./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan --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 ce365c5fd61effc2e95c898beace82398b56e664 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:23:01,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:23:01,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:23:01,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:23:01,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:23:01,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:23:01,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:23:01,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:23:01,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:23:01,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:23:01,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:23:01,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:23:01,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:23:01,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:23:01,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:23:01,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:23:01,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:23:01,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:23:01,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:23:01,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:23:01,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:23:01,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:23:01,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:23:01,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:23:01,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:23:01,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:23:01,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:23:01,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:23:01,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:23:01,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:23:01,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:23:01,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:23:01,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:23:01,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:23:01,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:23:01,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:23:01,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:23:01,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:23:01,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:23:01,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:23:01,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:23:01,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:23:01,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:23:01,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:23:01,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:23:01,296 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:23:01,296 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:23:01,296 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:23:01,296 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:23:01,297 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:23:01,297 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:23:01,297 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:23:01,297 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:23:01,297 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:23:01,297 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:23:01,297 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:23:01,297 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:23:01,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:23:01,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:23:01,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:23:01,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:23:01,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:23:01,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:23:01,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:23:01,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:23:01,299 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:23:01,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:23:01,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:23:01,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:23:01,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:23:01,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:23:01,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:23:01,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:23:01,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:23:01,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:23:01,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:23:01,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:23:01,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:23:01,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:23:01,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:23:01,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:23:01,301 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-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce365c5fd61effc2e95c898beace82398b56e664 [2020-12-09 08:23:01,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:23:01,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:23:01,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:23:01,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:23:01,493 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:23:01,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c [2020-12-09 08:23:01,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/data/2ecf42bfd/25a4224114044dae9d774530f420e4d4/FLAGfe918d088 [2020-12-09 08:23:01,877 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:23:01,877 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c [2020-12-09 08:23:01,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/data/2ecf42bfd/25a4224114044dae9d774530f420e4d4/FLAGfe918d088 [2020-12-09 08:23:02,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/data/2ecf42bfd/25a4224114044dae9d774530f420e4d4 [2020-12-09 08:23:02,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:23:02,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:23:02,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:23:02,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:23:02,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:23:02,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71aac0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02, skipping insertion in model container [2020-12-09 08:23:02,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:23:02,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:23:02,467 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c[573,586] [2020-12-09 08:23:02,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:23:02,481 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:23:02,489 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c[573,586] [2020-12-09 08:23:02,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:23:02,502 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:23:02,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02 WrapperNode [2020-12-09 08:23:02,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:23:02,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:23:02,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:23:02,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:23:02,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:23:02,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:23:02,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:23:02,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:23:02,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... [2020-12-09 08:23:02,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:23:02,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:23:02,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:23:02,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:23:02,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:23:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:23:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:23:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:23:02,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:23:02,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:23:02,809 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 08:23:02,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:23:02 BoogieIcfgContainer [2020-12-09 08:23:02,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:23:02,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:23:02,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:23:02,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:23:02,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:23:02" (1/3) ... [2020-12-09 08:23:02,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b379a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:23:02, skipping insertion in model container [2020-12-09 08:23:02,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:02" (2/3) ... [2020-12-09 08:23:02,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b379a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:23:02, skipping insertion in model container [2020-12-09 08:23:02,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:23:02" (3/3) ... [2020-12-09 08:23:02,817 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound100.c [2020-12-09 08:23:02,827 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:23:02,830 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 08:23:02,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 08:23:02,865 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:23:02,866 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:23:02,866 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:23:02,866 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:23:02,866 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:23:02,866 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:23:02,866 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:23:02,866 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:23:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 08:23:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:23:02,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:02,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:23:02,881 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash 98480205, now seen corresponding path program 1 times [2020-12-09 08:23:02,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:02,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894732379] [2020-12-09 08:23:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:23:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:03,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894732379] [2020-12-09 08:23:03,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:23:03,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:23:03,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293643885] [2020-12-09 08:23:03,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:23:03,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:03,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:23:03,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:23:03,020 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-09 08:23:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:03,030 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-12-09 08:23:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:23:03,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 08:23:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:03,037 INFO L225 Difference]: With dead ends: 25 [2020-12-09 08:23:03,038 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 08:23:03,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:23:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 08:23:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 08:23:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 08:23:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-12-09 08:23:03,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-12-09 08:23:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:03,064 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-12-09 08:23:03,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:23:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-09 08:23:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:23:03,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:03,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:23:03,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:23:03,065 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:03,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:03,066 INFO L82 PathProgramCache]: Analyzing trace with hash 97621232, now seen corresponding path program 1 times [2020-12-09 08:23:03,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:03,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977401057] [2020-12-09 08:23:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:03,085 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:03,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066442580] [2020-12-09 08:23:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:23:03,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:23:03,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:03,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:03,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977401057] [2020-12-09 08:23:03,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:03,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066442580] [2020-12-09 08:23:03,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:23:03,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:23:03,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206959770] [2020-12-09 08:23:03,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:23:03,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:03,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:23:03,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:23:03,242 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2020-12-09 08:23:03,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:03,295 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-12-09 08:23:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:23:03,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-12-09 08:23:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:03,296 INFO L225 Difference]: With dead ends: 20 [2020-12-09 08:23:03,296 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 08:23:03,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:23:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 08:23:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 9. [2020-12-09 08:23:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 08:23:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-09 08:23:03,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2020-12-09 08:23:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:03,299 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-09 08:23:03,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:23:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-09 08:23:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:23:03,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:03,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:23:03,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 08:23:03,502 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:03,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1268746775, now seen corresponding path program 1 times [2020-12-09 08:23:03,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:03,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336976080] [2020-12-09 08:23:03,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:03,542 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:03,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155928772] [2020-12-09 08:23:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:23:03,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:23:03,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:03,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:03,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336976080] [2020-12-09 08:23:03,686 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:03,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155928772] [2020-12-09 08:23:03,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:23:03,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:23:03,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37164476] [2020-12-09 08:23:03,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:23:03,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:23:03,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:23:03,687 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2020-12-09 08:23:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:03,706 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-12-09 08:23:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:23:03,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 08:23:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:03,707 INFO L225 Difference]: With dead ends: 23 [2020-12-09 08:23:03,707 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 08:23:03,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:23:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 08:23:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2020-12-09 08:23:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 08:23:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-09 08:23:03,711 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-12-09 08:23:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:03,712 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-09 08:23:03,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:23:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-09 08:23:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:23:03,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:03,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:23:03,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:03,914 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:03,916 INFO L82 PathProgramCache]: Analyzing trace with hash 546169794, now seen corresponding path program 1 times [2020-12-09 08:23:03,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:03,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754975816] [2020-12-09 08:23:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:03,952 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:03,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25784503] [2020-12-09 08:23:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:23:04,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 08:23:04,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:04,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:04,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754975816] [2020-12-09 08:23:04,213 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:04,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25784503] [2020-12-09 08:23:04,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:23:04,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-09 08:23:04,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828464591] [2020-12-09 08:23:04,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 08:23:04,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:04,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 08:23:04,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-09 08:23:04,215 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 11 states. [2020-12-09 08:23:04,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:04,286 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 08:23:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:23:04,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2020-12-09 08:23:04,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:04,287 INFO L225 Difference]: With dead ends: 19 [2020-12-09 08:23:04,287 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 08:23:04,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-09 08:23:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 08:23:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 08:23:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 08:23:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 08:23:04,290 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-12-09 08:23:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:04,291 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 08:23:04,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 08:23:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 08:23:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:23:04,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:04,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 08:23:04,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:04,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1998402165, now seen corresponding path program 1 times [2020-12-09 08:23:04,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:04,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098933642] [2020-12-09 08:23:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:04,530 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:04,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368081319] [2020-12-09 08:23:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:23:04,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 08:23:04,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:04,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:04,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098933642] [2020-12-09 08:23:04,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:04,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368081319] [2020-12-09 08:23:04,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [641139281] [2020-12-09 08:23:04,779 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 08:23:04,779 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:23:04,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:23:04,787 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:23:04,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:23:04,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:23:05,214 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:23:05,680 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-09 08:23:05,793 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:05,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:23:05,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-12-09 08:23:05,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146358917] [2020-12-09 08:23:05,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 08:23:05,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:05,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 08:23:05,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-12-09 08:23:05,794 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2020-12-09 08:23:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:05,858 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-12-09 08:23:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 08:23:05,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-09 08:23:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:05,859 INFO L225 Difference]: With dead ends: 35 [2020-12-09 08:23:05,859 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 08:23:05,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2020-12-09 08:23:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 08:23:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 08:23:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 08:23:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-12-09 08:23:05,864 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 14 [2020-12-09 08:23:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:05,864 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-12-09 08:23:05,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 08:23:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-12-09 08:23:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 08:23:05,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:05,865 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2020-12-09 08:23:06,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:06,066 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:06,066 INFO L82 PathProgramCache]: Analyzing trace with hash 652162767, now seen corresponding path program 2 times [2020-12-09 08:23:06,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:06,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939402856] [2020-12-09 08:23:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:06,074 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:06,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523830375] [2020-12-09 08:23:06,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:06,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-09 08:23:06,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:23:06,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 08:23:06,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:06,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:06,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939402856] [2020-12-09 08:23:06,306 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:06,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523830375] [2020-12-09 08:23:06,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [500625027] [2020-12-09 08:23:06,308 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 08:23:06,308 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:23:06,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:23:06,308 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:23:06,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:23:06,337 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:23:06,585 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:23:07,086 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:07,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:23:07,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-09 08:23:07,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018410957] [2020-12-09 08:23:07,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-09 08:23:07,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:07,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-09 08:23:07,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-12-09 08:23:07,087 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 18 states. [2020-12-09 08:23:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:07,237 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-12-09 08:23:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-09 08:23:07,238 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 30 [2020-12-09 08:23:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:07,238 INFO L225 Difference]: With dead ends: 67 [2020-12-09 08:23:07,238 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 08:23:07,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=1040, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 08:23:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 08:23:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-09 08:23:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 08:23:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2020-12-09 08:23:07,249 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 30 [2020-12-09 08:23:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:07,249 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2020-12-09 08:23:07,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-09 08:23:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-12-09 08:23:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-09 08:23:07,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:07,252 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2020-12-09 08:23:07,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-09 08:23:07,452 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:07,453 INFO L82 PathProgramCache]: Analyzing trace with hash -43060905, now seen corresponding path program 3 times [2020-12-09 08:23:07,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:07,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55348767] [2020-12-09 08:23:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:07,464 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:07,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488541058] [2020-12-09 08:23:07,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:07,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 08:23:07,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:23:07,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-09 08:23:07,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:07,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:07,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55348767] [2020-12-09 08:23:07,959 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:07,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488541058] [2020-12-09 08:23:07,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076834289] [2020-12-09 08:23:07,961 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 08:23:07,961 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:23:07,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:23:07,961 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:23:07,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:23:07,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:23:08,163 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:23:08,686 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:08,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:23:08,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2020-12-09 08:23:08,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068857912] [2020-12-09 08:23:08,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-09 08:23:08,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-09 08:23:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=1113, Unknown=0, NotChecked=0, Total=1640 [2020-12-09 08:23:08,688 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 34 states. [2020-12-09 08:23:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:09,165 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2020-12-09 08:23:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-12-09 08:23:09,166 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 62 [2020-12-09 08:23:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:09,167 INFO L225 Difference]: With dead ends: 131 [2020-12-09 08:23:09,167 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 08:23:09,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1470, Invalid=3360, Unknown=0, NotChecked=0, Total=4830 [2020-12-09 08:23:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 08:23:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-12-09 08:23:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 08:23:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2020-12-09 08:23:09,182 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 62 [2020-12-09 08:23:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:09,182 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2020-12-09 08:23:09,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-09 08:23:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2020-12-09 08:23:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-09 08:23:09,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:09,183 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2020-12-09 08:23:09,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:09,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:09,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:09,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1163262361, now seen corresponding path program 4 times [2020-12-09 08:23:09,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:09,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417263451] [2020-12-09 08:23:09,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:09,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:09,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658720894] [2020-12-09 08:23:09,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:23:09,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-09 08:23:09,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:09,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417263451] [2020-12-09 08:23:11,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658720894] [2020-12-09 08:23:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033324363] [2020-12-09 08:23:11,025 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 08:23:11,025 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:23:11,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:23:11,025 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:23:11,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:23:11,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:23:11,186 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:23:11,765 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:11,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:23:11,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2020-12-09 08:23:11,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553026653] [2020-12-09 08:23:11,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-12-09 08:23:11,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:11,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-12-09 08:23:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2047, Invalid=3209, Unknown=0, NotChecked=0, Total=5256 [2020-12-09 08:23:11,769 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 66 states. [2020-12-09 08:23:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:13,175 INFO L93 Difference]: Finished difference Result 259 states and 290 transitions. [2020-12-09 08:23:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-12-09 08:23:13,175 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 126 [2020-12-09 08:23:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:13,177 INFO L225 Difference]: With dead ends: 259 [2020-12-09 08:23:13,177 INFO L226 Difference]: Without dead ends: 255 [2020-12-09 08:23:13,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3309 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5982, Invalid=11840, Unknown=0, NotChecked=0, Total=17822 [2020-12-09 08:23:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-12-09 08:23:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2020-12-09 08:23:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-12-09 08:23:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2020-12-09 08:23:13,201 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 126 [2020-12-09 08:23:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:13,201 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2020-12-09 08:23:13,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-12-09 08:23:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2020-12-09 08:23:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-12-09 08:23:13,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:13,204 INFO L422 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 1, 1, 1, 1, 1] [2020-12-09 08:23:13,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:13,406 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:13,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:13,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1550929785, now seen corresponding path program 5 times [2020-12-09 08:23:13,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:13,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040181815] [2020-12-09 08:23:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:13,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:13,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490380208] [2020-12-09 08:23:13,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:14,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2020-12-09 08:23:14,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:23:14,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 127 conjunts are in the unsatisfiable core [2020-12-09 08:23:14,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:23:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 0 proven. 7688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:15,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:23:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 0 proven. 7688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:23:17,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040181815] [2020-12-09 08:23:17,899 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:17,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490380208] [2020-12-09 08:23:17,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1700828800] [2020-12-09 08:23:17,901 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 08:23:17,901 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:23:17,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:23:17,901 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:23:17,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:23:17,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:23:18,061 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:23:18,834 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:23:18,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:23:18,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 103 [2020-12-09 08:23:18,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794075808] [2020-12-09 08:23:18,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-12-09 08:23:18,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:23:18,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-12-09 08:23:18,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5182, Invalid=7028, Unknown=0, NotChecked=0, Total=12210 [2020-12-09 08:23:18,838 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 104 states. [2020-12-09 08:23:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:23:22,328 INFO L93 Difference]: Finished difference Result 411 states and 448 transitions. [2020-12-09 08:23:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2020-12-09 08:23:22,328 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 254 [2020-12-09 08:23:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:23:22,330 INFO L225 Difference]: With dead ends: 411 [2020-12-09 08:23:22,330 INFO L226 Difference]: Without dead ends: 407 [2020-12-09 08:23:22,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 650 SyntacticMatches, 1 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7130 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=15343, Invalid=28547, Unknown=0, NotChecked=0, Total=43890 [2020-12-09 08:23:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-12-09 08:23:22,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2020-12-09 08:23:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-09 08:23:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2020-12-09 08:23:22,360 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 254 [2020-12-09 08:23:22,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:23:22,360 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2020-12-09 08:23:22,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-12-09 08:23:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2020-12-09 08:23:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-12-09 08:23:22,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:23:22,366 INFO L422 BasicCegarLoop]: trace histogram [101, 100, 100, 100, 1, 1, 1, 1, 1] [2020-12-09 08:23:22,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-12-09 08:23:22,567 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:23:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:23:22,569 INFO L82 PathProgramCache]: Analyzing trace with hash 849166733, now seen corresponding path program 6 times [2020-12-09 08:23:22,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:23:22,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869762673] [2020-12-09 08:23:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:23:22,617 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:23:22,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107116173] [2020-12-09 08:23:22,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:23,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 08:23:23,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-09 08:23:23,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:23:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:23:23,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:23:26,489 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 08:23:26,490 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:23:26,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:23:26,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:23:26 BoogieIcfgContainer [2020-12-09 08:23:26,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:23:26,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:23:26,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:23:26,836 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:23:26,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:23:02" (3/4) ... [2020-12-09 08:23:26,838 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 08:23:26,991 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bc3a7fcf-c027-44d1-882c-c109ffc3d74e/bin/utaipan/witness.graphml [2020-12-09 08:23:26,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:23:26,992 INFO L168 Benchmark]: Toolchain (without parser) took 24668.06 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 80.7 MB in the beginning and 162.3 MB in the end (delta: -81.6 MB). Peak memory consumption was 145.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:23:26,992 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 107.0 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:23:26,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.31 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 83.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:23:26,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.28 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:23:26,993 INFO L168 Benchmark]: Boogie Preprocessor took 15.15 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 81.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:23:26,993 INFO L168 Benchmark]: RCFGBuilder took 268.96 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 60.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 08:23:26,994 INFO L168 Benchmark]: TraceAbstraction took 24023.81 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 60.1 MB in the beginning and 71.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:23:26,994 INFO L168 Benchmark]: Witness Printer took 155.48 ms. Allocated memory is still 226.5 MB. Free memory was 71.3 MB in the beginning and 162.3 MB in the end (delta: -91.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:23:26,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 107.0 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.31 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 83.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.28 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.15 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 81.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.96 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 60.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24023.81 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 60.1 MB in the beginning and 71.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 16.1 GB. * Witness Printer took 155.48 ms. Allocated memory is still 226.5 MB. Free memory was 71.3 MB in the beginning and 162.3 MB in the end (delta: -91.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=11] [L36] EXPR counter++ VAL [counter=12] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=12] [L36] EXPR counter++ VAL [counter=13] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=13] [L36] EXPR counter++ VAL [counter=14] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=14] [L36] EXPR counter++ VAL [counter=15] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=15] [L36] EXPR counter++ VAL [counter=16] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=16] [L36] EXPR counter++ VAL [counter=17] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=17] [L36] EXPR counter++ VAL [counter=18] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=18] [L36] EXPR counter++ VAL [counter=19] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=19] [L36] EXPR counter++ VAL [counter=20] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=20] [L36] EXPR counter++ VAL [counter=21] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=21] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=21] [L36] EXPR counter++ VAL [counter=22] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=22] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=22] [L36] EXPR counter++ VAL [counter=23] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=23] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=23] [L36] EXPR counter++ VAL [counter=24] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=24] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=24] [L36] EXPR counter++ VAL [counter=25] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=25] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=25] [L36] EXPR counter++ VAL [counter=26] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=26] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=26] [L36] EXPR counter++ VAL [counter=27] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=27] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=27] [L36] EXPR counter++ VAL [counter=28] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=28] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=28] [L36] EXPR counter++ VAL [counter=29] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=29] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=29] [L36] EXPR counter++ VAL [counter=30] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=30] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=30] [L36] EXPR counter++ VAL [counter=31] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=31] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=31] [L36] EXPR counter++ VAL [counter=32] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=32] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=32] [L36] EXPR counter++ VAL [counter=33] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=33] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=33] [L36] EXPR counter++ VAL [counter=34] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=34] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=34] [L36] EXPR counter++ VAL [counter=35] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=35] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=35] [L36] EXPR counter++ VAL [counter=36] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=36] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=36] [L36] EXPR counter++ VAL [counter=37] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=37] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=37] [L36] EXPR counter++ VAL [counter=38] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=38] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=38] [L36] EXPR counter++ VAL [counter=39] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=39] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=39] [L36] EXPR counter++ VAL [counter=40] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=40] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=40] [L36] EXPR counter++ VAL [counter=41] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=41] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=41] [L36] EXPR counter++ VAL [counter=42] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=42] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=42] [L36] EXPR counter++ VAL [counter=43] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=43] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=43] [L36] EXPR counter++ VAL [counter=44] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=44] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=44] [L36] EXPR counter++ VAL [counter=45] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=45] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=45] [L36] EXPR counter++ VAL [counter=46] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=46] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=46] [L36] EXPR counter++ VAL [counter=47] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=47] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=47] [L36] EXPR counter++ VAL [counter=48] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=48] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=48] [L36] EXPR counter++ VAL [counter=49] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=49] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=49] [L36] EXPR counter++ VAL [counter=50] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=50] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=50] [L36] EXPR counter++ VAL [counter=51] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=51] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=51] [L36] EXPR counter++ VAL [counter=52] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=52] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=52] [L36] EXPR counter++ VAL [counter=53] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=53] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=53] [L36] EXPR counter++ VAL [counter=54] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=54] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=54] [L36] EXPR counter++ VAL [counter=55] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=55] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=55] [L36] EXPR counter++ VAL [counter=56] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=56] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=56] [L36] EXPR counter++ VAL [counter=57] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=57] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=57] [L36] EXPR counter++ VAL [counter=58] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=58] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=58] [L36] EXPR counter++ VAL [counter=59] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=59] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=59] [L36] EXPR counter++ VAL [counter=60] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=60] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=60] [L36] EXPR counter++ VAL [counter=61] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=61] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=61] [L36] EXPR counter++ VAL [counter=62] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=62] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=62] [L36] EXPR counter++ VAL [counter=63] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=63] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=63] [L36] EXPR counter++ VAL [counter=64] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=64] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=64] [L36] EXPR counter++ VAL [counter=65] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=65] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=65] [L36] EXPR counter++ VAL [counter=66] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=66] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=66] [L36] EXPR counter++ VAL [counter=67] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=67] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=67] [L36] EXPR counter++ VAL [counter=68] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=68] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=68] [L36] EXPR counter++ VAL [counter=69] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=69] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=69] [L36] EXPR counter++ VAL [counter=70] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=70] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=70] [L36] EXPR counter++ VAL [counter=71] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=71] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=71] [L36] EXPR counter++ VAL [counter=72] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=72] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=72] [L36] EXPR counter++ VAL [counter=73] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=73] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=73] [L36] EXPR counter++ VAL [counter=74] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=74] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=74] [L36] EXPR counter++ VAL [counter=75] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=75] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=75] [L36] EXPR counter++ VAL [counter=76] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=76] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=76] [L36] EXPR counter++ VAL [counter=77] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=77] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=77] [L36] EXPR counter++ VAL [counter=78] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=78] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=78] [L36] EXPR counter++ VAL [counter=79] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=79] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=79] [L36] EXPR counter++ VAL [counter=80] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=80] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=80] [L36] EXPR counter++ VAL [counter=81] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=81] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=81] [L36] EXPR counter++ VAL [counter=82] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=82] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=82] [L36] EXPR counter++ VAL [counter=83] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=83] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=83] [L36] EXPR counter++ VAL [counter=84] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=84] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=84] [L36] EXPR counter++ VAL [counter=85] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=85] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=85] [L36] EXPR counter++ VAL [counter=86] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=86] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=86] [L36] EXPR counter++ VAL [counter=87] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=87] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=87] [L36] EXPR counter++ VAL [counter=88] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=88] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=88] [L36] EXPR counter++ VAL [counter=89] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=89] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=89] [L36] EXPR counter++ VAL [counter=90] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=90] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=90] [L36] EXPR counter++ VAL [counter=91] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=91] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=91] [L36] EXPR counter++ VAL [counter=92] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=92] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=92] [L36] EXPR counter++ VAL [counter=93] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=93] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=93] [L36] EXPR counter++ VAL [counter=94] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=94] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=94] [L36] EXPR counter++ VAL [counter=95] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=95] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=95] [L36] EXPR counter++ VAL [counter=96] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=96] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=96] [L36] EXPR counter++ VAL [counter=97] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=97] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=97] [L36] EXPR counter++ VAL [counter=98] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=98] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=98] [L36] EXPR counter++ VAL [counter=99] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=99] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=99] [L36] EXPR counter++ VAL [counter=100] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=100] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=100] [L36] EXPR counter++ VAL [counter=101] [L36] COND FALSE !(counter++<100) [L16] COND TRUE !(cond) VAL [counter=101] [L18] reach_error() VAL [counter=101] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.8s, OverallIterations: 10, TraceHistogramMax: 101, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 162 SDslu, 585 SDs, 0 SdLazy, 519 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1695 GetRequests, 1208 SyntacticMatches, 1 SemanticMatches, 486 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11881 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 916 NumberOfCodeBlocks, 916 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 998 ConstructedInterpolants, 0 QuantifiedInterpolants, 501563 SizeOfPredicates, 136 NumberOfNonLiveVariables, 1863 ConjunctsInSsa, 283 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 0/19920 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! Received shutdown request...