./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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 92efbe3ff013b6b09e676ab9ef9cb1143c6fae1c9707966a72915cfe34a9681e --- 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 21:01:02,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:02,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:02,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:02,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:02,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:02,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:02,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:02,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:02,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:02,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:02,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:02,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:02,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:02,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:02,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:02,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:02,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:02,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:02,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:02,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:02,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:02,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:02,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:02,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:02,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:02,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:02,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:02,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:02,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:02,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:02,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:02,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:02,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:02,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:02,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:02,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:02,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:02,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:02,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:02,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:02,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:01:02,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:02,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:02,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:02,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:02,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:02,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:02,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:02,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:02,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:02,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:02,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:02,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:02,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:02,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:02,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:02,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:02,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:02,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:02,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:02,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:02,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:02,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:02,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:02,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:02,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:02,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:01:02,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:01:02,310 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:02,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:02,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:02,310 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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92efbe3ff013b6b09e676ab9ef9cb1143c6fae1c9707966a72915cfe34a9681e [2022-11-02 21:01:02,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:02,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:02,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:02,592 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:02,593 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:02,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c [2022-11-02 21:01:02,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/465251ace/4de88326f6814323b1daf0a75ae03e53/FLAGcfdac07cf [2022-11-02 21:01:03,425 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:03,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c [2022-11-02 21:01:03,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/465251ace/4de88326f6814323b1daf0a75ae03e53/FLAGcfdac07cf [2022-11-02 21:01:03,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/465251ace/4de88326f6814323b1daf0a75ae03e53 [2022-11-02 21:01:03,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:03,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:03,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:03,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:03,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:03,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:03" (1/1) ... [2022-11-02 21:01:03,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e52f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:03, skipping insertion in model container [2022-11-02 21:01:03,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:03" (1/1) ... [2022-11-02 21:01:03,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:03,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:03,936 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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c[1014,1027] [2022-11-02 21:01:04,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:04,360 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:04,385 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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c[1014,1027] [2022-11-02 21:01:04,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:04,620 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:04,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04 WrapperNode [2022-11-02 21:01:04,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:04,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:04,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:04,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:04,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:04,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:04,988 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2442 [2022-11-02 21:01:04,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:04,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:04,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:04,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:04,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:05,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:05,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:05,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:05,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (1/1) ... [2022-11-02 21:01:05,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:05,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:05,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:05,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:05,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:06,152 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:06,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:02:05,177 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:02:05,186 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:02:05,186 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:02:05,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:05 BoogieIcfgContainer [2022-11-02 21:02:05,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:02:05,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:02:05,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:02:05,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:02:05,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:03" (1/3) ... [2022-11-02 21:02:05,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaf632d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:05, skipping insertion in model container [2022-11-02 21:02:05,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:04" (2/3) ... [2022-11-02 21:02:05,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaf632d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:05, skipping insertion in model container [2022-11-02 21:02:05,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:05" (3/3) ... [2022-11-02 21:02:05,205 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.5.prop1-func-interl.c [2022-11-02 21:02:05,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:02:05,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:02:05,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:02:05,290 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;@b7aba01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:02:05,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:02:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 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 21:02:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:05,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:05,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:05,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:05,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:05,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1165686489, now seen corresponding path program 1 times [2022-11-02 21:02:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:05,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98699498] [2022-11-02 21:02:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:06,307 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 21:02:06,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:06,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98699498] [2022-11-02 21:02:06,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98699498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:06,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:06,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:06,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546538675] [2022-11-02 21:02:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:06,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:06,365 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 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 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:07,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:08,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:11,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:13,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:13,271 INFO L93 Difference]: Finished difference Result 453 states and 677 transitions. [2022-11-02 21:02:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:13,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:13,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:13,313 INFO L225 Difference]: With dead ends: 453 [2022-11-02 21:02:13,313 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 21:02:13,316 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 21:02:13,319 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 437 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:13,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 654 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-02 21:02:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 21:02:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 153. [2022-11-02 21:02:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.480263157894737) internal successors, (225), 152 states have internal predecessors, (225), 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 21:02:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 225 transitions. [2022-11-02 21:02:13,368 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 225 transitions. Word has length 13 [2022-11-02 21:02:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:13,369 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 225 transitions. [2022-11-02 21:02:13,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 225 transitions. [2022-11-02 21:02:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:13,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:13,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:13,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:02:13,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash 772659479, now seen corresponding path program 1 times [2022-11-02 21:02:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:13,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342123558] [2022-11-02 21:02:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:13,712 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 21:02:13,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:13,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342123558] [2022-11-02 21:02:13,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342123558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:13,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:13,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:13,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740270236] [2022-11-02 21:02:13,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:13,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:13,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:13,736 INFO L87 Difference]: Start difference. First operand 153 states and 225 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:16,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:17,707 INFO L93 Difference]: Finished difference Result 449 states and 664 transitions. [2022-11-02 21:02:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:17,721 INFO L225 Difference]: With dead ends: 449 [2022-11-02 21:02:17,721 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 21:02:17,722 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 21:02:17,724 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 431 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:17,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 654 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 21:02:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 21:02:17,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 155. [2022-11-02 21:02:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.474025974025974) internal successors, (227), 154 states have internal predecessors, (227), 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 21:02:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 227 transitions. [2022-11-02 21:02:17,757 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 227 transitions. Word has length 13 [2022-11-02 21:02:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:17,757 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 227 transitions. [2022-11-02 21:02:17,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 227 transitions. [2022-11-02 21:02:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:17,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:17,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:17,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:02:17,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash -36687147, now seen corresponding path program 1 times [2022-11-02 21:02:17,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:17,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513789818] [2022-11-02 21:02:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,128 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 21:02:18,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513789818] [2022-11-02 21:02:18,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513789818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:18,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:18,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:18,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421452099] [2022-11-02 21:02:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:18,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:18,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:18,134 INFO L87 Difference]: Start difference. First operand 155 states and 227 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:21,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:22,010 INFO L93 Difference]: Finished difference Result 449 states and 663 transitions. [2022-11-02 21:02:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:22,021 INFO L225 Difference]: With dead ends: 449 [2022-11-02 21:02:22,021 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 21:02:22,022 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 21:02:22,023 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 425 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:22,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 654 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 21:02:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 21:02:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 157. [2022-11-02 21:02:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.4679487179487178) internal successors, (229), 156 states have internal predecessors, (229), 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 21:02:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 229 transitions. [2022-11-02 21:02:22,035 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 229 transitions. Word has length 13 [2022-11-02 21:02:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:22,036 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 229 transitions. [2022-11-02 21:02:22,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 229 transitions. [2022-11-02 21:02:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:22,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:22,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:22,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:02:22,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:22,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 20571155, now seen corresponding path program 1 times [2022-11-02 21:02:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:22,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639825274] [2022-11-02 21:02:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,356 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 21:02:22,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:22,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639825274] [2022-11-02 21:02:22,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639825274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:22,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:22,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256900306] [2022-11-02 21:02:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:22,362 INFO L87 Difference]: Start difference. First operand 157 states and 229 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:25,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:26,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:26,096 INFO L93 Difference]: Finished difference Result 449 states and 662 transitions. [2022-11-02 21:02:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:26,119 INFO L225 Difference]: With dead ends: 449 [2022-11-02 21:02:26,119 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 21:02:26,119 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 21:02:26,121 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 419 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:26,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 656 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 21:02:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 21:02:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 159. [2022-11-02 21:02:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4620253164556962) internal successors, (231), 158 states have internal predecessors, (231), 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 21:02:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2022-11-02 21:02:26,142 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 13 [2022-11-02 21:02:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:26,143 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2022-11-02 21:02:26,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2022-11-02 21:02:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:26,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:26,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:26,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:02:26,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 20630737, now seen corresponding path program 1 times [2022-11-02 21:02:26,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:26,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396305625] [2022-11-02 21:02:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:26,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:02:26,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:02:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:02:26,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:02:26,734 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:02:26,735 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:02:26,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:02:26,745 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 21:02:26,750 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:02:26,868 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:02:26,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:02:26 BoogieIcfgContainer [2022-11-02 21:02:26,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:02:26,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:02:26,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:02:26,905 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:02:26,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:05" (3/4) ... [2022-11-02 21:02:26,910 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:02:26,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:02:26,915 INFO L158 Benchmark]: Toolchain (without parser) took 83329.16ms. Allocated memory was 98.6MB in the beginning and 648.0MB in the end (delta: 549.5MB). Free memory was 52.2MB in the beginning and 236.7MB in the end (delta: -184.5MB). Peak memory consumption was 365.7MB. Max. memory is 16.1GB. [2022-11-02 21:02:26,915 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:02:26,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1029.84ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 52.0MB in the beginning and 57.4MB in the end (delta: -5.4MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2022-11-02 21:02:26,921 INFO L158 Benchmark]: Boogie Procedure Inliner took 366.92ms. Allocated memory is still 121.6MB. Free memory was 57.4MB in the beginning and 47.5MB in the end (delta: 9.9MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-11-02 21:02:26,922 INFO L158 Benchmark]: Boogie Preprocessor took 425.57ms. Allocated memory was 121.6MB in the beginning and 232.8MB in the end (delta: 111.1MB). Free memory was 47.5MB in the beginning and 152.6MB in the end (delta: -105.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-11-02 21:02:26,922 INFO L158 Benchmark]: RCFGBuilder took 59773.23ms. Allocated memory was 232.8MB in the beginning and 648.0MB in the end (delta: 415.2MB). Free memory was 152.6MB in the beginning and 411.3MB in the end (delta: -258.7MB). Peak memory consumption was 394.4MB. Max. memory is 16.1GB. [2022-11-02 21:02:26,923 INFO L158 Benchmark]: TraceAbstraction took 21712.53ms. Allocated memory is still 648.0MB. Free memory was 410.2MB in the beginning and 237.7MB in the end (delta: 172.5MB). Peak memory consumption was 171.5MB. Max. memory is 16.1GB. [2022-11-02 21:02:26,923 INFO L158 Benchmark]: Witness Printer took 9.18ms. Allocated memory is still 648.0MB. Free memory is still 236.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:02:26,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1029.84ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 52.0MB in the beginning and 57.4MB in the end (delta: -5.4MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 366.92ms. Allocated memory is still 121.6MB. Free memory was 57.4MB in the beginning and 47.5MB in the end (delta: 9.9MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 425.57ms. Allocated memory was 121.6MB in the beginning and 232.8MB in the end (delta: 111.1MB). Free memory was 47.5MB in the beginning and 152.6MB in the end (delta: -105.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * RCFGBuilder took 59773.23ms. Allocated memory was 232.8MB in the beginning and 648.0MB in the end (delta: 415.2MB). Free memory was 152.6MB in the beginning and 411.3MB in the end (delta: -258.7MB). Peak memory consumption was 394.4MB. Max. memory is 16.1GB. * TraceAbstraction took 21712.53ms. Allocated memory is still 648.0MB. Free memory was 410.2MB in the beginning and 237.7MB in the end (delta: 172.5MB). Peak memory consumption was 171.5MB. Max. memory is 16.1GB. * Witness Printer took 9.18ms. Allocated memory is still 648.0MB. Free memory is still 236.7MB. 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 285, overapproximation of bitwiseAnd at line 281. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_38 = 0; [L39] const SORT_4 var_81 = 1; [L40] const SORT_4 var_82 = 0; [L41] const SORT_2 var_94 = 0; [L42] const SORT_2 var_96 = 1; [L43] const SORT_3 var_116 = 0; [L44] const SORT_2 var_158 = 2; [L45] const SORT_4 var_306 = 4; [L46] const SORT_2 var_318 = 4; [L47] const SORT_4 var_320 = 7; [L48] const SORT_4 var_425 = 2; [L49] const SORT_4 var_469 = 3; [L51] SORT_1 input_93; [L52] SORT_1 input_95; [L53] SORT_1 input_100; [L54] SORT_1 input_101; [L55] SORT_1 input_105; [L56] SORT_1 input_106; [L57] SORT_1 input_110; [L58] SORT_1 input_111; [L59] SORT_1 input_115; [L60] SORT_1 input_123; [L61] SORT_1 input_130; [L62] SORT_1 input_137; [L63] SORT_1 input_144; [L64] SORT_1 input_148; [L65] SORT_1 input_149; [L66] SORT_1 input_166; [L67] SORT_1 input_170; [L68] SORT_1 input_171; [L69] SORT_1 input_187; [L70] SORT_1 input_191; [L71] SORT_1 input_192; [L72] SORT_1 input_208; [L73] SORT_1 input_212; [L74] SORT_1 input_213; [L75] SORT_1 input_236; [L76] SORT_1 input_239; [L77] SORT_1 input_255; [L78] SORT_1 input_258; [L79] SORT_1 input_274; [L80] SORT_1 input_277; [L81] SORT_1 input_293; [L82] SORT_1 input_296; [L84] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L87] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L88] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L89] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L90] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L91] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L92] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_2 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L99] SORT_2 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L100] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_2 init_7_arg_1 = var_5; [L123] state_6 = init_7_arg_1 [L124] SORT_2 init_9_arg_1 = var_5; [L125] state_8 = init_9_arg_1 [L126] SORT_2 init_11_arg_1 = var_5; [L127] state_10 = init_11_arg_1 [L128] SORT_2 init_13_arg_1 = var_5; [L129] state_12 = init_13_arg_1 [L130] SORT_2 init_15_arg_1 = var_5; [L131] state_14 = init_15_arg_1 [L132] SORT_2 init_17_arg_1 = var_5; [L133] state_16 = init_17_arg_1 [L134] SORT_2 init_19_arg_1 = var_5; [L135] state_18 = init_19_arg_1 [L136] SORT_2 init_21_arg_1 = var_5; [L137] state_20 = init_21_arg_1 [L138] SORT_2 init_23_arg_1 = var_5; [L139] state_22 = init_23_arg_1 [L140] SORT_2 init_25_arg_1 = var_5; [L141] state_24 = init_25_arg_1 [L142] SORT_2 init_27_arg_1 = var_5; [L143] state_26 = init_27_arg_1 [L144] SORT_2 init_29_arg_1 = var_5; [L145] state_28 = init_29_arg_1 [L146] SORT_2 init_31_arg_1 = var_5; [L147] state_30 = init_31_arg_1 [L148] SORT_2 init_33_arg_1 = var_5; [L149] state_32 = init_33_arg_1 [L150] SORT_2 init_35_arg_1 = var_5; [L151] state_34 = init_35_arg_1 [L152] SORT_2 init_37_arg_1 = var_5; [L153] state_36 = init_37_arg_1 [L154] SORT_1 init_40_arg_1 = var_38; [L155] state_39 = init_40_arg_1 [L156] SORT_1 init_42_arg_1 = var_38; [L157] state_41 = init_42_arg_1 [L158] SORT_1 init_44_arg_1 = var_38; [L159] state_43 = init_44_arg_1 [L160] SORT_1 init_46_arg_1 = var_38; [L161] state_45 = init_46_arg_1 [L162] SORT_1 init_48_arg_1 = var_38; [L163] state_47 = init_48_arg_1 [L164] SORT_1 init_50_arg_1 = var_38; [L165] state_49 = init_50_arg_1 [L166] SORT_1 init_52_arg_1 = var_38; [L167] state_51 = init_52_arg_1 [L168] SORT_1 init_54_arg_1 = var_38; [L169] state_53 = init_54_arg_1 [L170] SORT_1 init_56_arg_1 = var_38; [L171] state_55 = init_56_arg_1 [L172] SORT_1 init_58_arg_1 = var_38; [L173] state_57 = init_58_arg_1 [L174] SORT_1 init_60_arg_1 = var_38; [L175] state_59 = init_60_arg_1 [L176] SORT_1 init_62_arg_1 = var_38; [L177] state_61 = init_62_arg_1 [L178] SORT_1 init_64_arg_1 = var_38; [L179] state_63 = init_64_arg_1 [L180] SORT_1 init_66_arg_1 = var_38; [L181] state_65 = init_66_arg_1 [L182] SORT_1 init_68_arg_1 = var_38; [L183] state_67 = init_68_arg_1 [L184] SORT_1 init_70_arg_1 = var_38; [L185] state_69 = init_70_arg_1 [L186] SORT_1 init_72_arg_1 = var_38; [L187] state_71 = init_72_arg_1 [L188] SORT_1 init_74_arg_1 = var_38; [L189] state_73 = init_74_arg_1 [L190] SORT_1 init_76_arg_1 = var_38; [L191] state_75 = init_76_arg_1 [L192] SORT_1 init_78_arg_1 = var_38; [L193] state_77 = init_78_arg_1 [L194] SORT_1 init_80_arg_1 = var_38; [L195] state_79 = init_80_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_94=0, var_96=1] [L198] input_93 = __VERIFIER_nondet_uchar() [L199] input_93 = input_93 & mask_SORT_1 [L200] input_95 = __VERIFIER_nondet_uchar() [L201] input_95 = input_95 & mask_SORT_1 [L202] input_100 = __VERIFIER_nondet_uchar() [L203] input_100 = input_100 & mask_SORT_1 [L204] input_101 = __VERIFIER_nondet_uchar() [L205] input_101 = input_101 & mask_SORT_1 [L206] input_105 = __VERIFIER_nondet_uchar() [L207] input_105 = input_105 & mask_SORT_1 [L208] input_106 = __VERIFIER_nondet_uchar() [L209] input_106 = input_106 & mask_SORT_1 [L210] input_110 = __VERIFIER_nondet_uchar() [L211] input_110 = input_110 & mask_SORT_1 [L212] input_111 = __VERIFIER_nondet_uchar() [L213] input_111 = input_111 & mask_SORT_1 [L214] input_115 = __VERIFIER_nondet_uchar() [L215] input_115 = input_115 & mask_SORT_1 [L216] input_123 = __VERIFIER_nondet_uchar() [L217] input_123 = input_123 & mask_SORT_1 [L218] input_130 = __VERIFIER_nondet_uchar() [L219] input_130 = input_130 & mask_SORT_1 [L220] input_137 = __VERIFIER_nondet_uchar() [L221] input_137 = input_137 & mask_SORT_1 [L222] input_144 = __VERIFIER_nondet_uchar() [L223] input_144 = input_144 & mask_SORT_1 [L224] input_148 = __VERIFIER_nondet_uchar() [L225] input_148 = input_148 & mask_SORT_1 [L226] input_149 = __VERIFIER_nondet_uchar() [L227] input_149 = input_149 & mask_SORT_1 [L228] input_166 = __VERIFIER_nondet_uchar() [L229] input_166 = input_166 & mask_SORT_1 [L230] input_170 = __VERIFIER_nondet_uchar() [L231] input_170 = input_170 & mask_SORT_1 [L232] input_171 = __VERIFIER_nondet_uchar() [L233] input_171 = input_171 & mask_SORT_1 [L234] input_187 = __VERIFIER_nondet_uchar() [L235] input_187 = input_187 & mask_SORT_1 [L236] input_191 = __VERIFIER_nondet_uchar() [L237] input_191 = input_191 & mask_SORT_1 [L238] input_192 = __VERIFIER_nondet_uchar() [L239] input_192 = input_192 & mask_SORT_1 [L240] input_208 = __VERIFIER_nondet_uchar() [L241] input_208 = input_208 & mask_SORT_1 [L242] input_212 = __VERIFIER_nondet_uchar() [L243] input_212 = input_212 & mask_SORT_1 [L244] input_213 = __VERIFIER_nondet_uchar() [L245] input_213 = input_213 & mask_SORT_1 [L246] input_236 = __VERIFIER_nondet_uchar() [L247] input_239 = __VERIFIER_nondet_uchar() [L248] input_255 = __VERIFIER_nondet_uchar() [L249] input_258 = __VERIFIER_nondet_uchar() [L250] input_274 = __VERIFIER_nondet_uchar() [L251] input_277 = __VERIFIER_nondet_uchar() [L252] input_293 = __VERIFIER_nondet_uchar() [L253] input_296 = __VERIFIER_nondet_uchar() [L256] SORT_1 var_83_arg_0 = state_47; [L257] SORT_4 var_83_arg_1 = var_81; [L258] SORT_4 var_83_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_94=0, var_96=1] [L259] EXPR var_83_arg_0 ? var_83_arg_1 : var_83_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83_arg_0=0, var_83_arg_0 ? var_83_arg_1 : var_83_arg_2=0, var_83_arg_1=1, var_83_arg_2=0, var_94=0, var_96=1] [L259] SORT_4 var_83 = var_83_arg_0 ? var_83_arg_1 : var_83_arg_2; [L260] SORT_1 var_84_arg_0 = state_57; [L261] SORT_4 var_84_arg_1 = var_81; [L262] SORT_4 var_84_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_94=0, var_96=1] [L263] EXPR var_84_arg_0 ? var_84_arg_1 : var_84_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84_arg_0=0, var_84_arg_0 ? var_84_arg_1 : var_84_arg_2=0, var_84_arg_1=1, var_84_arg_2=0, var_94=0, var_96=1] [L263] SORT_4 var_84 = var_84_arg_0 ? var_84_arg_1 : var_84_arg_2; [L264] SORT_4 var_85_arg_0 = var_83; [L265] SORT_4 var_85_arg_1 = var_84; [L266] SORT_4 var_85 = var_85_arg_0 + var_85_arg_1; [L267] SORT_1 var_86_arg_0 = state_67; [L268] SORT_4 var_86_arg_1 = var_81; [L269] SORT_4 var_86_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86_arg_0=0, var_86_arg_1=1, var_86_arg_2=0, var_94=0, var_96=1] [L270] EXPR var_86_arg_0 ? var_86_arg_1 : var_86_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86_arg_0=0, var_86_arg_0 ? var_86_arg_1 : var_86_arg_2=0, var_86_arg_1=1, var_86_arg_2=0, var_94=0, var_96=1] [L270] SORT_4 var_86 = var_86_arg_0 ? var_86_arg_1 : var_86_arg_2; [L271] SORT_4 var_87_arg_0 = var_85; [L272] SORT_4 var_87_arg_1 = var_86; [L273] SORT_4 var_87 = var_87_arg_0 + var_87_arg_1; [L274] SORT_1 var_88_arg_0 = state_77; [L275] SORT_4 var_88_arg_1 = var_81; [L276] SORT_4 var_88_arg_2 = var_82; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=0, var_86_arg_0=0, var_86_arg_1=1, var_86_arg_2=0, var_87=0, var_87_arg_0=0, var_87_arg_1=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_94=0, var_96=1] [L277] EXPR var_88_arg_0 ? var_88_arg_1 : var_88_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, input_100=0, input_101=0, input_105=0, input_106=0, input_110=0, input_111=0, input_115=0, input_123=1, input_130=0, input_137=0, input_144=0, input_148=0, input_149=0, input_166=0, input_170=0, input_171=0, input_187=0, input_191=1, input_192=0, input_208=0, input_212=0, input_213=0, input_236=5, input_239=8, input_255=1, input_258=2, input_274=6, input_277=4, input_293=7, input_296=3, input_93=1, input_95=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_116=0, var_158=2, var_306=4, var_318=4, var_320=7, var_38=0, var_425=2, var_469=3, var_5=0, var_81=1, var_82=0, var_83=0, var_83_arg_0=0, var_83_arg_1=1, var_83_arg_2=0, var_84=0, var_84_arg_0=0, var_84_arg_1=1, var_84_arg_2=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=0, var_86_arg_0=0, var_86_arg_1=1, var_86_arg_2=0, var_87=0, var_87_arg_0=0, var_87_arg_1=0, var_88_arg_0=0, var_88_arg_0 ? var_88_arg_1 : var_88_arg_2=0, var_88_arg_1=1, var_88_arg_2=0, var_94=0, var_96=1] [L277] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L278] SORT_4 var_89_arg_0 = var_87; [L279] SORT_4 var_89_arg_1 = var_88; [L280] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L281] var_89 = var_89 & mask_SORT_4 [L282] SORT_4 var_90_arg_0 = var_89; [L283] SORT_4 var_90_arg_1 = var_81; [L284] SORT_1 var_90 = var_90_arg_0 <= var_90_arg_1; [L285] SORT_1 var_91_arg_0 = ~state_79; [L286] var_91_arg_0 = var_91_arg_0 & mask_SORT_1 [L287] SORT_1 var_91_arg_1 = ~var_90; [L288] var_91_arg_1 = var_91_arg_1 & mask_SORT_1 [L289] SORT_1 var_91 = var_91_arg_0 & var_91_arg_1; [L290] var_91 = var_91 & mask_SORT_1 [L291] SORT_1 bad_92_arg_0 = var_91; [L292] CALL __VERIFIER_assert(!(bad_92_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, 155 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1712 SdHoareTripleChecker+Valid, 18.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1712 mSDsluCounter, 2618 SdHoareTripleChecker+Invalid, 17.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1745 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 873 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=4, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 576 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 88 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 21:02:26,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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 92efbe3ff013b6b09e676ab9ef9cb1143c6fae1c9707966a72915cfe34a9681e --- 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 21:02:29,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:02:29,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:02:29,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:02:29,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:02:29,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:02:29,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:02:29,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:02:29,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:02:29,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:02:29,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:02:29,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:02:29,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:02:29,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:02:29,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:02:29,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:02:29,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:02:29,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:02:29,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:02:29,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:02:29,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:02:29,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:02:29,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:02:29,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:02:29,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:02:29,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:02:29,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:02:29,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:02:29,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:02:29,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:02:29,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:02:29,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:02:29,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:02:29,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:02:29,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:02:29,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:02:29,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:02:29,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:02:29,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:02:29,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:02:29,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:02:29,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:02:29,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:02:29,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:02:29,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:02:29,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:02:29,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:02:29,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:02:29,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:02:29,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:02:29,861 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:02:29,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:02:29,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:02:29,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:02:29,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:02:29,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:02:29,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:02:29,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:02:29,863 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:02:29,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:02:29,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:02:29,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:02:29,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:02:29,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:02:29,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:02:29,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:29,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:02:29,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:02:29,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:02:29,867 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:02:29,867 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:02:29,867 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:02:29,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:02:29,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:02:29,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:02:29,868 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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92efbe3ff013b6b09e676ab9ef9cb1143c6fae1c9707966a72915cfe34a9681e [2022-11-02 21:02:30,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:02:30,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:02:30,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:02:30,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:02:30,258 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:02:30,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c [2022-11-02 21:02:30,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/290a92042/b3d103e79e1e4bbc8cac75658a90a371/FLAGfa6ee1277 [2022-11-02 21:02:31,198 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:02:31,200 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c [2022-11-02 21:02:31,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/290a92042/b3d103e79e1e4bbc8cac75658a90a371/FLAGfa6ee1277 [2022-11-02 21:02:31,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/data/290a92042/b3d103e79e1e4bbc8cac75658a90a371 [2022-11-02 21:02:31,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:02:31,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:02:31,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:31,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:02:31,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:02:31,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:31" (1/1) ... [2022-11-02 21:02:31,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29abf211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:31, skipping insertion in model container [2022-11-02 21:02:31,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:31" (1/1) ... [2022-11-02 21:02:31,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:02:31,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:02:31,754 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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c[1014,1027] [2022-11-02 21:02:32,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:02:32,233 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:02:32,255 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_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.5.prop1-func-interl.c[1014,1027] [2022-11-02 21:02:32,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:02:32,439 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:02:32,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32 WrapperNode [2022-11-02 21:02:32,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:32,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:02:32,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:02:32,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:02:32,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,665 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2442 [2022-11-02 21:02:32,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:02:32,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:02:32,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:02:32,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:02:32,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,795 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:02:32,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:02:32,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:02:32,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:02:32,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (1/1) ... [2022-11-02 21:02:32,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:32,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:32,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:02:32,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:02:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:02:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:02:33,604 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:02:33,606 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:02:35,934 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:02:35,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:02:35,949 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:02:35,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:35 BoogieIcfgContainer [2022-11-02 21:02:35,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:02:35,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:02:35,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:02:35,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:02:35,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:02:31" (1/3) ... [2022-11-02 21:02:35,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c9f6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:35, skipping insertion in model container [2022-11-02 21:02:35,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:32" (2/3) ... [2022-11-02 21:02:35,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c9f6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:35, skipping insertion in model container [2022-11-02 21:02:35,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:35" (3/3) ... [2022-11-02 21:02:35,964 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.5.prop1-func-interl.c [2022-11-02 21:02:35,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:02:35,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:02:36,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:02:36,098 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;@44660119, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:02:36,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:02:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 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 21:02:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:36,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:36,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:36,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1165686489, now seen corresponding path program 1 times [2022-11-02 21:02:36,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:36,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700224530] [2022-11-02 21:02:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:36,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:36,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:36,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:36,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:02:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:36,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:36,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:36,859 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 21:02:36,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:36,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:36,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700224530] [2022-11-02 21:02:36,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700224530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:36,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:36,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705191887] [2022-11-02 21:02:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:36,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:36,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:36,919 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 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 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:37,364 INFO L93 Difference]: Finished difference Result 601 states and 899 transitions. [2022-11-02 21:02:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:37,388 INFO L225 Difference]: With dead ends: 601 [2022-11-02 21:02:37,390 INFO L226 Difference]: Without dead ends: 448 [2022-11-02 21:02:37,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 21:02:37,401 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 655 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:37,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 871 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:02:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-02 21:02:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 153. [2022-11-02 21:02:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.480263157894737) internal successors, (225), 152 states have internal predecessors, (225), 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 21:02:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 225 transitions. [2022-11-02 21:02:37,470 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 225 transitions. Word has length 13 [2022-11-02 21:02:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:37,471 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 225 transitions. [2022-11-02 21:02:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 225 transitions. [2022-11-02 21:02:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:37,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:37,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:37,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:37,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:37,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash 772659479, now seen corresponding path program 1 times [2022-11-02 21:02:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:37,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827928264] [2022-11-02 21:02:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:37,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:37,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:37,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:37,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:02:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:38,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:38,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:38,349 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 21:02:38,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:38,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827928264] [2022-11-02 21:02:38,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827928264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:38,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:38,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:38,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368489421] [2022-11-02 21:02:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:38,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:38,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:38,361 INFO L87 Difference]: Start difference. First operand 153 states and 225 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:38,666 INFO L93 Difference]: Finished difference Result 597 states and 883 transitions. [2022-11-02 21:02:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:38,673 INFO L225 Difference]: With dead ends: 597 [2022-11-02 21:02:38,673 INFO L226 Difference]: Without dead ends: 448 [2022-11-02 21:02:38,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 21:02:38,675 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 649 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:38,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 870 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:02:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-02 21:02:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 155. [2022-11-02 21:02:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.474025974025974) internal successors, (227), 154 states have internal predecessors, (227), 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 21:02:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 227 transitions. [2022-11-02 21:02:38,690 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 227 transitions. Word has length 13 [2022-11-02 21:02:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:38,691 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 227 transitions. [2022-11-02 21:02:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 227 transitions. [2022-11-02 21:02:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:38,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:38,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:38,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:38,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:38,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:38,911 INFO L85 PathProgramCache]: Analyzing trace with hash -36687147, now seen corresponding path program 1 times [2022-11-02 21:02:38,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:38,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90511552] [2022-11-02 21:02:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:38,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:38,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:38,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:38,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:02:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:39,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:39,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:39,497 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 21:02:39,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:39,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:39,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90511552] [2022-11-02 21:02:39,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90511552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:39,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:39,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:39,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643222146] [2022-11-02 21:02:39,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:39,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:39,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:39,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:39,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:39,502 INFO L87 Difference]: Start difference. First operand 155 states and 227 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:39,767 INFO L93 Difference]: Finished difference Result 597 states and 882 transitions. [2022-11-02 21:02:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:39,773 INFO L225 Difference]: With dead ends: 597 [2022-11-02 21:02:39,773 INFO L226 Difference]: Without dead ends: 448 [2022-11-02 21:02:39,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 21:02:39,775 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 643 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:39,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 869 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-02 21:02:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 157. [2022-11-02 21:02:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.4679487179487178) internal successors, (229), 156 states have internal predecessors, (229), 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 21:02:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 229 transitions. [2022-11-02 21:02:39,789 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 229 transitions. Word has length 13 [2022-11-02 21:02:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:39,789 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 229 transitions. [2022-11-02 21:02:39,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 229 transitions. [2022-11-02 21:02:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:39,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:39,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:39,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:40,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:40,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash 20571155, now seen corresponding path program 1 times [2022-11-02 21:02:40,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:40,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94404041] [2022-11-02 21:02:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:40,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:40,009 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:40,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:02:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:40,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:40,559 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 21:02:40,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:40,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:40,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94404041] [2022-11-02 21:02:40,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94404041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:40,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:40,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:40,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604077093] [2022-11-02 21:02:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:40,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:40,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:40,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:40,562 INFO L87 Difference]: Start difference. First operand 157 states and 229 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:40,772 INFO L93 Difference]: Finished difference Result 597 states and 881 transitions. [2022-11-02 21:02:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:40,778 INFO L225 Difference]: With dead ends: 597 [2022-11-02 21:02:40,778 INFO L226 Difference]: Without dead ends: 448 [2022-11-02 21:02:40,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 21:02:40,780 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 637 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:40,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 871 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-02 21:02:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 159. [2022-11-02 21:02:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4620253164556962) internal successors, (231), 158 states have internal predecessors, (231), 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 21:02:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2022-11-02 21:02:40,790 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 13 [2022-11-02 21:02:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:40,791 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2022-11-02 21:02:40,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2022-11-02 21:02:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:40,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:40,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:40,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:41,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:41,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash 20630737, now seen corresponding path program 1 times [2022-11-02 21:02:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:41,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861025332] [2022-11-02 21:02:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:41,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:41,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:41,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:41,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:02:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:41,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:02:41,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:42,126 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 21:02:42,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:42,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:42,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861025332] [2022-11-02 21:02:42,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861025332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:42,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:42,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 21:02:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222358028] [2022-11-02 21:02:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:42,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:02:42,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:02:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:02:42,129 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:44,688 INFO L93 Difference]: Finished difference Result 789 states and 1159 transitions. [2022-11-02 21:02:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:02:44,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:44,692 INFO L225 Difference]: With dead ends: 789 [2022-11-02 21:02:44,692 INFO L226 Difference]: Without dead ends: 787 [2022-11-02 21:02:44,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:02:44,694 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1947 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:44,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 3193 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:02:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-02 21:02:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 167. [2022-11-02 21:02:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4578313253012047) internal successors, (242), 166 states have internal predecessors, (242), 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 21:02:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 242 transitions. [2022-11-02 21:02:44,706 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 242 transitions. Word has length 13 [2022-11-02 21:02:44,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:44,707 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 242 transitions. [2022-11-02 21:02:44,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 242 transitions. [2022-11-02 21:02:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:44,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:44,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:44,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:44,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:44,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2059721643, now seen corresponding path program 1 times [2022-11-02 21:02:44,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:44,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954739590] [2022-11-02 21:02:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:44,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:44,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:44,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:44,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:02:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:46,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:02:46,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:46,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:46,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:46,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954739590] [2022-11-02 21:02:46,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954739590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:46,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:46,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:46,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036459360] [2022-11-02 21:02:46,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:46,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:46,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:46,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:46,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:46,514 INFO L87 Difference]: Start difference. First operand 167 states and 242 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:02:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:46,745 INFO L93 Difference]: Finished difference Result 619 states and 911 transitions. [2022-11-02 21:02:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-11-02 21:02:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:46,751 INFO L225 Difference]: With dead ends: 619 [2022-11-02 21:02:46,751 INFO L226 Difference]: Without dead ends: 462 [2022-11-02 21:02:46,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 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 21:02:46,752 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 519 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:46,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 857 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:46,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-02 21:02:46,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 213. [2022-11-02 21:02:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4575471698113207) internal successors, (309), 212 states have internal predecessors, (309), 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 21:02:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 309 transitions. [2022-11-02 21:02:46,764 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 309 transitions. Word has length 160 [2022-11-02 21:02:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:46,764 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 309 transitions. [2022-11-02 21:02:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:02:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 309 transitions. [2022-11-02 21:02:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:46,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:46,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:46,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:46,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:46,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2116804179, now seen corresponding path program 1 times [2022-11-02 21:02:46,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:46,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86550462] [2022-11-02 21:02:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:46,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:46,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:46,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:47,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:02:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:48,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:02:48,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:48,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:48,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:48,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86550462] [2022-11-02 21:02:48,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86550462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:48,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:48,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:48,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882598598] [2022-11-02 21:02:48,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:48,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:48,616 INFO L87 Difference]: Start difference. First operand 213 states and 309 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:02:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:48,910 INFO L93 Difference]: Finished difference Result 682 states and 1001 transitions. [2022-11-02 21:02:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:48,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:02:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:48,914 INFO L225 Difference]: With dead ends: 682 [2022-11-02 21:02:48,914 INFO L226 Difference]: Without dead ends: 525 [2022-11-02 21:02:48,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:02:48,916 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 812 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:48,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1269 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-02 21:02:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 215. [2022-11-02 21:02:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4532710280373833) internal successors, (311), 214 states have internal predecessors, (311), 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 21:02:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 311 transitions. [2022-11-02 21:02:48,927 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 311 transitions. Word has length 160 [2022-11-02 21:02:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:48,928 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 311 transitions. [2022-11-02 21:02:48,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:02:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 311 transitions. [2022-11-02 21:02:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:48,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:48,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:48,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:49,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:49,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash 144769071, now seen corresponding path program 1 times [2022-11-02 21:02:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:49,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532160967] [2022-11-02 21:02:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:49,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:49,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:49,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:49,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:02:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:50,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:02:50,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:50,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:50,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:50,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532160967] [2022-11-02 21:02:50,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532160967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:50,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:50,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439208495] [2022-11-02 21:02:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:50,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:50,985 INFO L87 Difference]: Start difference. First operand 215 states and 311 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:02:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:51,239 INFO L93 Difference]: Finished difference Result 424 states and 619 transitions. [2022-11-02 21:02:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:02:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 160 [2022-11-02 21:02:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:51,242 INFO L225 Difference]: With dead ends: 424 [2022-11-02 21:02:51,242 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 21:02:51,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:02:51,243 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 83 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:51,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1148 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2022-11-02 21:02:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 21:02:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-02 21:02:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4511278195488722) internal successors, (386), 266 states have internal predecessors, (386), 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 21:02:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 386 transitions. [2022-11-02 21:02:51,265 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 386 transitions. Word has length 160 [2022-11-02 21:02:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:51,266 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 386 transitions. [2022-11-02 21:02:51,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:02:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 386 transitions. [2022-11-02 21:02:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:51,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:51,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:51,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:51,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 915502637, now seen corresponding path program 1 times [2022-11-02 21:02:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:51,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512641441] [2022-11-02 21:02:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:51,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:51,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:51,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:02:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:52,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:02:52,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:52,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:52,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:52,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512641441] [2022-11-02 21:02:52,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512641441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:52,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:52,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124203998] [2022-11-02 21:02:52,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:52,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:52,976 INFO L87 Difference]: Start difference. First operand 267 states and 386 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:02:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:53,196 INFO L93 Difference]: Finished difference Result 671 states and 984 transitions. [2022-11-02 21:02:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-11-02 21:02:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:53,202 INFO L225 Difference]: With dead ends: 671 [2022-11-02 21:02:53,202 INFO L226 Difference]: Without dead ends: 514 [2022-11-02 21:02:53,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 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 21:02:53,203 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 467 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:53,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 855 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-02 21:02:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 285. [2022-11-02 21:02:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.4507042253521127) internal successors, (412), 284 states have internal predecessors, (412), 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 21:02:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 412 transitions. [2022-11-02 21:02:53,215 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 412 transitions. Word has length 160 [2022-11-02 21:02:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:53,217 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 412 transitions. [2022-11-02 21:02:53,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:02:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 412 transitions. [2022-11-02 21:02:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:53,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:53,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:53,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:53,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:53,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1502981841, now seen corresponding path program 1 times [2022-11-02 21:02:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:53,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878209397] [2022-11-02 21:02:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:53,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:53,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:53,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:53,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:02:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:54,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:02:54,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:54,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:54,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:54,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878209397] [2022-11-02 21:02:54,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878209397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:54,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:54,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659185273] [2022-11-02 21:02:54,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:54,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:54,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:54,935 INFO L87 Difference]: Start difference. First operand 285 states and 412 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:02:55,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:55,224 INFO L93 Difference]: Finished difference Result 754 states and 1104 transitions. [2022-11-02 21:02:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:02:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:55,229 INFO L225 Difference]: With dead ends: 754 [2022-11-02 21:02:55,229 INFO L226 Difference]: Without dead ends: 597 [2022-11-02 21:02:55,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:02:55,231 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 790 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:55,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1266 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-11-02 21:02:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 287. [2022-11-02 21:02:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.4475524475524475) internal successors, (414), 286 states have internal predecessors, (414), 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 21:02:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 414 transitions. [2022-11-02 21:02:55,242 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 414 transitions. Word has length 160 [2022-11-02 21:02:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:55,243 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 414 transitions. [2022-11-02 21:02:55,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:02:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 414 transitions. [2022-11-02 21:02:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:55,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:55,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:55,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:55,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:55,461 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:55,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash -178125647, now seen corresponding path program 1 times [2022-11-02 21:02:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:55,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012232060] [2022-11-02 21:02:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:55,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:55,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:55,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:55,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:02:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:56,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:02:56,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:57,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:57,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:57,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012232060] [2022-11-02 21:02:57,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012232060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:57,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:57,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:57,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34693633] [2022-11-02 21:02:57,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:57,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:57,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:57,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:57,034 INFO L87 Difference]: Start difference. First operand 287 states and 414 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:02:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:57,224 INFO L93 Difference]: Finished difference Result 671 states and 982 transitions. [2022-11-02 21:02:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:57,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-11-02 21:02:57,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:57,236 INFO L225 Difference]: With dead ends: 671 [2022-11-02 21:02:57,236 INFO L226 Difference]: Without dead ends: 514 [2022-11-02 21:02:57,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 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 21:02:57,237 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 415 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:57,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 853 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-02 21:02:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 305. [2022-11-02 21:02:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.4473684210526316) internal successors, (440), 304 states have internal predecessors, (440), 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 21:02:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 440 transitions. [2022-11-02 21:02:57,258 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 440 transitions. Word has length 160 [2022-11-02 21:02:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:57,259 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 440 transitions. [2022-11-02 21:02:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:02:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 440 transitions. [2022-11-02 21:02:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:57,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:57,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:57,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:57,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:57,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1864305485, now seen corresponding path program 1 times [2022-11-02 21:02:57,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:57,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693852463] [2022-11-02 21:02:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:57,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:57,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:57,486 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:57,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:02:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:58,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:02:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:59,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:59,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:59,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693852463] [2022-11-02 21:02:59,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693852463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:59,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:59,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742935652] [2022-11-02 21:02:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:59,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:59,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:59,027 INFO L87 Difference]: Start difference. First operand 305 states and 440 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:02:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:59,278 INFO L93 Difference]: Finished difference Result 774 states and 1132 transitions. [2022-11-02 21:02:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:02:59,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:59,282 INFO L225 Difference]: With dead ends: 774 [2022-11-02 21:02:59,282 INFO L226 Difference]: Without dead ends: 617 [2022-11-02 21:02:59,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:02:59,283 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 768 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:59,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1263 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:59,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-02 21:02:59,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 307. [2022-11-02 21:02:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4444444444444444) internal successors, (442), 306 states have internal predecessors, (442), 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 21:02:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 442 transitions. [2022-11-02 21:02:59,295 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 442 transitions. Word has length 160 [2022-11-02 21:02:59,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:59,296 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 442 transitions. [2022-11-02 21:02:59,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:02:59,296 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 442 transitions. [2022-11-02 21:02:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:02:59,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:59,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:59,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:59,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:59,525 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:59,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2013265205, now seen corresponding path program 1 times [2022-11-02 21:02:59,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:59,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009848656] [2022-11-02 21:02:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:59,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:59,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:59,530 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:59,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:03:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:00,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:00,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:00,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:00,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:00,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009848656] [2022-11-02 21:03:00,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009848656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:00,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:00,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:00,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529424498] [2022-11-02 21:03:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:00,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:00,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:00,790 INFO L87 Difference]: Start difference. First operand 307 states and 442 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:03:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:01,195 INFO L93 Difference]: Finished difference Result 798 states and 1161 transitions. [2022-11-02 21:03:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:03:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:01,199 INFO L225 Difference]: With dead ends: 798 [2022-11-02 21:03:01,199 INFO L226 Difference]: Without dead ends: 641 [2022-11-02 21:03:01,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:01,200 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 485 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:01,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1901 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 24 Unchecked, 0.4s Time] [2022-11-02 21:03:01,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-02 21:03:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 437. [2022-11-02 21:03:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.438073394495413) internal successors, (627), 436 states have internal predecessors, (627), 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 21:03:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 627 transitions. [2022-11-02 21:03:01,215 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 627 transitions. Word has length 160 [2022-11-02 21:03:01,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:01,216 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 627 transitions. [2022-11-02 21:03:01,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:03:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 627 transitions. [2022-11-02 21:03:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:01,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:01,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:01,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:01,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:01,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1721002313, now seen corresponding path program 1 times [2022-11-02 21:03:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:01,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785106634] [2022-11-02 21:03:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:01,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:01,445 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:01,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:03:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:02,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:02,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:02,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:02,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785106634] [2022-11-02 21:03:02,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785106634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:02,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:02,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:02,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510904417] [2022-11-02 21:03:02,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:02,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:02,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:02,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:02,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:02,962 INFO L87 Difference]: Start difference. First operand 437 states and 627 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:03:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:03,178 INFO L93 Difference]: Finished difference Result 624 states and 899 transitions. [2022-11-02 21:03:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:03:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:03,182 INFO L225 Difference]: With dead ends: 624 [2022-11-02 21:03:03,182 INFO L226 Difference]: Without dead ends: 467 [2022-11-02 21:03:03,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:03,184 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 60 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:03,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1200 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 18 Unchecked, 0.2s Time] [2022-11-02 21:03:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-02 21:03:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2022-11-02 21:03:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.4291845493562232) internal successors, (666), 466 states have internal predecessors, (666), 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 21:03:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 666 transitions. [2022-11-02 21:03:03,197 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 666 transitions. Word has length 160 [2022-11-02 21:03:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:03,197 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 666 transitions. [2022-11-02 21:03:03,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:03:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 666 transitions. [2022-11-02 21:03:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:03,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:03,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:03,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:03,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:03,423 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1313047733, now seen corresponding path program 1 times [2022-11-02 21:03:03,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:03,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554653242] [2022-11-02 21:03:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:03,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:03,430 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:03,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:03:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:04,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:05,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:05,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:05,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554653242] [2022-11-02 21:03:05,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554653242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:05,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:05,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97623600] [2022-11-02 21:03:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:05,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:05,209 INFO L87 Difference]: Start difference. First operand 467 states and 666 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:03:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:05,427 INFO L93 Difference]: Finished difference Result 831 states and 1204 transitions. [2022-11-02 21:03:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:05,433 INFO L225 Difference]: With dead ends: 831 [2022-11-02 21:03:05,433 INFO L226 Difference]: Without dead ends: 674 [2022-11-02 21:03:05,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 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 21:03:05,434 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 363 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:05,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 851 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-11-02 21:03:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 485. [2022-11-02 21:03:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.4297520661157024) internal successors, (692), 484 states have internal predecessors, (692), 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 21:03:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 692 transitions. [2022-11-02 21:03:05,451 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 692 transitions. Word has length 160 [2022-11-02 21:03:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:05,452 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 692 transitions. [2022-11-02 21:03:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 21:03:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 692 transitions. [2022-11-02 21:03:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:05,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:05,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:05,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:05,679 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2088433225, now seen corresponding path program 1 times [2022-11-02 21:03:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:05,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372195075] [2022-11-02 21:03:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:05,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:05,684 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:05,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:03:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:06,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:07,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:07,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:07,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372195075] [2022-11-02 21:03:07,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372195075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:07,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:07,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424569467] [2022-11-02 21:03:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:07,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:07,141 INFO L87 Difference]: Start difference. First operand 485 states and 692 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:07,429 INFO L93 Difference]: Finished difference Result 894 states and 1294 transitions. [2022-11-02 21:03:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:07,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:07,433 INFO L225 Difference]: With dead ends: 894 [2022-11-02 21:03:07,433 INFO L226 Difference]: Without dead ends: 737 [2022-11-02 21:03:07,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:07,435 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 630 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:07,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1182 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-02 21:03:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 495. [2022-11-02 21:03:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.4291497975708503) internal successors, (706), 494 states have internal predecessors, (706), 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 21:03:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 706 transitions. [2022-11-02 21:03:07,451 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 706 transitions. Word has length 160 [2022-11-02 21:03:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:07,452 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 706 transitions. [2022-11-02 21:03:07,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 706 transitions. [2022-11-02 21:03:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:07,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:07,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:07,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:07,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:07,671 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1362528569, now seen corresponding path program 1 times [2022-11-02 21:03:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:07,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78441064] [2022-11-02 21:03:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:07,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:07,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:07,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:07,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:03:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:08,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:09,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:09,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:09,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78441064] [2022-11-02 21:03:09,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78441064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:09,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:09,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:09,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210377635] [2022-11-02 21:03:09,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:09,268 INFO L87 Difference]: Start difference. First operand 495 states and 706 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:09,578 INFO L93 Difference]: Finished difference Result 894 states and 1293 transitions. [2022-11-02 21:03:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:09,583 INFO L225 Difference]: With dead ends: 894 [2022-11-02 21:03:09,583 INFO L226 Difference]: Without dead ends: 737 [2022-11-02 21:03:09,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:09,586 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 623 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:09,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1157 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-02 21:03:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 497. [2022-11-02 21:03:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.4274193548387097) internal successors, (708), 496 states have internal predecessors, (708), 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 21:03:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 708 transitions. [2022-11-02 21:03:09,603 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 708 transitions. Word has length 160 [2022-11-02 21:03:09,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:09,604 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 708 transitions. [2022-11-02 21:03:09,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 708 transitions. [2022-11-02 21:03:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:09,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:09,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:09,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:09,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:09,832 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:09,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:09,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1290142011, now seen corresponding path program 1 times [2022-11-02 21:03:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859760136] [2022-11-02 21:03:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:09,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:09,836 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:09,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:03:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:10,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:10,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:11,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:11,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:11,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859760136] [2022-11-02 21:03:11,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859760136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:11,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:11,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964920998] [2022-11-02 21:03:11,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:11,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:11,472 INFO L87 Difference]: Start difference. First operand 497 states and 708 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:11,733 INFO L93 Difference]: Finished difference Result 914 states and 1322 transitions. [2022-11-02 21:03:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:11,737 INFO L225 Difference]: With dead ends: 914 [2022-11-02 21:03:11,737 INFO L226 Difference]: Without dead ends: 757 [2022-11-02 21:03:11,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:11,739 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 643 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:11,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1200 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-02 21:03:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 501. [2022-11-02 21:03:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.426) internal successors, (713), 500 states have internal predecessors, (713), 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 21:03:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 713 transitions. [2022-11-02 21:03:11,754 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 713 transitions. Word has length 160 [2022-11-02 21:03:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:11,755 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 713 transitions. [2022-11-02 21:03:11,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 713 transitions. [2022-11-02 21:03:11,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:11,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:11,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:11,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:11,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:11,979 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1618621891, now seen corresponding path program 1 times [2022-11-02 21:03:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:11,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654654617] [2022-11-02 21:03:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:11,982 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:11,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:03:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:12,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:12,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:13,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:13,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654654617] [2022-11-02 21:03:13,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654654617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:13,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:13,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622874413] [2022-11-02 21:03:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:13,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:13,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:13,460 INFO L87 Difference]: Start difference. First operand 501 states and 713 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:13,725 INFO L93 Difference]: Finished difference Result 914 states and 1321 transitions. [2022-11-02 21:03:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:13,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:13,729 INFO L225 Difference]: With dead ends: 914 [2022-11-02 21:03:13,729 INFO L226 Difference]: Without dead ends: 757 [2022-11-02 21:03:13,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:13,731 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 636 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:13,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1175 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-02 21:03:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 503. [2022-11-02 21:03:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.4243027888446216) internal successors, (715), 502 states have internal predecessors, (715), 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 21:03:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 715 transitions. [2022-11-02 21:03:13,746 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 715 transitions. Word has length 160 [2022-11-02 21:03:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:13,747 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 715 transitions. [2022-11-02 21:03:13,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 715 transitions. [2022-11-02 21:03:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:13,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:13,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:13,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:13,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:13,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash 304606143, now seen corresponding path program 1 times [2022-11-02 21:03:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:13,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782778036] [2022-11-02 21:03:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:13,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:13,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:13,966 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:13,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:03:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:14,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:15,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:15,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:15,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782778036] [2022-11-02 21:03:15,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782778036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:15,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:15,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:15,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189410678] [2022-11-02 21:03:15,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:15,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:15,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:15,306 INFO L87 Difference]: Start difference. First operand 503 states and 715 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:15,722 INFO L93 Difference]: Finished difference Result 818 states and 1180 transitions. [2022-11-02 21:03:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:15,728 INFO L225 Difference]: With dead ends: 818 [2022-11-02 21:03:15,728 INFO L226 Difference]: Without dead ends: 661 [2022-11-02 21:03:15,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:15,729 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 498 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:15,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 967 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:03:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-02 21:03:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 505. [2022-11-02 21:03:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.4226190476190477) internal successors, (717), 504 states have internal predecessors, (717), 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 21:03:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 717 transitions. [2022-11-02 21:03:15,744 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 717 transitions. Word has length 160 [2022-11-02 21:03:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:15,745 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 717 transitions. [2022-11-02 21:03:15,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 717 transitions. [2022-11-02 21:03:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:15,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:15,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:15,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:15,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:15,963 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:15,964 INFO L85 PathProgramCache]: Analyzing trace with hash 164057533, now seen corresponding path program 1 times [2022-11-02 21:03:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:15,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375750611] [2022-11-02 21:03:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:15,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:15,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:15,966 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:15,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:03:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:16,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:16,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:17,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:17,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375750611] [2022-11-02 21:03:17,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375750611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:17,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:17,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2827642] [2022-11-02 21:03:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:17,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:17,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:17,416 INFO L87 Difference]: Start difference. First operand 505 states and 717 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:17,618 INFO L93 Difference]: Finished difference Result 934 states and 1349 transitions. [2022-11-02 21:03:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:17,622 INFO L225 Difference]: With dead ends: 934 [2022-11-02 21:03:17,622 INFO L226 Difference]: Without dead ends: 777 [2022-11-02 21:03:17,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:17,624 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 654 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:17,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1217 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-11-02 21:03:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 507. [2022-11-02 21:03:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.4209486166007905) internal successors, (719), 506 states have internal predecessors, (719), 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 21:03:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 719 transitions. [2022-11-02 21:03:17,647 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 719 transitions. Word has length 160 [2022-11-02 21:03:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:17,648 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 719 transitions. [2022-11-02 21:03:17,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 719 transitions. [2022-11-02 21:03:17,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:17,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:17,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:17,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:17,873 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1641380801, now seen corresponding path program 1 times [2022-11-02 21:03:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:17,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157678401] [2022-11-02 21:03:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:17,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:17,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:17,876 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:17,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:03:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:18,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:19,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:19,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:19,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157678401] [2022-11-02 21:03:19,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157678401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:19,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:19,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:19,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199976017] [2022-11-02 21:03:19,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:19,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:19,439 INFO L87 Difference]: Start difference. First operand 507 states and 719 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:19,689 INFO L93 Difference]: Finished difference Result 934 states and 1348 transitions. [2022-11-02 21:03:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:19,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:19,695 INFO L225 Difference]: With dead ends: 934 [2022-11-02 21:03:19,696 INFO L226 Difference]: Without dead ends: 777 [2022-11-02 21:03:19,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:19,698 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 647 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:19,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1192 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:19,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-11-02 21:03:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 509. [2022-11-02 21:03:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.419291338582677) internal successors, (721), 508 states have internal predecessors, (721), 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 21:03:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 721 transitions. [2022-11-02 21:03:19,714 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 721 transitions. Word has length 160 [2022-11-02 21:03:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:19,715 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 721 transitions. [2022-11-02 21:03:19,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 721 transitions. [2022-11-02 21:03:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:19,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:19,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:19,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 21:03:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:19,923 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1218678975, now seen corresponding path program 1 times [2022-11-02 21:03:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:19,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417258481] [2022-11-02 21:03:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:19,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:19,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:19,929 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:19,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:03:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:21,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:21,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:21,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:21,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:21,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417258481] [2022-11-02 21:03:21,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417258481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:21,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:21,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:21,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170065862] [2022-11-02 21:03:21,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:21,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:21,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:21,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:21,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:21,604 INFO L87 Difference]: Start difference. First operand 509 states and 721 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:21,857 INFO L93 Difference]: Finished difference Result 954 states and 1377 transitions. [2022-11-02 21:03:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:21,861 INFO L225 Difference]: With dead ends: 954 [2022-11-02 21:03:21,861 INFO L226 Difference]: Without dead ends: 797 [2022-11-02 21:03:21,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:21,864 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 667 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:21,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1235 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-02 21:03:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 513. [2022-11-02 21:03:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.41796875) internal successors, (726), 512 states have internal predecessors, (726), 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 21:03:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 726 transitions. [2022-11-02 21:03:21,882 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 726 transitions. Word has length 160 [2022-11-02 21:03:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:21,882 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 726 transitions. [2022-11-02 21:03:21,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 726 transitions. [2022-11-02 21:03:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:21,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:21,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:21,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:22,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:22,105 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:22,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1487940419, now seen corresponding path program 1 times [2022-11-02 21:03:22,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:22,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592042738] [2022-11-02 21:03:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:22,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:22,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:22,109 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:22,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:03:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:23,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:23,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:23,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:23,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592042738] [2022-11-02 21:03:23,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592042738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:23,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:23,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261682892] [2022-11-02 21:03:23,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:23,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:23,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:23,755 INFO L87 Difference]: Start difference. First operand 513 states and 726 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:24,004 INFO L93 Difference]: Finished difference Result 954 states and 1376 transitions. [2022-11-02 21:03:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:24,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2022-11-02 21:03:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:24,008 INFO L225 Difference]: With dead ends: 954 [2022-11-02 21:03:24,008 INFO L226 Difference]: Without dead ends: 797 [2022-11-02 21:03:24,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:24,010 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 660 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:24,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1210 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-02 21:03:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 515. [2022-11-02 21:03:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.416342412451362) internal successors, (728), 514 states have internal predecessors, (728), 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 21:03:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 728 transitions. [2022-11-02 21:03:24,026 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 728 transitions. Word has length 160 [2022-11-02 21:03:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:24,026 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 728 transitions. [2022-11-02 21:03:24,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 21:03:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 728 transitions. [2022-11-02 21:03:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:24,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:24,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:24,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:24,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:24,243 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash 208076741, now seen corresponding path program 1 times [2022-11-02 21:03:24,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:24,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813794025] [2022-11-02 21:03:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:24,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:24,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:24,247 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:24,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:03:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:25,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:25,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:26,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:27,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:27,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813794025] [2022-11-02 21:03:27,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813794025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:27,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:27,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:27,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291616897] [2022-11-02 21:03:27,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:27,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:27,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:27,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:27,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:27,771 INFO L87 Difference]: Start difference. First operand 515 states and 728 transitions. Second operand has 16 states, 16 states have (on average 19.375) internal successors, (310), 16 states have internal predecessors, (310), 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 21:03:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:28,167 INFO L93 Difference]: Finished difference Result 1100 states and 1563 transitions. [2022-11-02 21:03:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:28,167 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.375) internal successors, (310), 16 states have internal predecessors, (310), 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 160 [2022-11-02 21:03:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:28,171 INFO L225 Difference]: With dead ends: 1100 [2022-11-02 21:03:28,172 INFO L226 Difference]: Without dead ends: 943 [2022-11-02 21:03:28,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:28,173 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1194 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:28,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 2228 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-11-02 21:03:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-02 21:03:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 814. [2022-11-02 21:03:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4022140221402215) internal successors, (1140), 813 states have internal predecessors, (1140), 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 21:03:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1140 transitions. [2022-11-02 21:03:28,218 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1140 transitions. Word has length 160 [2022-11-02 21:03:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:28,219 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1140 transitions. [2022-11-02 21:03:28,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.375) internal successors, (310), 16 states have internal predecessors, (310), 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 21:03:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1140 transitions. [2022-11-02 21:03:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:28,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:28,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:28,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:28,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:28,435 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash -184950269, now seen corresponding path program 1 times [2022-11-02 21:03:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:28,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367692807] [2022-11-02 21:03:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:28,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:28,439 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:28,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:03:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:29,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:29,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:30,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:31,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:31,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367692807] [2022-11-02 21:03:31,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367692807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:31,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:31,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784049228] [2022-11-02 21:03:31,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:31,868 INFO L87 Difference]: Start difference. First operand 814 states and 1140 transitions. Second operand has 16 states, 16 states have (on average 19.5) internal successors, (312), 16 states have internal predecessors, (312), 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 21:03:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:32,262 INFO L93 Difference]: Finished difference Result 1668 states and 2342 transitions. [2022-11-02 21:03:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:32,262 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.5) internal successors, (312), 16 states have internal predecessors, (312), 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 160 [2022-11-02 21:03:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:32,269 INFO L225 Difference]: With dead ends: 1668 [2022-11-02 21:03:32,269 INFO L226 Difference]: Without dead ends: 1511 [2022-11-02 21:03:32,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:03:32,271 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1076 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:32,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2199 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-11-02 21:03:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-11-02 21:03:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1384. [2022-11-02 21:03:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.3890093998553867) internal successors, (1921), 1383 states have internal predecessors, (1921), 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 21:03:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1921 transitions. [2022-11-02 21:03:32,309 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1921 transitions. Word has length 160 [2022-11-02 21:03:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:32,310 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1921 transitions. [2022-11-02 21:03:32,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.5) internal successors, (312), 16 states have internal predecessors, (312), 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 21:03:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1921 transitions. [2022-11-02 21:03:32,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:32,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:32,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:32,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 21:03:32,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:32,535 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -994296895, now seen corresponding path program 1 times [2022-11-02 21:03:32,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:32,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925263850] [2022-11-02 21:03:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:32,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:32,539 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:32,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:03:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:33,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:33,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:34,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:35,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:35,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925263850] [2022-11-02 21:03:35,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925263850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:35,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:35,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:35,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893893222] [2022-11-02 21:03:35,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:35,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:35,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:35,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:35,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:35,720 INFO L87 Difference]: Start difference. First operand 1384 states and 1921 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 21:03:36,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:36,178 INFO L93 Difference]: Finished difference Result 2561 states and 3537 transitions. [2022-11-02 21:03:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:36,179 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 160 [2022-11-02 21:03:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:36,188 INFO L225 Difference]: With dead ends: 2561 [2022-11-02 21:03:36,188 INFO L226 Difference]: Without dead ends: 2404 [2022-11-02 21:03:36,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:36,190 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 327 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:36,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 2351 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2022-11-02 21:03:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-11-02 21:03:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2404. [2022-11-02 21:03:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2403 states have (on average 1.3745318352059925) internal successors, (3303), 2403 states have internal predecessors, (3303), 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 21:03:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3303 transitions. [2022-11-02 21:03:36,291 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 3303 transitions. Word has length 160 [2022-11-02 21:03:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:36,292 INFO L495 AbstractCegarLoop]: Abstraction has 2404 states and 3303 transitions. [2022-11-02 21:03:36,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 21:03:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 3303 transitions. [2022-11-02 21:03:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:36,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:36,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:36,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:36,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:36,521 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:36,522 INFO L85 PathProgramCache]: Analyzing trace with hash -994237313, now seen corresponding path program 1 times [2022-11-02 21:03:36,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:36,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595332658] [2022-11-02 21:03:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:36,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:36,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:36,525 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:36,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:03:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:37,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 21:03:37,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:39,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:50,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:50,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595332658] [2022-11-02 21:03:50,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595332658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:50,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:50,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:03:50,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104043122] [2022-11-02 21:03:50,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:50,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:03:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:03:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:03:50,084 INFO L87 Difference]: Start difference. First operand 2404 states and 3303 transitions. Second operand has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:03:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:50,378 INFO L93 Difference]: Finished difference Result 4760 states and 6540 transitions. [2022-11-02 21:03:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:50,379 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 160 [2022-11-02 21:03:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:50,393 INFO L225 Difference]: With dead ends: 4760 [2022-11-02 21:03:50,394 INFO L226 Difference]: Without dead ends: 4758 [2022-11-02 21:03:50,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=91, Invalid=287, Unknown=2, NotChecked=0, Total=380 [2022-11-02 21:03:50,396 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 622 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:50,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2445 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-02 21:03:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2022-11-02 21:03:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 4740. [2022-11-02 21:03:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4739 states have (on average 1.3747626081451783) internal successors, (6515), 4739 states have internal predecessors, (6515), 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 21:03:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 6515 transitions. [2022-11-02 21:03:50,538 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 6515 transitions. Word has length 160 [2022-11-02 21:03:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:50,539 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 6515 transitions. [2022-11-02 21:03:50,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:03:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 6515 transitions. [2022-11-02 21:03:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:03:50,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:50,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:50,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-02 21:03:50,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:50,775 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1347325695, now seen corresponding path program 1 times [2022-11-02 21:03:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:50,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045818455] [2022-11-02 21:03:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:50,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:50,780 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:50,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:03:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 21:03:51,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:54,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:03,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:03,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045818455] [2022-11-02 21:04:03,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045818455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:03,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:03,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928933504] [2022-11-02 21:04:03,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:03,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:04:03,721 INFO L87 Difference]: Start difference. First operand 4740 states and 6515 transitions. Second operand has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:04:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:04,161 INFO L93 Difference]: Finished difference Result 5754 states and 7846 transitions. [2022-11-02 21:04:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:04:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 160 [2022-11-02 21:04:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:04,196 INFO L225 Difference]: With dead ends: 5754 [2022-11-02 21:04:04,196 INFO L226 Difference]: Without dead ends: 5752 [2022-11-02 21:04:04,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:04:04,198 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 611 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:04,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 3747 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-02 21:04:04,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5752 states. [2022-11-02 21:04:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5752 to 5732. [2022-11-02 21:04:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5731 states have (on average 1.3643343221078346) internal successors, (7819), 5731 states have internal predecessors, (7819), 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 21:04:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 7819 transitions. [2022-11-02 21:04:04,387 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 7819 transitions. Word has length 160 [2022-11-02 21:04:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:04,389 INFO L495 AbstractCegarLoop]: Abstraction has 5732 states and 7819 transitions. [2022-11-02 21:04:04,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:04:04,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 7819 transitions. [2022-11-02 21:04:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:04:04,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:04,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:04,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 21:04:04,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:04,627 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:04,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:04,627 INFO L85 PathProgramCache]: Analyzing trace with hash 919055491, now seen corresponding path program 1 times [2022-11-02 21:04:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:04,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64011019] [2022-11-02 21:04:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:04,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:04,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:04,631 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:04,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:04:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 21:04:05,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:08,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:19,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64011019] [2022-11-02 21:04:19,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64011019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:19,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:19,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742823305] [2022-11-02 21:04:19,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:19,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:04:19,133 INFO L87 Difference]: Start difference. First operand 5732 states and 7819 transitions. Second operand has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:04:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:19,504 INFO L93 Difference]: Finished difference Result 7128 states and 9632 transitions. [2022-11-02 21:04:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:19,505 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 160 [2022-11-02 21:04:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:19,514 INFO L225 Difference]: With dead ends: 7128 [2022-11-02 21:04:19,514 INFO L226 Difference]: Without dead ends: 7126 [2022-11-02 21:04:19,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:04:19,517 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 730 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:19,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 2484 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-02 21:04:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2022-11-02 21:04:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 7108. [2022-11-02 21:04:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 7107 states have (on average 1.3517658646404953) internal successors, (9607), 7107 states have internal predecessors, (9607), 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 21:04:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 9607 transitions. [2022-11-02 21:04:19,777 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 9607 transitions. Word has length 160 [2022-11-02 21:04:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:19,778 INFO L495 AbstractCegarLoop]: Abstraction has 7108 states and 9607 transitions. [2022-11-02 21:04:19,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:04:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 9607 transitions. [2022-11-02 21:04:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:04:19,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:19,793 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:19,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:20,007 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -903425021, now seen corresponding path program 1 times [2022-11-02 21:04:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:20,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808532306] [2022-11-02 21:04:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:20,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:20,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:20,011 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:04:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:20,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:04:20,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:21,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:21,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:21,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808532306] [2022-11-02 21:04:21,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808532306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:21,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:21,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:21,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952678002] [2022-11-02 21:04:21,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:21,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:21,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:21,633 INFO L87 Difference]: Start difference. First operand 7108 states and 9607 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:04:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:22,180 INFO L93 Difference]: Finished difference Result 9557 states and 12594 transitions. [2022-11-02 21:04:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:04:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 160 [2022-11-02 21:04:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:22,196 INFO L225 Difference]: With dead ends: 9557 [2022-11-02 21:04:22,197 INFO L226 Difference]: Without dead ends: 8801 [2022-11-02 21:04:22,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:22,202 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 124 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:22,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1479 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 14 Unchecked, 0.3s Time] [2022-11-02 21:04:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8801 states. [2022-11-02 21:04:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8801 to 7220. [2022-11-02 21:04:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7220 states, 7219 states have (on average 1.350741099875329) internal successors, (9751), 7219 states have internal predecessors, (9751), 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 21:04:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7220 states to 7220 states and 9751 transitions. [2022-11-02 21:04:22,487 INFO L78 Accepts]: Start accepts. Automaton has 7220 states and 9751 transitions. Word has length 160 [2022-11-02 21:04:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:22,488 INFO L495 AbstractCegarLoop]: Abstraction has 7220 states and 9751 transitions. [2022-11-02 21:04:22,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 21:04:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7220 states and 9751 transitions. [2022-11-02 21:04:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:04:22,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:22,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:22,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-02 21:04:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:22,719 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash -243893499, now seen corresponding path program 1 times [2022-11-02 21:04:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025328163] [2022-11-02 21:04:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:22,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:22,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:22,727 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:22,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:04:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:04:23,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:27,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:35,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:35,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025328163] [2022-11-02 21:04:35,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025328163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:35,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:35,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:35,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76288284] [2022-11-02 21:04:35,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:35,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:35,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:35,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:04:35,309 INFO L87 Difference]: Start difference. First operand 7220 states and 9751 transitions. Second operand has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:04:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:35,733 INFO L93 Difference]: Finished difference Result 8168 states and 10968 transitions. [2022-11-02 21:04:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:35,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 160 [2022-11-02 21:04:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:35,747 INFO L225 Difference]: With dead ends: 8168 [2022-11-02 21:04:35,747 INFO L226 Difference]: Without dead ends: 8166 [2022-11-02 21:04:35,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:04:35,750 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 455 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:35,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 2475 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 40 Unchecked, 0.0s Time] [2022-11-02 21:04:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8166 states. [2022-11-02 21:04:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8166 to 8148. [2022-11-02 21:04:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8148 states, 8147 states have (on average 1.343193813673745) internal successors, (10943), 8147 states have internal predecessors, (10943), 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 21:04:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8148 states to 8148 states and 10943 transitions. [2022-11-02 21:04:36,063 INFO L78 Accepts]: Start accepts. Automaton has 8148 states and 10943 transitions. Word has length 160 [2022-11-02 21:04:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:36,064 INFO L495 AbstractCegarLoop]: Abstraction has 8148 states and 10943 transitions. [2022-11-02 21:04:36,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 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 21:04:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8148 states and 10943 transitions. [2022-11-02 21:04:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:04:36,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:36,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:36,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:36,303 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2022487687, now seen corresponding path program 1 times [2022-11-02 21:04:36,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:36,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227198307] [2022-11-02 21:04:36,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:36,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:36,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:36,306 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:36,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01b2a86a-3e8d-49b9-913a-bbcea4f2b56d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:04:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:37,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 21:04:37,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:41,068 INFO L328 TraceCheckSpWp]: Computing backward predicates...