./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn1f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn1f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55ee4b95b80c9eebb60e8b0eba56566adf80c74f9addd2fea6f7bbea2c0e0a47 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:04:06,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:04:06,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:04:06,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:04:06,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:04:06,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:04:06,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:04:06,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:04:06,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:04:06,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:04:06,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:04:06,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:04:06,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:04:06,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:04:06,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:04:06,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:04:06,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:04:06,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:04:06,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:04:06,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:04:06,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:04:06,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:04:06,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:04:06,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:04:06,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:04:06,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:04:06,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:04:06,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:04:06,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:04:06,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:04:06,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:04:06,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:04:06,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:04:06,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:04:06,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:04:06,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:04:06,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:04:06,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:04:06,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:04:06,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:04:06,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:04:06,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:04:06,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:04:06,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:04:06,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:04:06,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:04:06,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:04:06,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:04:06,377 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:04:06,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:04:06,378 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:04:06,378 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:04:06,378 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:04:06,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:04:06,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:04:06,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:04:06,379 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:04:06,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:04:06,380 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:04:06,380 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:04:06,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:04:06,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:04:06,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:04:06,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:04:06,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:04:06,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:04:06,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:04:06,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:04:06,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:04:06,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:04:06,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:04:06,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:04:06,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:04:06,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:04:06,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:04:06,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:04:06,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:04:06,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:04:06,385 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:04:06,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:04:06,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:04:06,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:04:06,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:04:06,386 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_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55ee4b95b80c9eebb60e8b0eba56566adf80c74f9addd2fea6f7bbea2c0e0a47 [2021-11-23 03:04:06,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:04:06,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:04:06,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:04:06,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:04:06,716 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:04:06,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/array-fpi/ifeqn1f.c [2021-11-23 03:04:06,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/data/02a1af310/af344d0990f648c8b52d21acae2fbb71/FLAGf7ee8ea3c [2021-11-23 03:04:07,268 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:04:07,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/sv-benchmarks/c/array-fpi/ifeqn1f.c [2021-11-23 03:04:07,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/data/02a1af310/af344d0990f648c8b52d21acae2fbb71/FLAGf7ee8ea3c [2021-11-23 03:04:07,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/data/02a1af310/af344d0990f648c8b52d21acae2fbb71 [2021-11-23 03:04:07,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:04:07,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:04:07,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:04:07,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:04:07,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:04:07,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:07" (1/1) ... [2021-11-23 03:04:07,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5c1b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:07, skipping insertion in model container [2021-11-23 03:04:07,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:07" (1/1) ... [2021-11-23 03:04:07,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:04:07,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:04:07,945 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_594ef23f-a2d6-4e6c-8761-b191a0c800ab/sv-benchmarks/c/array-fpi/ifeqn1f.c[590,603] [2021-11-23 03:04:07,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:04:07,977 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:04:07,991 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_594ef23f-a2d6-4e6c-8761-b191a0c800ab/sv-benchmarks/c/array-fpi/ifeqn1f.c[590,603] [2021-11-23 03:04:08,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:04:08,015 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:04:08,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08 WrapperNode [2021-11-23 03:04:08,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:04:08,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:04:08,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:04:08,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:04:08,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,061 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-23 03:04:08,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:04:08,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:04:08,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:04:08,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:04:08,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:04:08,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:04:08,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:04:08,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:04:08,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (1/1) ... [2021-11-23 03:04:08,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:04:08,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:04:08,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:04:08,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:04:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:04:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:04:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:04:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:04:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:04:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:04:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:04:08,292 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:04:08,294 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:04:08,488 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:04:08,529 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:04:08,529 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 03:04:08,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:08 BoogieIcfgContainer [2021-11-23 03:04:08,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:04:08,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:04:08,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:04:08,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:04:08,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:04:07" (1/3) ... [2021-11-23 03:04:08,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eb15da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:08, skipping insertion in model container [2021-11-23 03:04:08,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:08" (2/3) ... [2021-11-23 03:04:08,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eb15da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:08, skipping insertion in model container [2021-11-23 03:04:08,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:08" (3/3) ... [2021-11-23 03:04:08,540 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1f.c [2021-11-23 03:04:08,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:04:08,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:04:08,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:04:08,603 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:04:08,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:04:08,635 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) [2021-11-23 03:04:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:04:08,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:08,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:08,646 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:04:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1095923036, now seen corresponding path program 1 times [2021-11-23 03:04:08,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:08,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810157246] [2021-11-23 03:04:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:08,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:04:08,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:08,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810157246] [2021-11-23 03:04:08,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810157246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:08,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:08,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:04:08,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201345668] [2021-11-23 03:04:08,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:08,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:04:08,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:04:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:04:08,877 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) [2021-11-23 03:04:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:04:08,977 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-11-23 03:04:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:04:08,980 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 [2021-11-23 03:04:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:04:08,989 INFO L225 Difference]: With dead ends: 20 [2021-11-23 03:04:08,989 INFO L226 Difference]: Without dead ends: 10 [2021-11-23 03:04:08,992 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 [2021-11-23 03:04:08,996 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:04:08,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:04:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-23 03:04:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-23 03:04:09,052 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) [2021-11-23 03:04:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-23 03:04:09,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-11-23 03:04:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:04:09,055 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-23 03:04:09,055 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) [2021-11-23 03:04:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-23 03:04:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:04:09,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:09,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:09,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:04:09,057 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:04:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 255696374, now seen corresponding path program 1 times [2021-11-23 03:04:09,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:09,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948630385] [2021-11-23 03:04:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:09,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:09,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:04:09,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496916348] [2021-11-23 03:04:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:09,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:04:09,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:04:09,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:04:09,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:04:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:09,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:04:09,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:04:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:04:09,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:04:09,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:09,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948630385] [2021-11-23 03:04:09,259 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:04:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496916348] [2021-11-23 03:04:09,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496916348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:09,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:09,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:04:09,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301856584] [2021-11-23 03:04:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:09,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:04:09,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:04:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:04:09,264 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) [2021-11-23 03:04:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:04:09,294 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-11-23 03:04:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:04:09,295 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 [2021-11-23 03:04:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:04:09,296 INFO L225 Difference]: With dead ends: 21 [2021-11-23 03:04:09,296 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 03:04:09,297 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 [2021-11-23 03:04:09,299 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 [2021-11-23 03:04:09,300 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] [2021-11-23 03:04:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 03:04:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-11-23 03:04:09,304 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) [2021-11-23 03:04:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-23 03:04:09,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-11-23 03:04:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:04:09,306 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-23 03:04:09,306 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) [2021-11-23 03:04:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-23 03:04:09,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:04:09,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:09,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:09,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:04:09,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:04:09,529 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:04:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -652476163, now seen corresponding path program 1 times [2021-11-23 03:04:09,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027688242] [2021-11-23 03:04:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:09,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:09,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:04:09,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890370262] [2021-11-23 03:04:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:09,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:04:09,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:04:09,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:04:09,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:04:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:04:09,663 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:04:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:04:09,710 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:04:09,711 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:04:09,712 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:04:09,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:04:09,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:04:09,945 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 03:04:09,948 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:04:09,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:04:09 BoogieIcfgContainer [2021-11-23 03:04:09,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:04:09,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:04:09,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:04:09,974 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:04:09,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:08" (3/4) ... [2021-11-23 03:04:09,976 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:04:10,023 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_594ef23f-a2d6-4e6c-8761-b191a0c800ab/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:04:10,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:04:10,024 INFO L158 Benchmark]: Toolchain (without parser) took 2360.69ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 52.4MB in the beginning and 83.0MB in the end (delta: -30.6MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-11-23 03:04:10,034 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 94.4MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:04:10,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.03ms. Allocated memory is still 94.4MB. Free memory was 52.2MB in the beginning and 68.4MB in the end (delta: -16.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:04:10,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.89ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 66.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:04:10,038 INFO L158 Benchmark]: Boogie Preprocessor took 29.36ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 65.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:04:10,039 INFO L158 Benchmark]: RCFGBuilder took 438.85ms. Allocated memory is still 94.4MB. Free memory was 65.4MB in the beginning and 52.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:04:10,040 INFO L158 Benchmark]: TraceAbstraction took 1438.82ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 52.2MB in the beginning and 85.1MB in the end (delta: -32.9MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2021-11-23 03:04:10,040 INFO L158 Benchmark]: Witness Printer took 50.32ms. Allocated memory is still 127.9MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:04:10,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 94.4MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.03ms. Allocated memory is still 94.4MB. Free memory was 52.2MB in the beginning and 68.4MB in the end (delta: -16.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.89ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 66.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.36ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 65.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 438.85ms. Allocated memory is still 94.4MB. Free memory was 65.4MB in the beginning and 52.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1438.82ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 52.2MB in the beginning and 85.1MB in the end (delta: -32.9MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Witness Printer took 50.32ms. Allocated memory is still 127.9MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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={-1:0}, b={-2:0}, i=0, N=1] [L31] COND TRUE i