./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 7e049f39696e0e2fc7054b0acc87989611b1a924bf2e3afb40163a5b9343b74f --- 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-5e519f3 [2022-11-02 20:42:42,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:42:42,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:42:42,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:42:42,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:42:42,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:42:42,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:42:42,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:42:42,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:42:42,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:42:42,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:42:42,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:42:42,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:42:42,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:42:42,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:42:42,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:42:42,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:42:42,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:42:42,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:42:42,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:42:42,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:42:42,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:42:42,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:42:42,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:42:42,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:42:42,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:42:42,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:42:42,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:42:42,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:42:42,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:42:42,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:42:42,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:42:42,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:42:42,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:42:42,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:42:42,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:42:42,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:42:42,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:42:42,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:42:42,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:42:42,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:42:42,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:42:42,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:42:42,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:42:42,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:42:42,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:42:42,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:42:42,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:42:42,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:42:42,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:42:42,402 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:42:42,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:42:42,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:42:42,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:42:42,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:42:42,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:42:42,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:42:42,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:42:42,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:42:42,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:42:42,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:42:42,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:42:42,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:42:42,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:42,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:42:42,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:42:42,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:42:42,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:42:42,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:42:42,408 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:42:42,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:42:42,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:42:42,409 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_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e049f39696e0e2fc7054b0acc87989611b1a924bf2e3afb40163a5b9343b74f [2022-11-02 20:42:42,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:42:42,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:42:42,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:42:42,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:42:42,742 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:42:42,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2022-11-02 20:42:42,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/90e9b05dc/0e1d62f531c541e297c63a2a2872e4fb/FLAG826f3bb2b [2022-11-02 20:42:43,355 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:42:43,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2022-11-02 20:42:43,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/90e9b05dc/0e1d62f531c541e297c63a2a2872e4fb/FLAG826f3bb2b [2022-11-02 20:42:43,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/90e9b05dc/0e1d62f531c541e297c63a2a2872e4fb [2022-11-02 20:42:43,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:42:43,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:42:43,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:43,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:42:43,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:42:43,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:43" (1/1) ... [2022-11-02 20:42:43,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d358235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:43, skipping insertion in model container [2022-11-02 20:42:43,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:43" (1/1) ... [2022-11-02 20:42:43,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:42:43,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:42:43,945 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_e55168aa-5f1d-44f0-87da-f7b906df59d3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c[1107,1120] [2022-11-02 20:42:44,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:44,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:42:44,102 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_e55168aa-5f1d-44f0-87da-f7b906df59d3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c[1107,1120] [2022-11-02 20:42:44,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:44,175 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:42:44,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44 WrapperNode [2022-11-02 20:42:44,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:44,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:44,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:42:44,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:42:44,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,243 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-11-02 20:42:44,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:44,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:42:44,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:42:44,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:42:44,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:42:44,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:42:44,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:42:44,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:42:44,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (1/1) ... [2022-11-02 20:42:44,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:44,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:42:44,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:42:44,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:42:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:42:44,536 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:42:44,538 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:42:44,784 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:42:44,791 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:42:44,791 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:42:44,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:44 BoogieIcfgContainer [2022-11-02 20:42:44,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:42:44,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:42:44,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:42:44,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:42:44,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:42:43" (1/3) ... [2022-11-02 20:42:44,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b32e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:44, skipping insertion in model container [2022-11-02 20:42:44,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:44" (2/3) ... [2022-11-02 20:42:44,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b32e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:44, skipping insertion in model container [2022-11-02 20:42:44,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:44" (3/3) ... [2022-11-02 20:42:44,810 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2022-11-02 20:42:44,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:42:44,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:42:44,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:44,889 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;@5122565a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:44,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:42:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-02 20:42:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:42:44,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:44,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:42:44,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:44,910 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:42:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:44,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752237688] [2022-11-02 20:42:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:45,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:45,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:42:45,408 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:42:45,410 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:42:45,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:42:45,421 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:42:45,426 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:42:45,467 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:42:45,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:42:45 BoogieIcfgContainer [2022-11-02 20:42:45,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:42:45,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:42:45,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:42:45,486 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:42:45,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:44" (3/4) ... [2022-11-02 20:42:45,493 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:42:45,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:42:45,494 INFO L158 Benchmark]: Toolchain (without parser) took 1750.25ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 48.5MB in the end (delta: 34.3MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2022-11-02 20:42:45,497 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 56.0MB in the beginning and 55.9MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:42:45,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.10ms. Allocated memory is still 117.4MB. Free memory was 82.6MB in the beginning and 94.0MB in the end (delta: -11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:42:45,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.56ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 91.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:42:45,500 INFO L158 Benchmark]: Boogie Preprocessor took 46.31ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:42:45,506 INFO L158 Benchmark]: RCFGBuilder took 502.72ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 74.2MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 20:42:45,507 INFO L158 Benchmark]: TraceAbstraction took 678.15ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 49.1MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-02 20:42:45,509 INFO L158 Benchmark]: Witness Printer took 7.88ms. Allocated memory is still 117.4MB. Free memory was 49.1MB in the beginning and 48.5MB in the end (delta: 645.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:42:45,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 56.0MB in the beginning and 55.9MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.10ms. Allocated memory is still 117.4MB. Free memory was 82.6MB in the beginning and 94.0MB in the end (delta: -11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.56ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 91.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.31ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 502.72ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 74.2MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 678.15ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 49.1MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 7.88ms. Allocated memory is still 117.4MB. Free memory was 49.1MB in the beginning and 48.5MB in the end (delta: 645.4kB). There was no memory consumed. 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 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 88, overapproximation of bitwiseOr at line 97, overapproximation of bitwiseAnd at line 91. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 3); [L32] const SORT_6 msb_SORT_6 = (SORT_6)1 << (3 - 1); [L34] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 2); [L35] const SORT_12 msb_SORT_12 = (SORT_12)1 << (2 - 1); [L37] const SORT_35 mask_SORT_35 = (SORT_35)-1 >> (sizeof(SORT_35) * 8 - 12); [L38] const SORT_35 msb_SORT_35 = (SORT_35)1 << (12 - 1); [L40] const SORT_6 var_7 = 0; [L41] const SORT_12 var_14 = 0; [L42] const SORT_1 var_19 = 1; [L43] const SORT_6 var_49 = 1; [L44] const SORT_6 var_51 = 4; [L46] SORT_1 input_2; [L47] SORT_3 input_4; [L48] SORT_3 input_5; [L49] SORT_3 input_23; [L50] SORT_3 input_25; [L51] SORT_3 input_27; [L52] SORT_1 input_29; [L53] SORT_3 input_31; [L54] SORT_3 input_33; [L55] SORT_35 input_36; [L56] SORT_35 input_38; [L57] SORT_3 input_40; [L58] SORT_3 input_42; [L59] SORT_3 input_44; [L60] SORT_3 input_46; [L62] SORT_6 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L64] SORT_6 init_9_arg_1 = var_7; [L65] state_8 = init_9_arg_1 VAL [init_9_arg_1=0, mask_SORT_1=1, mask_SORT_12=3, mask_SORT_3=65535, mask_SORT_35=4095, mask_SORT_6=7, msb_SORT_1=1, msb_SORT_12=2, msb_SORT_3=32768, msb_SORT_35=2048, msb_SORT_6=4, state_8=0, var_14=0, var_19=1, var_49=1, var_51=4, var_7=0] [L68] input_2 = __VERIFIER_nondet_uchar() [L69] input_4 = __VERIFIER_nondet_ushort() [L70] input_5 = __VERIFIER_nondet_ushort() [L71] input_23 = __VERIFIER_nondet_ushort() [L72] input_25 = __VERIFIER_nondet_ushort() [L73] input_27 = __VERIFIER_nondet_ushort() [L74] input_29 = __VERIFIER_nondet_uchar() [L75] input_31 = __VERIFIER_nondet_ushort() [L76] input_33 = __VERIFIER_nondet_ushort() [L77] input_36 = __VERIFIER_nondet_ushort() [L78] input_38 = __VERIFIER_nondet_ushort() [L79] input_40 = __VERIFIER_nondet_ushort() [L80] input_42 = __VERIFIER_nondet_ushort() [L81] input_44 = __VERIFIER_nondet_ushort() [L82] input_46 = __VERIFIER_nondet_ushort() [L85] SORT_6 var_10_arg_0 = state_8; [L86] SORT_1 var_10 = var_10_arg_0 >> 2; [L87] SORT_1 var_11_arg_0 = var_10; [L88] SORT_1 var_11 = ~var_11_arg_0; [L89] SORT_6 var_13_arg_0 = state_8; [L90] SORT_12 var_13 = var_13_arg_0 >> 0; [L91] var_13 = var_13 & mask_SORT_12 [L92] SORT_12 var_15_arg_0 = var_13; [L93] SORT_12 var_15_arg_1 = var_14; [L94] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L95] SORT_1 var_16_arg_0 = var_11; [L96] SORT_1 var_16_arg_1 = var_15; [L97] SORT_1 var_16 = var_16_arg_0 | var_16_arg_1; [L98] SORT_1 var_20_arg_0 = var_16; [L99] SORT_1 var_20 = ~var_20_arg_0; [L100] SORT_1 var_21_arg_0 = var_19; [L101] SORT_1 var_21_arg_1 = var_20; [L102] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L103] var_21 = var_21 & mask_SORT_1 [L104] SORT_1 bad_22_arg_0 = var_21; [L105] CALL __VERIFIER_assert(!(bad_22_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:42:45,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 7e049f39696e0e2fc7054b0acc87989611b1a924bf2e3afb40163a5b9343b74f --- 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-5e519f3 [2022-11-02 20:42:48,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:42:48,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:42:48,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:42:48,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:42:48,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:42:48,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:42:48,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:42:48,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:42:48,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:42:48,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:42:48,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:42:48,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:42:48,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:42:48,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:42:48,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:42:48,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:42:48,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:42:48,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:42:48,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:42:48,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:42:48,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:42:48,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:42:48,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:42:48,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:42:48,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:42:48,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:42:48,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:42:48,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:42:48,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:42:48,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:42:48,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:42:48,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:42:48,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:42:48,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:42:48,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:42:48,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:42:48,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:42:48,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:42:48,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:42:48,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:42:48,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:42:48,220 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:42:48,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:42:48,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:42:48,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:42:48,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:42:48,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:42:48,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:42:48,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:42:48,224 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:42:48,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:42:48,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:42:48,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:42:48,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:42:48,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:42:48,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:42:48,225 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:42:48,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:42:48,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:42:48,226 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:42:48,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:42:48,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:42:48,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:42:48,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:42:48,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:48,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:42:48,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:42:48,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:42:48,229 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:42:48,229 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:42:48,229 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:42:48,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:42:48,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:42:48,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:42:48,230 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e049f39696e0e2fc7054b0acc87989611b1a924bf2e3afb40163a5b9343b74f [2022-11-02 20:42:48,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:42:48,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:42:48,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:42:48,655 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:42:48,656 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:42:48,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2022-11-02 20:42:48,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/1700739c5/8a0e32bef98741368b6c84dad8d8c25e/FLAG7be7f26ad [2022-11-02 20:42:49,418 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:42:49,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2022-11-02 20:42:49,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/1700739c5/8a0e32bef98741368b6c84dad8d8c25e/FLAG7be7f26ad [2022-11-02 20:42:49,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/data/1700739c5/8a0e32bef98741368b6c84dad8d8c25e [2022-11-02 20:42:49,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:42:49,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:42:49,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:49,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:42:49,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:42:49,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:49" (1/1) ... [2022-11-02 20:42:49,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9fd188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:49, skipping insertion in model container [2022-11-02 20:42:49,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:49" (1/1) ... [2022-11-02 20:42:49,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:42:49,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:42:49,935 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_e55168aa-5f1d-44f0-87da-f7b906df59d3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c[1107,1120] [2022-11-02 20:42:49,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:49,995 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:42:50,025 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_e55168aa-5f1d-44f0-87da-f7b906df59d3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c[1107,1120] [2022-11-02 20:42:50,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:50,155 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:42:50,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50 WrapperNode [2022-11-02 20:42:50,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:50,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:50,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:42:50,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:42:50,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,211 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-11-02 20:42:50,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:50,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:42:50,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:42:50,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:42:50,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:42:50,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:42:50,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:42:50,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:42:50,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (1/1) ... [2022-11-02 20:42:50,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:50,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:42:50,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:42:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:42:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:42:50,463 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:42:50,466 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:42:50,754 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:42:50,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:42:50,763 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:42:50,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:50 BoogieIcfgContainer [2022-11-02 20:42:50,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:42:50,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:42:50,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:42:50,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:42:50,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:42:49" (1/3) ... [2022-11-02 20:42:50,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c3bd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:50, skipping insertion in model container [2022-11-02 20:42:50,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:50" (2/3) ... [2022-11-02 20:42:50,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c3bd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:50, skipping insertion in model container [2022-11-02 20:42:50,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:50" (3/3) ... [2022-11-02 20:42:50,777 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2022-11-02 20:42:50,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:42:50,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:42:50,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:50,913 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;@6398480a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:50,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:42:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-02 20:42:50,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:42:50,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:50,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:42:50,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:50,941 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:42:50,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:50,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861761384] [2022-11-02 20:42:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:50,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:50,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:50,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:50,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:42:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:51,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:42:51,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:51,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:51,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861761384] [2022-11-02 20:42:51,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861761384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:51,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:51,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:42:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137289924] [2022-11-02 20:42:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:51,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:51,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:51,455 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:42:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:51,551 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2022-11-02 20:42:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:42:51,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-02 20:42:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:51,575 INFO L225 Difference]: With dead ends: 26 [2022-11-02 20:42:51,585 INFO L226 Difference]: Without dead ends: 15 [2022-11-02 20:42:51,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:51,597 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:51,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:42:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-02 20:42:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2022-11-02 20:42:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2022-11-02 20:42:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-02 20:42:51,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-11-02 20:42:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:51,650 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-02 20:42:51,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:42:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-02 20:42:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:42:51,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:51,652 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:51,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:51,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1478823361, now seen corresponding path program 1 times [2022-11-02 20:42:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:51,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190943077] [2022-11-02 20:42:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:51,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:51,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:51,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:51,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:42:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:52,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:42:52,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:52,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:52,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:52,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190943077] [2022-11-02 20:42:52,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190943077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:52,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:52,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:42:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949477756] [2022-11-02 20:42:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:52,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:52,150 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-02 20:42:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:52,211 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-02 20:42:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:42:52,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-11-02 20:42:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:52,214 INFO L225 Difference]: With dead ends: 27 [2022-11-02 20:42:52,214 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:42:52,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:52,218 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:52,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:42:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:42:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-02 20:42:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-11-02 20:42:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-02 20:42:52,237 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2022-11-02 20:42:52,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:52,238 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-02 20:42:52,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-02 20:42:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-02 20:42:52,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:42:52,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:52,246 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:52,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-02 20:42:52,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:52,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1476976319, now seen corresponding path program 1 times [2022-11-02 20:42:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:52,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940683951] [2022-11-02 20:42:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:52,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:52,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:52,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:42:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:52,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:42:52,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:52,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:53,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:53,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940683951] [2022-11-02 20:42:53,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940683951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:53,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:53,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 20:42:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398576157] [2022-11-02 20:42:53,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:53,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:42:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:42:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:42:53,123 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2022-11-02 20:42:53,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:53,275 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-11-02 20:42:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:42:53,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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 10 [2022-11-02 20:42:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:53,278 INFO L225 Difference]: With dead ends: 22 [2022-11-02 20:42:53,278 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:42:53,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:42:53,284 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:53,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 47 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-02 20:42:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:42:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-11-02 20:42:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-02 20:42:53,295 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-11-02 20:42:53,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:53,295 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-02 20:42:53,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2022-11-02 20:42:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-02 20:42:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:42:53,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:53,297 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:53,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:53,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:53,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1952945017, now seen corresponding path program 1 times [2022-11-02 20:42:53,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:53,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185762366] [2022-11-02 20:42:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:53,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:53,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:53,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:53,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:42:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:53,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:42:53,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:53,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:53,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:53,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185762366] [2022-11-02 20:42:53,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185762366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:53,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:53,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 20:42:53,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119707228] [2022-11-02 20:42:53,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:53,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:42:53,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:53,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:42:53,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:53,993 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-02 20:42:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:54,100 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-02 20:42:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:42:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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 15 [2022-11-02 20:42:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:54,102 INFO L225 Difference]: With dead ends: 28 [2022-11-02 20:42:54,102 INFO L226 Difference]: Without dead ends: 21 [2022-11-02 20:42:54,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:42:54,103 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:54,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 20:42:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-02 20:42:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-11-02 20:42:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-11-02 20:42:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-02 20:42:54,109 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2022-11-02 20:42:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:54,110 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-02 20:42:54,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-02 20:42:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-02 20:42:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:42:54,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:54,111 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:42:54,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:54,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:54,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:54,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:54,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1951097975, now seen corresponding path program 2 times [2022-11-02 20:42:54,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:54,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305388065] [2022-11-02 20:42:54,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:42:54,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:54,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:54,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:54,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:42:54,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:42:54,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:54,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 20:42:54,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:54,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:55,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:55,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305388065] [2022-11-02 20:42:55,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305388065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:55,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:55,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:42:55,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162945650] [2022-11-02 20:42:55,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:55,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:42:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:42:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:42:55,357 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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) [2022-11-02 20:42:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:56,079 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-02 20:42:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:42:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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 15 [2022-11-02 20:42:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:56,087 INFO L225 Difference]: With dead ends: 29 [2022-11-02 20:42:56,087 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:42:56,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:42:56,088 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:56,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 60 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 89 Unchecked, 0.1s Time] [2022-11-02 20:42:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:42:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-11-02 20:42:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-02 20:42:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-02 20:42:56,096 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2022-11-02 20:42:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:56,097 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-02 20:42:56,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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) [2022-11-02 20:42:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-02 20:42:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:42:56,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:56,098 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2022-11-02 20:42:56,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:56,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:56,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash 538189631, now seen corresponding path program 2 times [2022-11-02 20:42:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:56,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468303369] [2022-11-02 20:42:56,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:42:56,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:56,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:56,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:42:56,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:42:56,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:56,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:42:56,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:56,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:57,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:57,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468303369] [2022-11-02 20:42:57,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468303369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:57,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:57,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 20:42:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430550463] [2022-11-02 20:42:57,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:57,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:42:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:42:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:42:57,183 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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) [2022-11-02 20:42:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:57,781 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-11-02 20:42:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:42:57,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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 20 [2022-11-02 20:42:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:57,783 INFO L225 Difference]: With dead ends: 42 [2022-11-02 20:42:57,783 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 20:42:57,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:42:57,785 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:57,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 84 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-11-02 20:42:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 20:42:57,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-02 20:42:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 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) [2022-11-02 20:42:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-02 20:42:57,793 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 20 [2022-11-02 20:42:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:57,794 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-02 20:42:57,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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) [2022-11-02 20:42:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-02 20:42:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:42:57,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:57,795 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-02 20:42:57,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:58,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:58,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 422547081, now seen corresponding path program 3 times [2022-11-02 20:42:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452343292] [2022-11-02 20:42:58,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:42:58,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:58,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:58,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:58,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:42:58,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:42:58,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:58,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 20:42:58,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:42:59,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:43:12,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:43:12,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452343292] [2022-11-02 20:43:12,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452343292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:12,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:43:12,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:43:12,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024605706] [2022-11-02 20:43:12,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:12,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:43:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:43:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:43:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=3, NotChecked=0, Total=306 [2022-11-02 20:43:12,769 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 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) [2022-11-02 20:43:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:13,406 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-02 20:43:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:43:13,407 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 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 25 [2022-11-02 20:43:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:13,408 INFO L225 Difference]: With dead ends: 37 [2022-11-02 20:43:13,408 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 20:43:13,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=130, Invalid=517, Unknown=3, NotChecked=0, Total=650 [2022-11-02 20:43:13,410 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:13,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 55 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2022-11-02 20:43:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 20:43:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-11-02 20:43:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-11-02 20:43:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-11-02 20:43:13,418 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 25 [2022-11-02 20:43:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:13,418 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-11-02 20:43:13,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 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) [2022-11-02 20:43:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-11-02 20:43:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:43:13,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:13,420 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2022-11-02 20:43:13,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:13,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:43:13,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1736897473, now seen corresponding path program 3 times [2022-11-02 20:43:13,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:43:13,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891897378] [2022-11-02 20:43:13,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:43:13,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:43:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:43:13,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:43:13,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:43:13,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:43:13,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:13,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:43:13,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:43:13,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:43:14,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:43:14,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891897378] [2022-11-02 20:43:14,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891897378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:14,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:43:14,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 20:43:14,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838976079] [2022-11-02 20:43:14,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:14,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:43:14,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:43:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:43:14,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:43:14,157 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-11-02 20:43:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:14,372 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2022-11-02 20:43:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:43:14,372 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 30 [2022-11-02 20:43:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:14,375 INFO L225 Difference]: With dead ends: 44 [2022-11-02 20:43:14,375 INFO L226 Difference]: Without dead ends: 42 [2022-11-02 20:43:14,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:43:14,376 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:14,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 37 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-11-02 20:43:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-02 20:43:14,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-02 20:43:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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) [2022-11-02 20:43:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-11-02 20:43:14,389 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 30 [2022-11-02 20:43:14,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:14,389 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-11-02 20:43:14,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-11-02 20:43:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-11-02 20:43:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:43:14,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:14,390 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 1, 1, 1, 1, 1] [2022-11-02 20:43:14,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:14,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:43:14,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1018962101, now seen corresponding path program 4 times [2022-11-02 20:43:14,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:43:14,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345755937] [2022-11-02 20:43:14,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:43:14,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:43:14,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:43:14,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:43:14,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:43:14,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:43:14,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:14,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:43:14,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:43:15,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:43:15,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:43:15,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345755937] [2022-11-02 20:43:15,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345755937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:15,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:43:15,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:43:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772183526] [2022-11-02 20:43:15,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:15,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:43:15,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:43:15,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:43:15,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:43:15,634 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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) [2022-11-02 20:43:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:16,387 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-11-02 20:43:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:43:16,387 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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 35 [2022-11-02 20:43:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:16,388 INFO L225 Difference]: With dead ends: 51 [2022-11-02 20:43:16,388 INFO L226 Difference]: Without dead ends: 49 [2022-11-02 20:43:16,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:43:16,390 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:16,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 51 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-11-02 20:43:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-02 20:43:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-11-02 20:43:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 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) [2022-11-02 20:43:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-11-02 20:43:16,400 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 35 [2022-11-02 20:43:16,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:16,401 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-11-02 20:43:16,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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) [2022-11-02 20:43:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-11-02 20:43:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 20:43:16,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:16,402 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 1, 1, 1, 1, 1] [2022-11-02 20:43:16,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:43:16,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 437684171, now seen corresponding path program 5 times [2022-11-02 20:43:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:43:16,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201336186] [2022-11-02 20:43:16,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:43:16,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:43:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:43:16,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:43:16,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:43:16,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-02 20:43:16,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:16,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 20:43:16,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:43:17,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:43:19,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:43:19,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201336186] [2022-11-02 20:43:19,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201336186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:19,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:43:19,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-02 20:43:19,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5339947] [2022-11-02 20:43:19,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:19,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:43:19,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:43:19,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:43:19,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:43:19,123 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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) [2022-11-02 20:43:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:20,401 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-02 20:43:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:43:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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 45 [2022-11-02 20:43:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:20,403 INFO L225 Difference]: With dead ends: 61 [2022-11-02 20:43:20,403 INFO L226 Difference]: Without dead ends: 59 [2022-11-02 20:43:20,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=422, Invalid=2230, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:43:20,405 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:20,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 76 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 211 Unchecked, 0.2s Time] [2022-11-02 20:43:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-02 20:43:20,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-11-02 20:43:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 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) [2022-11-02 20:43:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-11-02 20:43:20,416 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 45 [2022-11-02 20:43:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:20,416 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-11-02 20:43:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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) [2022-11-02 20:43:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-11-02 20:43:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:43:20,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:20,418 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 1, 1, 1, 1, 1] [2022-11-02 20:43:20,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:20,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:43:20,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1899906241, now seen corresponding path program 6 times [2022-11-02 20:43:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:43:20,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127007681] [2022-11-02 20:43:20,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:43:20,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:43:20,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:43:20,633 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:43:20,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:43:20,781 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-02 20:43:20,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:20,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 20:43:20,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 20:43:22,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:42,039 WARN L234 SmtUtils]: Spent 10.84s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:43:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 20:43:45,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:43:45,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127007681] [2022-11-02 20:43:45,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127007681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:45,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:43:45,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:43:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436939173] [2022-11-02 20:43:45,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:43:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:43:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:43:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=254, Unknown=4, NotChecked=0, Total=306 [2022-11-02 20:43:45,806 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 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) [2022-11-02 20:43:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:46,482 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-11-02 20:43:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:43:46,482 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 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 50 [2022-11-02 20:43:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:46,483 INFO L225 Difference]: With dead ends: 51 [2022-11-02 20:43:46,483 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:43:46,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=140, Invalid=558, Unknown=4, NotChecked=0, Total=702 [2022-11-02 20:43:46,485 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:46,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 40 Unchecked, 0.0s Time] [2022-11-02 20:43:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:43:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:43:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-02 20:43:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:43:46,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2022-11-02 20:43:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:46,487 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:43:46,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 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) [2022-11-02 20:43:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:43:46,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:43:46,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:43:46,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:46,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:43:46,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 20:43:47,130 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 20:43:47,131 INFO L895 garLoopResultBuilder]: At program point L66-2(lines 66 121) the Hoare annotation is: (let ((.cse0 (= (_ bv4 8) |ULTIMATE.start_main_~var_51~0#1|)) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse2 (= |ULTIMATE.start_main_~var_14~0#1| (_ bv0 8))) (.cse3 (= |ULTIMATE.start_main_~var_7~0#1| (_ bv0 8))) (.cse4 (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_12~0#1|)) (.cse5 (= (_ bv1 8) |ULTIMATE.start_main_~var_19~0#1|)) (.cse6 (= (_ bv1 8) |ULTIMATE.start_main_~var_49~0#1|)) (.cse7 (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_6~0#1|))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~state_8~0#1| (_ bv0 8)) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (= |ULTIMATE.start_main_~var_53_arg_1~0#1| (_ bv0 8)) (exists ((|v_ULTIMATE.start_main_#t~ite16#1_60| (_ BitVec 32))) (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) |v_ULTIMATE.start_main_#t~ite16#1_60|)) (_ bv7 32)))))) (and (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse8 (_ bv2 32))))))) (_ bv0 32))))))) (_ bv1 32)))) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) (_ bv0 8)) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse8 (_ bv1 32)))))) (_ bv7 32))) |ULTIMATE.start_main_~state_8~0#1|)))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2022-11-02 20:43:47,131 INFO L899 garLoopResultBuilder]: For program point L66-3(lines 66 121) no Hoare annotation was computed. [2022-11-02 20:43:47,131 INFO L895 garLoopResultBuilder]: At program point L122(lines 22 123) the Hoare annotation is: false [2022-11-02 20:43:47,132 INFO L899 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2022-11-02 20:43:47,132 INFO L899 garLoopResultBuilder]: For program point L116-2(line 116) no Hoare annotation was computed. [2022-11-02 20:43:47,132 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 20:43:47,132 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 20:43:47,132 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 20:43:47,132 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-02 20:43:47,132 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-02 20:43:47,133 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-02 20:43:47,133 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-02 20:43:47,136 INFO L444 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1] [2022-11-02 20:43:47,138 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:43:47,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 20:43:47,147 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 20:43:47,153 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 20:43:47,153 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 20:43:47,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:43:47 BoogieIcfgContainer [2022-11-02 20:43:47,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:43:47,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:43:47,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:43:47,156 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:43:47,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:50" (3/4) ... [2022-11-02 20:43:47,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:43:47,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-02 20:43:47,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-02 20:43:47,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:43:47,194 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((4bv8 == var_51 && 1bv8 == mask_SORT_1) && var_14 == 0bv8) && state_8 == 0bv8) && var_7 == 0bv8) && 3bv8 == mask_SORT_12) && 1bv8 == var_19) && 1bv8 == var_49) && 7bv8 == mask_SORT_6) || ((((((((((4bv8 == var_51 && 1bv8 == mask_SORT_1) && !(cond == 0bv32)) && var_53_arg_1 == 0bv8) && (\exists v_ULTIMATE.start_main_#t~ite16#1_60 : bv32 :: ~bvand32(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~bvnot32(~zero_extendFrom16To32(~bvor32(~zero_extendFrom16To32(~bvnot32(~zero_extendFrom16To32(~bvashr32(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 2bv32)[7:0]))[7:0]), 0bv32)[7:0]))[7:0]), 1bv32)[7:0]), ~zero_extendFrom16To32(mask_SORT_1))[7:0] == 0bv8 && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 1bv32)[7:0])[7:0]), 7bv32)[7:0] == state_8)) && var_14 == 0bv8) && var_7 == 0bv8) && 3bv8 == mask_SORT_12) && 1bv8 == var_19) && 1bv8 == var_49) && 7bv8 == mask_SORT_6) [2022-11-02 20:43:47,202 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-02 20:43:47,207 INFO L158 Benchmark]: Toolchain (without parser) took 57445.73ms. Allocated memory was 73.4MB in the beginning and 163.6MB in the end (delta: 90.2MB). Free memory was 49.1MB in the beginning and 94.9MB in the end (delta: -45.9MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-11-02 20:43:47,207 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 54.5MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:43:47,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.17ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 56.0MB in the end (delta: -7.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:43:47,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.72ms. Allocated memory is still 73.4MB. Free memory was 56.0MB in the beginning and 54.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:43:47,208 INFO L158 Benchmark]: Boogie Preprocessor took 25.42ms. Allocated memory is still 73.4MB. Free memory was 54.1MB in the beginning and 52.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:43:47,209 INFO L158 Benchmark]: RCFGBuilder took 527.22ms. Allocated memory is still 73.4MB. Free memory was 52.6MB in the beginning and 40.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:43:47,210 INFO L158 Benchmark]: TraceAbstraction took 56386.61ms. Allocated memory was 73.4MB in the beginning and 163.6MB in the end (delta: 90.2MB). Free memory was 39.4MB in the beginning and 98.1MB in the end (delta: -58.7MB). Peak memory consumption was 84.9MB. Max. memory is 16.1GB. [2022-11-02 20:43:47,210 INFO L158 Benchmark]: Witness Printer took 50.67ms. Allocated memory is still 163.6MB. Free memory was 98.1MB in the beginning and 94.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:43:47,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 54.5MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.17ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 56.0MB in the end (delta: -7.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.72ms. Allocated memory is still 73.4MB. Free memory was 56.0MB in the beginning and 54.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.42ms. Allocated memory is still 73.4MB. Free memory was 54.1MB in the beginning and 52.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 527.22ms. Allocated memory is still 73.4MB. Free memory was 52.6MB in the beginning and 40.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 56386.61ms. Allocated memory was 73.4MB in the beginning and 163.6MB in the end (delta: 90.2MB). Free memory was 39.4MB in the beginning and 98.1MB in the end (delta: -58.7MB). Peak memory consumption was 84.9MB. Max. memory is 16.1GB. * Witness Printer took 50.67ms. Allocated memory is still 163.6MB. Free memory was 98.1MB in the beginning and 94.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] * 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.3s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 250 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 250 mSDsluCounter, 519 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 598 IncrementalHoareTripleChecker+Unchecked, 448 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 393 IncrementalHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 71 mSDtfsCounter, 393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 587 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 39.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=10, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 45 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 113 HoareAnnotationTreeSize, 2 FomulaSimplifications, 1782 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 1416 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 46.1s InterpolantComputationTime, 260 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 485 ConstructedInterpolants, 213 QuantifiedInterpolants, 36918 SizeOfPredicates, 345 NumberOfNonLiveVariables, 2127 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 601/1162 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 66]: Loop Invariant [2022-11-02 20:43:47,234 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 20:43:47,234 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 20:43:47,235 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 20:43:47,236 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] Derived loop invariant: ((((((((4bv8 == var_51 && 1bv8 == mask_SORT_1) && var_14 == 0bv8) && state_8 == 0bv8) && var_7 == 0bv8) && 3bv8 == mask_SORT_12) && 1bv8 == var_19) && 1bv8 == var_49) && 7bv8 == mask_SORT_6) || ((((((((((4bv8 == var_51 && 1bv8 == mask_SORT_1) && !(cond == 0bv32)) && var_53_arg_1 == 0bv8) && (\exists v_ULTIMATE.start_main_#t~ite16#1_60 : bv32 :: ~bvand32(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~bvnot32(~zero_extendFrom16To32(~bvor32(~zero_extendFrom16To32(~bvnot32(~zero_extendFrom16To32(~bvashr32(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 2bv32)[7:0]))[7:0]), 0bv32)[7:0]))[7:0]), 1bv32)[7:0]), ~zero_extendFrom16To32(mask_SORT_1))[7:0] == 0bv8 && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 1bv32)[7:0])[7:0]), 7bv32)[7:0] == state_8)) && var_14 == 0bv8) && var_7 == 0bv8) && 3bv8 == mask_SORT_12) && 1bv8 == var_19) && 1bv8 == var_49) && 7bv8 == mask_SORT_6) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-02 20:43:47,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55168aa-5f1d-44f0-87da-f7b906df59d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null