./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P --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 7849780e572f4b715fd4a0599e2552ba9e578b3aff0bf5f111ebb8575b54953d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:39,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:39,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:39,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:39,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:39,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:39,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:39,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:39,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:39,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:39,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:39,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:39,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:39,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:39,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:39,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:39,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:39,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:39,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:39,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:39,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:39,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:39,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:39,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:39,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:39,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:39,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:39,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:39,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:39,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:39,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:39,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:39,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:39,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:39,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:39,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:39,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:39,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:39,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:39,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:39,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:39,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:12:39,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:39,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:39,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:39,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:39,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:39,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:39,417 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:39,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:39,418 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:39,418 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:12:39,418 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:39,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:39,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:12:39,419 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:12:39,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:39,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:12:39,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:12:39,419 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:12:39,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:39,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:12:39,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:12:39,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:12:39,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:39,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:39,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:39,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:39,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:12:39,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:39,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:39,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:39,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:39,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:39,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:39,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:39,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:39,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:39,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:12:39,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:12:39,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:39,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:39,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:39,425 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7849780e572f4b715fd4a0599e2552ba9e578b3aff0bf5f111ebb8575b54953d [2021-11-20 23:12:39,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:39,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:39,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:39,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:39,691 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:39,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-fpi/ifeqn4f.c [2021-11-20 23:12:39,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/data/362de1ec3/95d1c29af2d242cb9dfb1a47eb3221cb/FLAGf6f66367b [2021-11-20 23:12:40,204 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:12:40,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/sv-benchmarks/c/array-fpi/ifeqn4f.c [2021-11-20 23:12:40,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/data/362de1ec3/95d1c29af2d242cb9dfb1a47eb3221cb/FLAGf6f66367b [2021-11-20 23:12:40,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/data/362de1ec3/95d1c29af2d242cb9dfb1a47eb3221cb [2021-11-20 23:12:40,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:12:40,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:12:40,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:40,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:12:40,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:12:40,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f57144d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40, skipping insertion in model container [2021-11-20 23:12:40,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:12:40,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:12:40,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/sv-benchmarks/c/array-fpi/ifeqn4f.c[590,603] [2021-11-20 23:12:40,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:40,838 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:12:40,849 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/sv-benchmarks/c/array-fpi/ifeqn4f.c[590,603] [2021-11-20 23:12:40,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:40,870 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:12:40,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40 WrapperNode [2021-11-20 23:12:40,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:40,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:40,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:12:40,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:12:40,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,905 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-20 23:12:40,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:40,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:12:40,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:12:40,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:12:40,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:12:40,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:12:40,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:12:40,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:12:40,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2021-11-20 23:12:40,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:40,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:12:40,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:12:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:12:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:12:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:12:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:12:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:12:41,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:12:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:12:41,085 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:12:41,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:12:41,229 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:12:41,287 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:12:41,288 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:12:41,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:41 BoogieIcfgContainer [2021-11-20 23:12:41,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:12:41,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:12:41,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:12:41,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:12:41,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:40" (1/3) ... [2021-11-20 23:12:41,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b75ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:41, skipping insertion in model container [2021-11-20 23:12:41,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (2/3) ... [2021-11-20 23:12:41,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b75ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:41, skipping insertion in model container [2021-11-20 23:12:41,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:41" (3/3) ... [2021-11-20 23:12:41,299 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2021-11-20 23:12:41,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:12:41,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:12:41,352 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:12:41,359 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:12:41,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:12:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:12:41,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:41,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:41,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1095923036, now seen corresponding path program 1 times [2021-11-20 23:12:41,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:41,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491638458] [2021-11-20 23:12:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:41,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:41,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491638458] [2021-11-20 23:12:41,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491638458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:41,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:41,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:12:41,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32566526] [2021-11-20 23:12:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:41,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:12:41,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:12:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:12:41,655 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:41,713 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-11-20 23:12:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:12:41,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 23:12:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:41,733 INFO L225 Difference]: With dead ends: 20 [2021-11-20 23:12:41,733 INFO L226 Difference]: Without dead ends: 10 [2021-11-20 23:12:41,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:12:41,740 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:41,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:12:41,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-20 23:12:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-20 23:12:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-20 23:12:41,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-11-20 23:12:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:41,794 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-20 23:12:41,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-20 23:12:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:12:41,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:41,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:41,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:12:41,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash 255696374, now seen corresponding path program 1 times [2021-11-20 23:12:41,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:41,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137117013] [2021-11-20 23:12:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:41,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:41,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:12:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674337714] [2021-11-20 23:12:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:41,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:41,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:12:41,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:12:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:41,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:12:41,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:12:42,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:12:42,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137117013] [2021-11-20 23:12:42,005 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:12:42,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674337714] [2021-11-20 23:12:42,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674337714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:42,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:42,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:12:42,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713726369] [2021-11-20 23:12:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:42,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:12:42,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:12:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:12:42,008 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:42,037 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-11-20 23:12:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:12:42,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:12:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:42,038 INFO L225 Difference]: With dead ends: 21 [2021-11-20 23:12:42,039 INFO L226 Difference]: Without dead ends: 16 [2021-11-20 23:12:42,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:12:42,041 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:42,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 6 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:12:42,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-20 23:12:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-11-20 23:12:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-20 23:12:42,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-11-20 23:12:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:42,046 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-20 23:12:42,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-20 23:12:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:12:42,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:42,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:42,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:12:42,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:42,258 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash -652476163, now seen corresponding path program 1 times [2021-11-20 23:12:42,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:42,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433132785] [2021-11-20 23:12:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:42,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:42,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:12:42,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822023634] [2021-11-20 23:12:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:42,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:42,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:12:42,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:12:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:42,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:12:42,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:42,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:12:42,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:12:42,878 INFO L354 Elim1Store]: treesize reduction 150, result has 42.3 percent of original size [2021-11-20 23:12:42,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 143 [2021-11-20 23:12:43,140 INFO L354 Elim1Store]: treesize reduction 23, result has 54.9 percent of original size [2021-11-20 23:12:43,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 93 [2021-11-20 23:12:43,257 INFO L354 Elim1Store]: treesize reduction 48, result has 52.0 percent of original size [2021-11-20 23:12:43,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 75 [2021-11-20 23:12:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:12:43,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:43,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433132785] [2021-11-20 23:12:43,330 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:12:43,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822023634] [2021-11-20 23:12:43,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822023634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:12:43,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1447568357] [2021-11-20 23:12:43,357 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-20 23:12:43,358 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:12:43,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:12:43,369 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:12:43,370 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:12:43,570 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-20 23:12:43,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-20 23:12:43,810 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-20 23:12:43,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-20 23:12:43,970 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:12:43,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:44,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,113 INFO L354 Elim1Store]: treesize reduction 80, result has 13.0 percent of original size [2021-11-20 23:12:44,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 83 [2021-11-20 23:12:44,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:44,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 18 [2021-11-20 23:12:44,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 20 [2021-11-20 23:12:44,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:44,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-11-20 23:12:44,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:44,607 INFO L354 Elim1Store]: treesize reduction 143, result has 14.9 percent of original size [2021-11-20 23:12:44,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 110 [2021-11-20 23:12:44,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:44,686 INFO L354 Elim1Store]: treesize reduction 29, result has 25.6 percent of original size [2021-11-20 23:12:44,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 38 [2021-11-20 23:12:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:44,788 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:12:44,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 30 [2021-11-20 23:12:44,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:44,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:44,940 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:12:44,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2021-11-20 23:12:44,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:45,261 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:12:45,525 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:12:45,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:12:45,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-11-20 23:12:45,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994107488] [2021-11-20 23:12:45,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:12:45,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:12:45,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:12:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:12:45,528 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:45,621 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-11-20 23:12:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:12:45,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 23:12:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:45,623 INFO L225 Difference]: With dead ends: 17 [2021-11-20 23:12:45,623 INFO L226 Difference]: Without dead ends: 15 [2021-11-20 23:12:45,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:12:45,625 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:45,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:12:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-20 23:12:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-20 23:12:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-20 23:12:45,630 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-11-20 23:12:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:45,630 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-20 23:12:45,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-20 23:12:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 23:12:45,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:45,632 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:45,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:12:45,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:45,846 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1109733911, now seen corresponding path program 1 times [2021-11-20 23:12:45,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:45,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889122587] [2021-11-20 23:12:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:45,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:45,866 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:12:45,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303896131] [2021-11-20 23:12:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:45,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:45,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:45,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:12:45,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:12:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:45,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:12:45,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:12:46,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:12:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:12:46,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:46,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889122587] [2021-11-20 23:12:46,074 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:12:46,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303896131] [2021-11-20 23:12:46,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303896131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:12:46,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1578322338] [2021-11-20 23:12:46,077 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-20 23:12:46,077 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:12:46,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:12:46,078 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:12:46,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:12:46,276 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-20 23:12:46,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-20 23:12:46,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-11-20 23:12:46,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:12:46,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:46,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:46,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:46,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:46,759 INFO L354 Elim1Store]: treesize reduction 156, result has 14.8 percent of original size [2021-11-20 23:12:46,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 325 treesize of output 346 [2021-11-20 23:12:47,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:47,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:47,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 32 [2021-11-20 23:12:47,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:47,296 INFO L354 Elim1Store]: treesize reduction 36, result has 7.7 percent of original size [2021-11-20 23:12:47,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 242 treesize of output 208 [2021-11-20 23:12:47,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:47,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-11-20 23:12:47,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:48,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:48,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:48,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:48,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:48,181 INFO L354 Elim1Store]: treesize reduction 143, result has 14.9 percent of original size [2021-11-20 23:12:48,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 107 [2021-11-20 23:12:48,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:48,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:48,268 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:12:48,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 54 [2021-11-20 23:12:48,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:48,335 INFO L354 Elim1Store]: treesize reduction 29, result has 25.6 percent of original size [2021-11-20 23:12:48,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 67 [2021-11-20 23:12:48,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:12:48,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:48,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:48,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:48,502 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:12:48,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2021-11-20 23:12:49,333 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:12:49,755 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:12:49,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:12:49,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-20 23:12:49,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077338387] [2021-11-20 23:12:49,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:12:49,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:12:49,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:49,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:12:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:12:49,757 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:49,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:49,854 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-11-20 23:12:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:12:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 23:12:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:49,856 INFO L225 Difference]: With dead ends: 35 [2021-11-20 23:12:49,856 INFO L226 Difference]: Without dead ends: 21 [2021-11-20 23:12:49,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:12:49,857 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:49,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:12:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-20 23:12:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-11-20 23:12:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-20 23:12:49,862 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-11-20 23:12:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:49,862 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-20 23:12:49,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-20 23:12:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:12:49,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:49,864 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:49,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:12:50,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:50,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 221349744, now seen corresponding path program 2 times [2021-11-20 23:12:50,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:50,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389252481] [2021-11-20 23:12:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:50,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:50,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:12:50,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488253979] [2021-11-20 23:12:50,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:12:50,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:50,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:50,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:12:50,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:12:50,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 23:12:50,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-20 23:12:50,185 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:12:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:12:50,232 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:12:50,232 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:12:50,233 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:12:50,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-20 23:12:50,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:50,438 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-11-20 23:12:50,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:12:50,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:12:50 BoogieIcfgContainer [2021-11-20 23:12:50,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:12:50,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:12:50,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:12:50,470 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:12:50,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:41" (3/4) ... [2021-11-20 23:12:50,473 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 23:12:50,535 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb5f6e0-73ed-459e-b058-2fc8feb076fa/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:12:50,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:12:50,536 INFO L158 Benchmark]: Toolchain (without parser) took 9941.23ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 69.3MB in the beginning and 85.1MB in the end (delta: -15.8MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,537 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:50,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.64ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 77.7MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.78ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 76.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:50,539 INFO L158 Benchmark]: Boogie Preprocessor took 23.42ms. Allocated memory is still 102.8MB. Free memory was 76.1MB in the beginning and 74.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,540 INFO L158 Benchmark]: RCFGBuilder took 360.55ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 62.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,540 INFO L158 Benchmark]: TraceAbstraction took 9177.53ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 61.7MB in the beginning and 87.2MB in the end (delta: -25.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,541 INFO L158 Benchmark]: Witness Printer took 65.23ms. Allocated memory is still 155.2MB. Free memory was 87.2MB in the beginning and 85.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.64ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 77.7MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.78ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 76.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.42ms. Allocated memory is still 102.8MB. Free memory was 76.1MB in the beginning and 74.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 360.55ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 62.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9177.53ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 61.7MB in the beginning and 87.2MB in the end (delta: -25.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 65.23ms. Allocated memory is still 155.2MB. Free memory was 87.2MB in the beginning and 85.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [a={-2:0}, b={-1:0}, i=0, N=2] [L31] COND TRUE i