./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:30:06,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:30:06,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:30:06,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:30:06,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:30:06,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:30:06,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:30:06,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:30:06,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:30:06,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:30:06,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:30:06,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:30:06,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:30:06,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:30:06,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:30:06,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:30:06,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:30:06,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:30:06,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:30:06,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:30:06,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:30:06,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:30:06,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:30:06,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:30:06,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:30:06,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:30:06,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:30:06,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:30:06,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:30:06,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:30:06,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:30:06,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:30:06,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:30:06,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:30:06,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:30:06,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:30:06,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:30:06,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:30:06,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:30:06,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:30:06,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:30:06,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:30:06,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:30:06,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:30:06,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:30:06,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:30:06,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:30:06,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:30:06,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:30:06,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:30:06,440 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:30:06,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:30:06,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:30:06,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:30:06,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:30:06,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:30:06,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:30:06,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:30:06,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:30:06,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:30:06,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:30:06,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:30:06,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:30:06,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:30:06,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:30:06,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:30:06,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:30:06,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:30:06,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:30:06,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:30:06,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:30:06,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:30:06,448 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:30:06,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:30:06,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:30:06,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2022-11-16 11:30:06,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:30:06,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:30:06,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:30:06,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:30:06,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:30:06,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2022-11-16 11:30:06,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/data/798f0db4d/b0a1435cb13b4f77a021e0759938775f/FLAGca9d7880a [2022-11-16 11:30:07,610 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:30:07,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2022-11-16 11:30:07,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/data/798f0db4d/b0a1435cb13b4f77a021e0759938775f/FLAGca9d7880a [2022-11-16 11:30:07,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/data/798f0db4d/b0a1435cb13b4f77a021e0759938775f [2022-11-16 11:30:07,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:30:07,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:30:07,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:30:07,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:30:07,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:30:07,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:30:07" (1/1) ... [2022-11-16 11:30:07,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b65e52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:07, skipping insertion in model container [2022-11-16 11:30:07,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:30:07" (1/1) ... [2022-11-16 11:30:07,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:30:08,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:30:08,297 WARN L229 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_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2022-11-16 11:30:08,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:30:08,337 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:30:08,354 WARN L229 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_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2022-11-16 11:30:08,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:30:08,395 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:30:08,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08 WrapperNode [2022-11-16 11:30:08,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:30:08,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:30:08,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:30:08,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:30:08,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,448 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-11-16 11:30:08,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:30:08,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:30:08,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:30:08,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:30:08,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,500 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:30:08,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:30:08,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:30:08,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:30:08,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (1/1) ... [2022-11-16 11:30:08,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:30:08,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:08,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:30:08,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:30:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:30:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:30:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:30:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:30:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:30:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:30:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:30:08,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:30:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:30:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:30:08,734 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:30:08,736 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:30:08,995 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:30:09,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:30:09,003 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:30:09,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:30:09 BoogieIcfgContainer [2022-11-16 11:30:09,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:30:09,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:30:09,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:30:09,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:30:09,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:30:07" (1/3) ... [2022-11-16 11:30:09,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602f6aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:30:09, skipping insertion in model container [2022-11-16 11:30:09,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:08" (2/3) ... [2022-11-16 11:30:09,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602f6aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:30:09, skipping insertion in model container [2022-11-16 11:30:09,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:30:09" (3/3) ... [2022-11-16 11:30:09,028 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2022-11-16 11:30:09,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:30:09,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:30:09,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:30:09,116 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1717dc60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:30:09,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:30:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:30:09,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:09,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:09,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:30:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1700606493, now seen corresponding path program 1 times [2022-11-16 11:30:09,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:09,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587694710] [2022-11-16 11:30:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:30:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:30:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:30:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:09,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587694710] [2022-11-16 11:30:09,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587694710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:09,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:09,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:09,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549922980] [2022-11-16 11:30:09,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:09,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:30:09,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:30:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:30:09,420 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:09,447 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2022-11-16 11:30:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:30:09,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-16 11:30:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:09,469 INFO L225 Difference]: With dead ends: 41 [2022-11-16 11:30:09,469 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 11:30:09,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:30:09,477 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:09,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:30:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 11:30:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-16 11:30:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:09,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-16 11:30:09,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 18 [2022-11-16 11:30:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:09,536 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-16 11:30:09,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:09,538 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-16 11:30:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:30:09,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:09,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:09,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:30:09,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:30:09,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:09,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1364006487, now seen corresponding path program 1 times [2022-11-16 11:30:09,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:09,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761841335] [2022-11-16 11:30:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:09,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:30:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:30:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:30:09,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:09,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761841335] [2022-11-16 11:30:09,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761841335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:09,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:09,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:30:09,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744900411] [2022-11-16 11:30:09,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:09,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:30:09,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:09,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:30:09,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:30:09,814 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:30:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:09,873 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-11-16 11:30:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:30:09,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-16 11:30:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:09,875 INFO L225 Difference]: With dead ends: 34 [2022-11-16 11:30:09,876 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 11:30:09,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:30:09,878 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:09,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:30:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 11:30:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2022-11-16 11:30:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-16 11:30:09,922 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2022-11-16 11:30:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:09,924 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-16 11:30:09,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:30:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-16 11:30:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 11:30:09,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:09,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:09,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:30:09,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:30:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:09,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1804375691, now seen corresponding path program 1 times [2022-11-16 11:30:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:09,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216366188] [2022-11-16 11:30:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:09,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:30:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:30:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:30:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:10,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216366188] [2022-11-16 11:30:10,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216366188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:30:10,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500728546] [2022-11-16 11:30:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:10,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:30:10,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:10,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:30:10,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:30:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:10,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:30:10,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:30:10,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:30:10,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500728546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:30:10,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:30:10,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-16 11:30:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372018471] [2022-11-16 11:30:10,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:30:10,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:30:10,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:10,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:30:10,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:30:10,691 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:10,821 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-16 11:30:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:30:10,822 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-11-16 11:30:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:10,823 INFO L225 Difference]: With dead ends: 41 [2022-11-16 11:30:10,824 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 11:30:10,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:30:10,826 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:10,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 49 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:30:10,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 11:30:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2022-11-16 11:30:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-16 11:30:10,835 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2022-11-16 11:30:10,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:10,835 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-16 11:30:10,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:30:10,836 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-16 11:30:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:30:10,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:10,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:10,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:30:11,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:30:11,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:30:11,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1487835885, now seen corresponding path program 2 times [2022-11-16 11:30:11,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:11,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315979799] [2022-11-16 11:30:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:30:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:30:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:30:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315979799] [2022-11-16 11:30:11,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315979799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:30:11,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398461114] [2022-11-16 11:30:11,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:30:11,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:30:11,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:11,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:30:12,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab3597b-3666-4bf9-b54d-9ef4b99ad411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:30:12,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:30:12,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:30:12,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:30:12,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:12,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:30:12,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:12,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:12,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2022-11-16 11:30:12,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:12,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:12,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:12,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 44 [2022-11-16 11:30:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:30:12,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:12,975 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:30:12,977 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 72288 treesize of output 68968 [2022-11-16 11:30:13,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68960 treesize of output 65504