" (3/4) ... [2021-11-23 03:26:36,259 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:26:36,493 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:26:36,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:26:36,494 INFO L158 Benchmark]: Toolchain (without parser) took 144078.79ms. Allocated memory was 83.9MB in the beginning and 167.8MB in the end (delta: 83.9MB). Free memory was 45.1MB in the beginning and 87.3MB in the end (delta: -42.1MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2021-11-23 03:26:36,495 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 61.5MB in the end (delta: 68.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:26:36,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.03ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 34.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:26:36,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.67ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 34.9MB in the beginning and 94.3MB in the end (delta: -59.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-23 03:26:36,496 INFO L158 Benchmark]: Boogie Preprocessor took 26.04ms. Allocated memory is still 115.3MB. Free memory was 94.3MB in the beginning and 93.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:26:36,497 INFO L158 Benchmark]: RCFGBuilder took 430.77ms. Allocated memory is still 115.3MB. Free memory was 93.2MB in the beginning and 82.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-11-23 03:26:36,497 INFO L158 Benchmark]: TraceAbstraction took 143039.15ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 82.4MB in the beginning and 110.3MB in the end (delta: -27.9MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. [2021-11-23 03:26:36,499 INFO L158 Benchmark]: Witness Printer took 237.82ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 87.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 03:26:36,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 61.5MB in the end (delta: 68.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.03ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 34.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.67ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 34.9MB in the beginning and 94.3MB in the end (delta: -59.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.04ms. Allocated memory is still 115.3MB. Free memory was 94.3MB in the beginning and 93.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.77ms. Allocated memory is still 115.3MB. Free memory was 93.2MB in the beginning and 82.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 143039.15ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 82.4MB in the beginning and 110.3MB in the end (delta: -27.9MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. * Witness Printer took 237.82ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 87.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. 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: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-16, x=0, X=56, y=0, Y=20] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-16, X=56, x=0, Y=20, y=0] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-16, x=0, x=0, x=0, X=56, Y=20, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-16, X=56, x=0, x=0, x=0, Y=20, y=0] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=1, v=24, x=1, x=0, x=0, X=56, y=0, Y=20, y++=68] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=24, x=0, x=0, X=56, x=1, y=0, Y=20, y++=68] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=24, x=0, X=56, x=20, x=1, Y=20, y=0, y++=68] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=24, X=56, x=1, x=0, x=20, Y=20, y=0, y++=68] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=2, v=-48, x=0, x=20, X=56, x=2, y=1, Y=20, y++=96] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-48, x=2, x=0, X=56, x=20, Y=20, y=1, y++=96] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-48, X=56, x=56, x=40, x=2, y=1, Y=20, y++=96] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-48, x=2, X=56, x=56, x=40, y=1, Y=20, y++=96] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=3, v=-8, x=56, x=3, x=40, X=56, y=1, Y=20, y++=96] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-8, x=3, x=40, x=56, X=56, Y=20, y=1, y++=96] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-8, x=56, x=60, x=3, X=56, Y=20, y=1, y++=96] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-8, x=3, x=60, X=56, x=56, Y=20, y=1, y++=96] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=4, v=32, x=4, x=56, x=60, X=56, y=1, Y=20, y++=96] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=32, X=56, x=60, x=4, x=56, y=1, Y=20, y++=96] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=32, X=56, x=4, x=80, x=56, y=1, Y=20, y++=96] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=32, x=56, x=80, x=4, X=56, Y=20, y=1, y++=96] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=5, v=-40, X=56, x=80, x=56, x=5, Y=20, y=2, y++=115] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-40, X=56, x=5, x=80, x=56, y=2, Y=20, y++=115] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-40, x=5, X=56, x=100, x=112, Y=20, y=2, y++=115] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-40, x=112, x=5, X=56, x=100, y=2, Y=20, y++=115] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=6, v=0, x=100, X=56, x=112, x=6, y=2, Y=20, y++=115] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=0, x=6, X=56, x=112, x=100, y=2, Y=20, y++=115] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=0, x=6, X=56, x=120, x=112, Y=20, y=2, y++=115] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=0, x=112, x=120, x=6, X=56, y=2, Y=20, y++=115] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=7, v=-72, x=120, x=112, X=56, x=7, Y=20, y=3, y++=134] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-72, X=56, x=120, x=112, x=7, Y=20, y=3, y++=134] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-72, x=7, x=140, x=168, X=56, Y=20, y=3, y++=134] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=-72, X=56, x=168, x=7, x=140, Y=20, y=3, y++=134] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=8, v=-32, X=56, x=140, x=168, x=8, y=3, Y=20, y++=134] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-32, x=8, X=56, x=140, x=168, Y=20, y=3, y++=134] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=-32, x=8, x=160, X=56, x=168, y=3, Y=20, y++=134] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=-32, X=56, x=8, x=168, x=160, Y=20, y=3, y++=134] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=9, v=8, X=56, x=168, x=160, x=9, Y=20, y=3, y++=134] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=8, x=168, x=9, x=160, X=56, y=3, Y=20, y++=134] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=8, x=168, x=180, x=9, X=56, Y=20, y=3, y++=134] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=8, x=180, x=168, x=9, X=56, y=3, Y=20, y++=134] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=10, v=-64, x=180, x=10, x=168, X=56, Y=20, y=4, y++=161] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-64, X=56, x=180, x=168, x=10, Y=20, y=4, y++=161] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=11, v=-64, x=10, x=224, X=56, x=200, Y=20, y=4, y++=161] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=11] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=11, v=-64, x=224, X=56, x=10, x=200, y=4, Y=20, y++=161] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=11, v=-24, X=56, x=11, x=224, x=200, y=4, Y=20, y++=161] [L31] EXPR counter++ VAL [counter=12, counter++=11, v=-24, x=11, x=224, X=56, x=200, y=4, Y=20, y++=161] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=12, v=-24, x=220, x=11, x=224, X=56, y=4, Y=20, y++=161] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=12] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=12, v=-24, x=11, x=220, x=224, X=56, Y=20, y=4, y++=161] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=12, v=16, x=220, x=224, x=12, X=56, y=4, Y=20, y++=161] [L31] EXPR counter++ VAL [counter=13, counter++=12, v=16, x=220, X=56, x=224, x=12, Y=20, y=4, y++=161] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=13, v=16, x=240, x=224, x=12, X=56, y=4, Y=20, y++=161] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=13] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=13, v=16, x=12, X=56, x=240, x=224, y=4, Y=20, y++=161] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=13, v=-56, X=56, x=240, x=224, x=13, y=5, Y=20, y++=185] [L31] EXPR counter++ VAL [counter=14, counter++=13, v=-56, x=13, x=224, X=56, x=240, Y=20, y=5, y++=185] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=14, v=-56, x=260, x=280, X=56, x=13, y=5, Y=20, y++=185] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=14] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=14, v=-56, X=56, x=13, x=280, x=260, Y=20, y=5, y++=185] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=14, v=-16, x=260, x=280, X=56, x=14, y=5, Y=20, y++=185] [L31] EXPR counter++ VAL [counter=15, counter++=14, v=-16, X=56, x=260, x=280, x=14, Y=20, y=5, y++=185] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=15, v=-16, x=14, X=56, x=280, x=280, Y=20, y=5, y++=185] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=15] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=15, v=-16, x=280, x=280, x=14, X=56, Y=20, y=5, y++=185] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=15, v=24, x=280, X=56, x=280, x=15, y=5, Y=20, y++=185] [L31] EXPR counter++ VAL [counter=16, counter++=15, v=24, x=280, X=56, x=15, x=280, Y=20, y=5, y++=185] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=16, v=24, x=15, x=300, x=280, X=56, y=5, Y=20, y++=185] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=16] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=16, v=24, X=56, x=15, x=280, x=300, Y=20, y=5, y++=185] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=16, v=-48, x=300, X=56, x=16, x=280, Y=20, y=6, y++=212] [L31] EXPR counter++ VAL [counter=17, counter++=16, v=-48, x=16, X=56, x=300, x=280, Y=20, y=6, y++=212] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=17, v=-48, X=56, x=320, x=336, x=16, Y=20, y=6, y++=212] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=17] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=17, v=-48, x=320, x=336, X=56, x=16, Y=20, y=6, y++=212] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=17, v=-8, x=320, x=336, x=17, X=56, y=6, Y=20, y++=212] [L31] EXPR counter++ VAL [counter=18, counter++=17, v=-8, x=17, x=320, x=336, X=56, y=6, Y=20, y++=212] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=18, v=-8, x=336, x=340, X=56, x=17, Y=20, y=6, y++=212] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=18] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=18, v=-8, x=17, x=340, X=56, x=336, y=6, Y=20, y++=212] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=18, v=32, X=56, x=340, x=18, x=336, Y=20, y=6, y++=212] [L31] EXPR counter++ VAL [counter=19, counter++=18, v=32, x=18, x=340, x=336, X=56, y=6, Y=20, y++=212] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=19, v=32, x=336, x=360, x=18, X=56, Y=20, y=6, y++=212] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=19] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=19, v=32, x=336, x=18, X=56, x=360, y=6, Y=20, y++=212] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=19, v=-40, x=19, x=336, X=56, x=360, y=7, Y=20, y++=241] [L31] EXPR counter++ VAL [counter=20, counter++=19, v=-40, X=56, x=336, x=360, x=19, Y=20, y=7, y++=241] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=20, v=-40, x=392, X=56, x=380, x=19, y=7, Y=20, y++=241] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=20] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=20, v=-40, x=19, x=380, X=56, x=392, y=7, Y=20, y++=241] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=20, v=0, x=20, x=380, X=56, x=392, Y=20, y=7, y++=241] [L31] EXPR counter++ VAL [counter=21, counter++=20, v=0, x=392, X=56, x=380, x=20, Y=20, y=7, y++=241] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=21, v=0, x=392, x=400, x=20, X=56, y=7, Y=20, y++=241] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=21] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=21] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=21, v=0, x=20, X=56, x=400, x=392, Y=20, y=7, y++=241] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=21, v=-72, x=400, X=56, x=21, x=392, Y=20, y=8, y++=266] [L31] EXPR counter++ VAL [counter=22, counter++=21, v=-72, X=56, x=400, x=392, x=21, Y=20, y=8, y++=266] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=22, v=-72, x=448, X=56, x=21, x=420, y=8, Y=20, y++=266] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=22] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=22] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=22, v=-72, x=448, X=56, x=420, x=21, Y=20, y=8, y++=266] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=22, v=-32, X=56, x=420, x=22, x=448, Y=20, y=8, y++=266] [L31] EXPR counter++ VAL [counter=23, counter++=22, v=-32, X=56, x=22, x=448, x=420, Y=20, y=8, y++=266] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=23, v=-32, x=440, x=448, x=22, X=56, y=8, Y=20, y++=266] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=23] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=23] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=23, v=-32, x=22, x=440, x=448, X=56, Y=20, y=8, y++=266] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=23, v=8, x=448, X=56, x=440, x=23, y=8, Y=20, y++=266] [L31] EXPR counter++ VAL [counter=24, counter++=23, v=8, x=448, X=56, x=440, x=23, y=8, Y=20, y++=266] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=24, v=8, x=460, x=23, X=56, x=448, y=8, Y=20, y++=266] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=24] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=24] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=24, v=8, X=56, x=23, x=448, x=460, Y=20, y=8, y++=266] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=24, v=-64, X=56, x=460, x=24, x=448, Y=20, y=9, y++=292] [L31] EXPR counter++ VAL [counter=25, counter++=24, v=-64, x=460, x=24, x=448, X=56, y=9, Y=20, y++=292] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=25, v=-64, X=56, x=24, x=480, x=504, y=9, Y=20, y++=292] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=25] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=25] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=25, v=-64, x=24, x=504, x=480, X=56, y=9, Y=20, y++=292] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=25, v=-24, x=480, x=504, x=25, X=56, Y=20, y=9, y++=292] [L31] EXPR counter++ VAL [counter=26, counter++=25, v=-24, x=25, x=504, x=480, X=56, y=9, Y=20, y++=292] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=26, v=-24, X=56, x=504, x=500, x=25, y=9, Y=20, y++=292] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=26] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=26] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=26, v=-24, x=500, x=504, x=25, X=56, Y=20, y=9, y++=292] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=26, v=16, X=56, x=26, x=504, x=500, Y=20, y=9, y++=292] [L31] EXPR counter++ VAL [counter=27, counter++=26, v=16, x=504, X=56, x=26, x=500, Y=20, y=9, y++=292] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=27, v=16, X=56, x=504, x=520, x=26, y=9, Y=20, y++=292] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=27] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=27] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=27, v=16, X=56, x=504, x=520, x=26, y=9, Y=20, y++=292] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=27, v=-56, x=520, x=504, X=56, x=27, y=10, Y=20, y++=322] [L31] EXPR counter++ VAL [counter=28, counter++=27, v=-56, x=504, x=520, x=27, X=56, Y=20, y=10, y++=322] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=28, v=-56, x=560, x=540, X=56, x=27, Y=20, y=10, y++=322] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=28] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=28] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=28, v=-56, x=540, x=560, X=56, x=27, Y=20, y=10, y++=322] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=28, v=-16, X=56, x=28, x=560, x=540, Y=20, y=10, y++=322] [L31] EXPR counter++ VAL [counter=29, counter++=28, v=-16, x=28, x=560, x=540, X=56, Y=20, y=10, y++=322] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=29, v=-16, x=560, x=28, X=56, x=560, y=10, Y=20, y++=322] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=29] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=29] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=29, v=-16, x=560, X=56, x=28, x=560, Y=20, y=10, y++=322] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=29, v=24, X=56, x=29, x=560, x=560, y=10, Y=20, y++=322] [L31] EXPR counter++ VAL [counter=30, counter++=29, v=24, x=560, x=29, X=56, x=560, Y=20, y=10, y++=322] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=30, v=24, x=560, x=580, x=29, X=56, Y=20, y=10, y++=322] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=30] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=30] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=30, v=24, x=560, x=580, X=56, x=29, y=10, Y=20, y++=322] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=30, v=-48, x=560, x=580, X=56, x=30, y=11, Y=20, y++=349] [L31] EXPR counter++ VAL [counter=31, counter++=30, v=-48, X=56, x=560, x=30, x=580, y=11, Y=20, y++=349] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=31, v=-48, x=616, X=56, x=600, x=30, y=11, Y=20, y++=349] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=31] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=31] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=31, v=-48, x=30, X=56, x=600, x=616, Y=20, y=11, y++=349] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=31, v=-8, x=600, X=56, x=616, x=31, Y=20, y=11, y++=349] [L31] EXPR counter++ VAL [counter=32, counter++=31, v=-8, x=31, x=600, X=56, x=616, Y=20, y=11, y++=349] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=32, v=-8, x=620, X=56, x=31, x=616, Y=20, y=11, y++=349] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=32] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=32] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=32, v=-8, x=31, X=56, x=616, x=620, Y=20, y=11, y++=349] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=32, v=32, X=56, x=620, x=616, x=32, Y=20, y=11, y++=349] [L31] EXPR counter++ VAL [counter=33, counter++=32, v=32, x=32, x=616, x=620, X=56, Y=20, y=11, y++=349] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=33, v=32, x=32, x=640, x=616, X=56, y=11, Y=20, y++=349] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=33] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=33] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=33, v=32, x=640, x=32, x=616, X=56, Y=20, y=11, y++=349] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=33, v=-40, x=33, x=640, X=56, x=616, Y=20, y=12, y++=367] [L31] EXPR counter++ VAL [counter=34, counter++=33, v=-40, X=56, x=640, x=616, x=33, Y=20, y=12, y++=367] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=34, v=-40, x=672, x=660, x=33, X=56, y=12, Y=20, y++=367] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=34] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=34] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=34, v=-40, x=672, x=33, X=56, x=660, y=12, Y=20, y++=367] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=34, v=0, x=660, x=34, X=56, x=672, y=12, Y=20, y++=367] [L31] EXPR counter++ VAL [counter=35, counter++=34, v=0, x=672, x=660, x=34, X=56, y=12, Y=20, y++=367] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=35, v=0, x=672, x=680, X=56, x=34, Y=20, y=12, y++=367] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=35] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=35] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=35, v=0, x=680, X=56, x=34, x=672, y=12, Y=20, y++=367] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=35, v=-72, x=35, X=56, x=680, x=672, Y=20, y=13, y++=383] [L31] EXPR counter++ VAL [counter=36, counter++=35, v=-72, X=56, x=672, x=680, x=35, Y=20, y=13, y++=383] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=36, v=-72, x=700, X=56, x=35, x=728, Y=20, y=13, y++=383] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=36] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=36] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=36, v=-72, X=56, x=700, x=35, x=728, y=13, Y=20, y++=383] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=36, v=-32, X=56, x=728, x=700, x=36, Y=20, y=13, y++=383] [L31] EXPR counter++ VAL [counter=37, counter++=36, v=-32, x=36, x=700, x=728, X=56, y=13, Y=20, y++=383] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=37, v=-32, x=728, X=56, x=720, x=36, Y=20, y=13, y++=383] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=37] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=37] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=37, v=-32, x=36, x=728, x=720, X=56, y=13, Y=20, y++=383] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=37, v=8, x=728, x=37, x=720, X=56, y=13, Y=20, y++=383] [L31] EXPR counter++ VAL [counter=38, counter++=37, v=8, x=728, x=37, X=56, x=720, Y=20, y=13, y++=383] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=38, v=8, x=37, x=740, x=728, X=56, Y=20, y=13, y++=383] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=38] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=38] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=38, v=8, x=740, x=37, x=728, X=56, Y=20, y=13, y++=383] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=38, v=-64, x=728, x=38, X=56, x=740, y=14, Y=20, y++=421] [L31] EXPR counter++ VAL [counter=39, counter++=38, v=-64, x=728, x=38, X=56, x=740, Y=20, y=14, y++=421] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=39, v=-64, x=38, x=784, x=760, X=56, y=14, Y=20, y++=421] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=39] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=39] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=39, v=-64, x=760, x=784, x=38, X=56, y=14, Y=20, y++=421] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=39, v=-24, x=784, x=39, x=760, X=56, Y=20, y=14, y++=421] [L31] EXPR counter++ VAL [counter=40, counter++=39, v=-24, x=39, x=784, x=760, X=56, y=14, Y=20, y++=421] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=40, v=-24, x=780, X=56, x=784, x=39, y=14, Y=20, y++=421] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=40] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=40] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=40, v=-24, x=39, x=784, x=780, X=56, y=14, Y=20, y++=421] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=40, v=16, x=40, x=784, x=780, X=56, y=14, Y=20, y++=421] [L31] EXPR counter++ VAL [counter=41, counter++=40, v=16, X=56, x=40, x=780, x=784, Y=20, y=14, y++=421] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=41, v=16, x=40, X=56, x=784, x=800, Y=20, y=14, y++=421] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=41] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=41] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=41, v=16, X=56, x=800, x=784, x=40, y=14, Y=20, y++=421] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=41, v=-56, X=56, x=784, x=41, x=800, y=15, Y=20, y++=435] [L31] EXPR counter++ VAL [counter=42, counter++=41, v=-56, X=56, x=784, x=800, x=41, Y=20, y=15, y++=435] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=42, v=-56, x=840, x=820, X=56, x=41, Y=20, y=15, y++=435] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=42] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=42] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=42, v=-56, x=840, X=56, x=820, x=41, Y=20, y=15, y++=435] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=42, v=-16, x=840, x=42, x=820, X=56, Y=20, y=15, y++=435] [L31] EXPR counter++ VAL [counter=43, counter++=42, v=-16, X=56, x=820, x=42, x=840, Y=20, y=15, y++=435] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=43, v=-16, x=840, X=56, x=42, x=840, y=15, Y=20, y++=435] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=43] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=43] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=43, v=-16, x=840, x=840, X=56, x=42, y=15, Y=20, y++=435] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=43, v=24, x=43, X=56, x=840, x=840, y=15, Y=20, y++=435] [L31] EXPR counter++ VAL [counter=44, counter++=43, v=24, x=840, x=840, X=56, x=43, Y=20, y=15, y++=435] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=44, v=24, x=860, x=840, x=43, X=56, Y=20, y=15, y++=435] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=44] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=44] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=44, v=24, x=43, x=860, x=840, X=56, y=15, Y=20, y++=435] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=44, v=-48, x=44, X=56, x=860, x=840, Y=20, y=16, y++=474] [L31] EXPR counter++ VAL [counter=45, counter++=44, v=-48, X=56, x=44, x=860, x=840, y=16, Y=20, y++=474] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=45, v=-48, x=896, X=56, x=880, x=44, Y=20, y=16, y++=474] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=45] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=45] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=45, v=-48, x=896, X=56, x=44, x=880, y=16, Y=20, y++=474] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=45, v=-8, X=56, x=880, x=45, x=896, Y=20, y=16, y++=474] [L31] EXPR counter++ VAL [counter=46, counter++=45, v=-8, x=45, x=896, X=56, x=880, Y=20, y=16, y++=474] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=46, v=-8, x=900, x=45, X=56, x=896, Y=20, y=16, y++=474] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=46] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=46] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=46, v=-8, X=56, x=45, x=896, x=900, Y=20, y=16, y++=474] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=46, v=32, x=46, x=900, X=56, x=896, Y=20, y=16, y++=474] [L31] EXPR counter++ VAL [counter=47, counter++=46, v=32, x=896, X=56, x=46, x=900, Y=20, y=16, y++=474] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=47, v=32, x=896, x=46, X=56, x=920, Y=20, y=16, y++=474] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=47] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=47] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=47, v=32, x=896, x=920, x=46, X=56, y=16, Y=20, y++=474] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=47, v=-40, x=920, x=47, x=896, X=56, y=17, Y=20, y++=492] [L31] EXPR counter++ VAL [counter=48, counter++=47, v=-40, X=56, x=920, x=47, x=896, y=17, Y=20, y++=492] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=48, v=-40, x=940, x=952, x=47, X=56, y=17, Y=20, y++=492] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=48] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=48] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=48, v=-40, x=952, X=56, x=47, x=940, y=17, Y=20, y++=492] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=48, v=0, x=48, X=56, x=940, x=952, y=17, Y=20, y++=492] [L31] EXPR counter++ VAL [counter=49, counter++=48, v=0, X=56, x=48, x=940, x=952, y=17, Y=20, y++=492] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=49, v=0, x=952, x=48, X=56, x=960, y=17, Y=20, y++=492] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=49] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=49] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=49, v=0, x=48, x=960, x=952, X=56, Y=20, y=17, y++=492] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=49, v=-72, x=960, x=49, X=56, x=952, Y=20, y=18, y++=511] [L31] EXPR counter++ VAL [counter=50, counter++=49, v=-72, X=56, x=960, x=49, x=952, y=18, Y=20, y++=511] [L31] COND TRUE counter++<50 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=50, v=-72, x=980, X=56, x=1008, x=49, Y=20, y=18, y++=511] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=50] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=50] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=50, v=-72, x=1008, X=56, x=980, x=49, Y=20, y=18, y++=511] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=50, v=-32, X=56, x=50, x=1008, x=980, y=18, Y=20, y++=511] [L31] EXPR counter++ VAL [counter=51, counter++=50, v=-32, X=56, x=1008, x=50, x=980, y=18, Y=20, y++=511] [L31] COND FALSE !(counter++<50) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=51, v=-32, x=900, x=50, x=1000, X=56, y=18, Y=20, y++=511] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=51] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=51] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 142.7s, OverallIterations: 9, TraceHistogramMax: 51, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 22.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1053 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1053 mSDsluCounter, 1149 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1096 mSDsCounter, 437 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1273 IncrementalHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 437 mSolverCounterUnsat, 204 mSDtfsCounter, 1273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2357 GetRequests, 1974 SyntacticMatches, 3 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6003 ImplicationChecksByTransitivity, 86.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=409occurred in iteration=8, InterpolantAutomatonStates: 307, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 20.9s SatisfiabilityAnalysisTime, 25.9s InterpolantComputationTime, 1156 NumberOfCodeBlocks, 1156 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 1474 ConstructedInterpolants, 0 QuantifiedInterpolants, 4371 SizeOfPredicates, 99 NumberOfNonLiveVariables, 2324 ConjunctsInSsa, 236 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 5624/21770 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 03:26:36,763 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-23 03:26:36,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76643a9-46b8-4fe0-ab15-e35202c6784c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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