./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.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_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/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_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/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_27524d33-4bb5-431d-bb86-b36890314109/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 3c19fc876fb4e502e836ce23f73293bbac13504cea2f9daf8d97f1fbae012354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:43:24,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:24,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:24,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:24,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:24,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:24,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:24,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:24,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:24,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:24,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:24,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:24,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:24,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:24,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:24,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:24,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:24,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:24,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:24,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:24,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:24,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:24,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:24,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:24,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:24,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:24,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:24,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:24,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:24,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:24,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:24,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:24,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:24,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:24,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:24,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:24,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:24,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:24,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:24,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:24,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:24,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:43:24,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:24,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:24,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:24,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:24,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:43:24,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:43:24,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:24,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:24,405 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:24,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:24,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:24,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:24,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:43:24,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:43:24,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:43:24,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:24,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:24,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:43:24,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:24,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:24,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:43:24,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:24,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:24,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:43:24,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:43:24,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:24,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:43:24,412 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:43:24,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:43:24,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:43:24,413 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_27524d33-4bb5-431d-bb86-b36890314109/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c19fc876fb4e502e836ce23f73293bbac13504cea2f9daf8d97f1fbae012354 [2022-11-02 20:43:24,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:24,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:24,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:24,803 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:24,804 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:24,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c [2022-11-02 20:43:24,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/585511523/94a7b4483c6044d7bd2bb1aa62898b6f/FLAG54b238236 [2022-11-02 20:43:25,607 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:25,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c [2022-11-02 20:43:25,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/585511523/94a7b4483c6044d7bd2bb1aa62898b6f/FLAG54b238236 [2022-11-02 20:43:25,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/585511523/94a7b4483c6044d7bd2bb1aa62898b6f [2022-11-02 20:43:25,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:25,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:25,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:25,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:25,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:25,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:25" (1/1) ... [2022-11-02 20:43:25,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fed99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:25, skipping insertion in model container [2022-11-02 20:43:25,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:25" (1/1) ... [2022-11-02 20:43:25,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:25,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:26,198 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_27524d33-4bb5-431d-bb86-b36890314109/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c[1014,1027] [2022-11-02 20:43:26,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:26,545 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:43:26,556 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_27524d33-4bb5-431d-bb86-b36890314109/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c[1014,1027] [2022-11-02 20:43:26,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:26,755 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:43:26,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26 WrapperNode [2022-11-02 20:43:26,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:26,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:26,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:43:26,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:43:26,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:26,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,107 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2329 [2022-11-02 20:43:27,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:27,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:43:27,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:43:27,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:43:27,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:43:27,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:43:27,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:43:27,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:43:27,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (1/1) ... [2022-11-02 20:43:27,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:27,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:27,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:27,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:43:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:43:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:43:28,026 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:43:28,028 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:16,603 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:16,615 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:16,615 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:44:16,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:16 BoogieIcfgContainer [2022-11-02 20:44:16,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:16,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:44:16,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:44:16,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:44:16,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:43:25" (1/3) ... [2022-11-02 20:44:16,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7631611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:16, skipping insertion in model container [2022-11-02 20:44:16,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:26" (2/3) ... [2022-11-02 20:44:16,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7631611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:16, skipping insertion in model container [2022-11-02 20:44:16,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:16" (3/3) ... [2022-11-02 20:44:16,650 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.4.prop1-func-interl.c [2022-11-02 20:44:16,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:44:16,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:44:16,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:16,822 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;@4c5d9758, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:16,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:44:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:16,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:16,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:16,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:16,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1165686489, now seen corresponding path program 1 times [2022-11-02 20:44:16,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:16,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299753235] [2022-11-02 20:44:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:16,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:18,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:18,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299753235] [2022-11-02 20:44:18,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299753235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:18,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:18,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231719601] [2022-11-02 20:44:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:18,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:18,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:18,140 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 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 20:44:20,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:22,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:22,648 INFO L93 Difference]: Finished difference Result 381 states and 569 transitions. [2022-11-02 20:44:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:22,651 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 20:44:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:22,664 INFO L225 Difference]: With dead ends: 381 [2022-11-02 20:44:22,664 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 20:44:22,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:22,672 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 269 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:22,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 620 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 20:44:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 20:44:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 145. [2022-11-02 20:44:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4791666666666667) internal successors, (213), 144 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 213 transitions. [2022-11-02 20:44:22,754 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 213 transitions. Word has length 13 [2022-11-02 20:44:22,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:22,755 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 213 transitions. [2022-11-02 20:44:22,755 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 20:44:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 213 transitions. [2022-11-02 20:44:22,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:22,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:22,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:22,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:44:22,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:22,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:22,758 INFO L85 PathProgramCache]: Analyzing trace with hash 772659479, now seen corresponding path program 1 times [2022-11-02 20:44:22,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:22,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620592939] [2022-11-02 20:44:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:22,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:23,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:23,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620592939] [2022-11-02 20:44:23,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620592939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:23,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:23,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924748490] [2022-11-02 20:44:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:23,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:23,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:23,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:23,188 INFO L87 Difference]: Start difference. First operand 145 states and 213 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 20:44:26,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:28,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:28,232 INFO L93 Difference]: Finished difference Result 425 states and 628 transitions. [2022-11-02 20:44:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:28,237 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 20:44:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:28,239 INFO L225 Difference]: With dead ends: 425 [2022-11-02 20:44:28,239 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:44:28,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:28,241 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 407 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:28,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 618 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 20:44:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:44:28,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 147. [2022-11-02 20:44:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4726027397260273) internal successors, (215), 146 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 215 transitions. [2022-11-02 20:44:28,256 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 215 transitions. Word has length 13 [2022-11-02 20:44:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:28,257 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 215 transitions. [2022-11-02 20:44:28,257 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 20:44:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 215 transitions. [2022-11-02 20:44:28,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:28,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:28,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:28,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:44:28,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash -36687147, now seen corresponding path program 1 times [2022-11-02 20:44:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:28,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779614318] [2022-11-02 20:44:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:28,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:28,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:28,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779614318] [2022-11-02 20:44:28,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779614318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:28,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:28,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:28,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362780157] [2022-11-02 20:44:28,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:28,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:28,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:28,655 INFO L87 Difference]: Start difference. First operand 147 states and 215 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 20:44:30,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:33,005 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 20:44:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:33,068 INFO L93 Difference]: Finished difference Result 377 states and 555 transitions. [2022-11-02 20:44:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:33,069 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 20:44:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:33,071 INFO L225 Difference]: With dead ends: 377 [2022-11-02 20:44:33,071 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 20:44:33,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:33,073 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 257 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:33,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 620 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 20:44:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 20:44:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 149. [2022-11-02 20:44:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4662162162162162) internal successors, (217), 148 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 217 transitions. [2022-11-02 20:44:33,086 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 217 transitions. Word has length 13 [2022-11-02 20:44:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:33,087 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 217 transitions. [2022-11-02 20:44:33,087 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 20:44:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 217 transitions. [2022-11-02 20:44:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:33,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:33,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:33,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:44:33,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 20571155, now seen corresponding path program 1 times [2022-11-02 20:44:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:33,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661479499] [2022-11-02 20:44:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661479499] [2022-11-02 20:44:33,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661479499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:33,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:33,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:33,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100697164] [2022-11-02 20:44:33,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:33,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:33,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:33,436 INFO L87 Difference]: Start difference. First operand 149 states and 217 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 20:44:34,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:36,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:38,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:38,965 INFO L93 Difference]: Finished difference Result 425 states and 626 transitions. [2022-11-02 20:44:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:39,008 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 20:44:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,009 INFO L225 Difference]: With dead ends: 425 [2022-11-02 20:44:39,009 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:44:39,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:39,011 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 395 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:39,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 620 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 20:44:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:44:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 151. [2022-11-02 20:44:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.46) internal successors, (219), 150 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2022-11-02 20:44:39,023 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 13 [2022-11-02 20:44:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:39,023 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2022-11-02 20:44:39,024 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 20:44:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2022-11-02 20:44:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:39,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:39,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:39,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:44:39,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,026 INFO L85 PathProgramCache]: Analyzing trace with hash 20630737, now seen corresponding path program 1 times [2022-11-02 20:44:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865703623] [2022-11-02 20:44:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:39,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:39,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:39,673 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:39,674 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:44:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:44:39,681 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:44:39,688 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:44:39,771 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:44:39,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:44:39 BoogieIcfgContainer [2022-11-02 20:44:39,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:44:39,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:44:39,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:44:39,807 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:44:39,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:16" (3/4) ... [2022-11-02 20:44:39,811 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:44:39,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:44:39,812 INFO L158 Benchmark]: Toolchain (without parser) took 74008.80ms. Allocated memory was 102.8MB in the beginning and 815.8MB in the end (delta: 713.0MB). Free memory was 60.7MB in the beginning and 589.8MB in the end (delta: -529.2MB). Peak memory consumption was 185.5MB. Max. memory is 16.1GB. [2022-11-02 20:44:39,820 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:44:39,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 946.49ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 60.5MB in the beginning and 91.3MB in the end (delta: -30.8MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-02 20:44:39,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 351.57ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 80.8MB in the end (delta: 10.5MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2022-11-02 20:44:39,821 INFO L158 Benchmark]: Boogie Preprocessor took 288.99ms. Allocated memory is still 148.9MB. Free memory was 80.8MB in the beginning and 63.2MB in the end (delta: 17.6MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-11-02 20:44:39,822 INFO L158 Benchmark]: RCFGBuilder took 49220.02ms. Allocated memory was 148.9MB in the beginning and 815.8MB in the end (delta: 666.9MB). Free memory was 63.2MB in the beginning and 660.1MB in the end (delta: -596.9MB). Peak memory consumption was 477.9MB. Max. memory is 16.1GB. [2022-11-02 20:44:39,822 INFO L158 Benchmark]: TraceAbstraction took 23184.08ms. Allocated memory is still 815.8MB. Free memory was 659.1MB in the beginning and 590.9MB in the end (delta: 68.2MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2022-11-02 20:44:39,823 INFO L158 Benchmark]: Witness Printer took 4.90ms. Allocated memory is still 815.8MB. Free memory was 590.9MB in the beginning and 589.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:44:39,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 946.49ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 60.5MB in the beginning and 91.3MB in the end (delta: -30.8MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 351.57ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 80.8MB in the end (delta: 10.5MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 288.99ms. Allocated memory is still 148.9MB. Free memory was 80.8MB in the beginning and 63.2MB in the end (delta: 17.6MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * RCFGBuilder took 49220.02ms. Allocated memory was 148.9MB in the beginning and 815.8MB in the end (delta: 666.9MB). Free memory was 63.2MB in the beginning and 660.1MB in the end (delta: -596.9MB). Peak memory consumption was 477.9MB. Max. memory is 16.1GB. * TraceAbstraction took 23184.08ms. Allocated memory is still 815.8MB. Free memory was 659.1MB in the beginning and 590.9MB in the end (delta: 68.2MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. * Witness Printer took 4.90ms. Allocated memory is still 815.8MB. Free memory was 590.9MB in the beginning and 589.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 277, overapproximation of bitwiseAnd at line 273. 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_3 var_115 = 0; [L43] const SORT_2 var_120 = 3; [L44] const SORT_2 var_126 = 2; [L45] const SORT_2 var_132 = 1; [L46] const SORT_4 var_156 = 2; [L47] const SORT_4 var_170 = 3; [L48] const SORT_4 var_313 = 4; [L49] const SORT_2 var_338 = 4; [L51] SORT_1 input_93; [L52] SORT_1 input_95; [L53] SORT_1 input_99; [L54] SORT_1 input_100; [L55] SORT_1 input_104; [L56] SORT_1 input_105; [L57] SORT_1 input_109; [L58] SORT_1 input_110; [L59] SORT_1 input_114; [L60] SORT_1 input_121; [L61] SORT_1 input_127; [L62] SORT_1 input_133; [L63] SORT_1 input_184; [L64] SORT_1 input_187; [L65] SORT_1 input_191; [L66] SORT_1 input_198; [L67] SORT_1 input_201; [L68] SORT_1 input_205; [L69] SORT_1 input_212; [L70] SORT_1 input_215; [L71] SORT_1 input_219; [L72] SORT_1 input_226; [L73] SORT_1 input_229; [L74] SORT_1 input_233; [L75] SORT_1 input_243; [L76] SORT_1 input_261; [L77] SORT_1 input_279; [L78] SORT_1 input_297; [L80] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L87] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L88] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L89] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L90] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L91] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L92] SORT_2 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_2 init_7_arg_1 = var_5; [L119] state_6 = init_7_arg_1 [L120] SORT_2 init_9_arg_1 = var_5; [L121] state_8 = init_9_arg_1 [L122] SORT_2 init_11_arg_1 = var_5; [L123] state_10 = init_11_arg_1 [L124] SORT_2 init_13_arg_1 = var_5; [L125] state_12 = init_13_arg_1 [L126] SORT_2 init_15_arg_1 = var_5; [L127] state_14 = init_15_arg_1 [L128] SORT_2 init_17_arg_1 = var_5; [L129] state_16 = init_17_arg_1 [L130] SORT_2 init_19_arg_1 = var_5; [L131] state_18 = init_19_arg_1 [L132] SORT_2 init_21_arg_1 = var_5; [L133] state_20 = init_21_arg_1 [L134] SORT_2 init_23_arg_1 = var_5; [L135] state_22 = init_23_arg_1 [L136] SORT_2 init_25_arg_1 = var_5; [L137] state_24 = init_25_arg_1 [L138] SORT_2 init_27_arg_1 = var_5; [L139] state_26 = init_27_arg_1 [L140] SORT_2 init_29_arg_1 = var_5; [L141] state_28 = init_29_arg_1 [L142] SORT_2 init_31_arg_1 = var_5; [L143] state_30 = init_31_arg_1 [L144] SORT_2 init_33_arg_1 = var_5; [L145] state_32 = init_33_arg_1 [L146] SORT_2 init_35_arg_1 = var_5; [L147] state_34 = init_35_arg_1 [L148] SORT_2 init_37_arg_1 = var_5; [L149] state_36 = init_37_arg_1 [L150] SORT_1 init_40_arg_1 = var_38; [L151] state_39 = init_40_arg_1 [L152] SORT_1 init_42_arg_1 = var_38; [L153] state_41 = init_42_arg_1 [L154] SORT_1 init_44_arg_1 = var_38; [L155] state_43 = init_44_arg_1 [L156] SORT_1 init_46_arg_1 = var_38; [L157] state_45 = init_46_arg_1 [L158] SORT_1 init_48_arg_1 = var_38; [L159] state_47 = init_48_arg_1 [L160] SORT_1 init_50_arg_1 = var_38; [L161] state_49 = init_50_arg_1 [L162] SORT_1 init_52_arg_1 = var_38; [L163] state_51 = init_52_arg_1 [L164] SORT_1 init_54_arg_1 = var_38; [L165] state_53 = init_54_arg_1 [L166] SORT_1 init_56_arg_1 = var_38; [L167] state_55 = init_56_arg_1 [L168] SORT_1 init_58_arg_1 = var_38; [L169] state_57 = init_58_arg_1 [L170] SORT_1 init_60_arg_1 = var_38; [L171] state_59 = init_60_arg_1 [L172] SORT_1 init_62_arg_1 = var_38; [L173] state_61 = init_62_arg_1 [L174] SORT_1 init_64_arg_1 = var_38; [L175] state_63 = init_64_arg_1 [L176] SORT_1 init_66_arg_1 = var_38; [L177] state_65 = init_66_arg_1 [L178] SORT_1 init_68_arg_1 = var_38; [L179] state_67 = init_68_arg_1 [L180] SORT_1 init_70_arg_1 = var_38; [L181] state_69 = init_70_arg_1 [L182] SORT_1 init_72_arg_1 = var_38; [L183] state_71 = init_72_arg_1 [L184] SORT_1 init_74_arg_1 = var_38; [L185] state_73 = init_74_arg_1 [L186] SORT_1 init_76_arg_1 = var_38; [L187] state_75 = init_76_arg_1 [L188] SORT_1 init_78_arg_1 = var_38; [L189] state_77 = init_78_arg_1 [L190] SORT_1 init_80_arg_1 = var_38; [L191] 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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, var_5=0, var_81=1, var_82=0, var_94=0] [L194] input_93 = __VERIFIER_nondet_uchar() [L195] input_93 = input_93 & mask_SORT_1 [L196] input_95 = __VERIFIER_nondet_uchar() [L197] input_95 = input_95 & mask_SORT_1 [L198] input_99 = __VERIFIER_nondet_uchar() [L199] input_99 = input_99 & mask_SORT_1 [L200] input_100 = __VERIFIER_nondet_uchar() [L201] input_100 = input_100 & mask_SORT_1 [L202] input_104 = __VERIFIER_nondet_uchar() [L203] input_104 = input_104 & mask_SORT_1 [L204] input_105 = __VERIFIER_nondet_uchar() [L205] input_105 = input_105 & mask_SORT_1 [L206] input_109 = __VERIFIER_nondet_uchar() [L207] input_109 = input_109 & mask_SORT_1 [L208] input_110 = __VERIFIER_nondet_uchar() [L209] input_110 = input_110 & mask_SORT_1 [L210] input_114 = __VERIFIER_nondet_uchar() [L211] input_114 = input_114 & mask_SORT_1 [L212] input_121 = __VERIFIER_nondet_uchar() [L213] input_121 = input_121 & mask_SORT_1 [L214] input_127 = __VERIFIER_nondet_uchar() [L215] input_127 = input_127 & mask_SORT_1 [L216] input_133 = __VERIFIER_nondet_uchar() [L217] input_133 = input_133 & mask_SORT_1 [L218] input_184 = __VERIFIER_nondet_uchar() [L219] input_184 = input_184 & mask_SORT_1 [L220] input_187 = __VERIFIER_nondet_uchar() [L221] input_187 = input_187 & mask_SORT_1 [L222] input_191 = __VERIFIER_nondet_uchar() [L223] input_191 = input_191 & mask_SORT_1 [L224] input_198 = __VERIFIER_nondet_uchar() [L225] input_198 = input_198 & mask_SORT_1 [L226] input_201 = __VERIFIER_nondet_uchar() [L227] input_201 = input_201 & mask_SORT_1 [L228] input_205 = __VERIFIER_nondet_uchar() [L229] input_205 = input_205 & mask_SORT_1 [L230] input_212 = __VERIFIER_nondet_uchar() [L231] input_212 = input_212 & mask_SORT_1 [L232] input_215 = __VERIFIER_nondet_uchar() [L233] input_215 = input_215 & mask_SORT_1 [L234] input_219 = __VERIFIER_nondet_uchar() [L235] input_219 = input_219 & mask_SORT_1 [L236] input_226 = __VERIFIER_nondet_uchar() [L237] input_226 = input_226 & mask_SORT_1 [L238] input_229 = __VERIFIER_nondet_uchar() [L239] input_229 = input_229 & mask_SORT_1 [L240] input_233 = __VERIFIER_nondet_uchar() [L241] input_233 = input_233 & mask_SORT_1 [L242] input_243 = __VERIFIER_nondet_uchar() [L243] input_261 = __VERIFIER_nondet_uchar() [L244] input_279 = __VERIFIER_nondet_uchar() [L245] input_297 = __VERIFIER_nondet_uchar() [L248] SORT_1 var_83_arg_0 = state_41; [L249] SORT_4 var_83_arg_1 = var_81; [L250] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L251] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L251] SORT_4 var_83 = var_83_arg_0 ? var_83_arg_1 : var_83_arg_2; [L252] SORT_1 var_84_arg_0 = state_51; [L253] SORT_4 var_84_arg_1 = var_81; [L254] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L255] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L255] SORT_4 var_84 = var_84_arg_0 ? var_84_arg_1 : var_84_arg_2; [L256] SORT_4 var_85_arg_0 = var_83; [L257] SORT_4 var_85_arg_1 = var_84; [L258] SORT_4 var_85 = var_85_arg_0 + var_85_arg_1; [L259] SORT_1 var_86_arg_0 = state_61; [L260] SORT_4 var_86_arg_1 = var_81; [L261] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L262] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L262] SORT_4 var_86 = var_86_arg_0 ? var_86_arg_1 : var_86_arg_2; [L263] SORT_4 var_87_arg_0 = var_85; [L264] SORT_4 var_87_arg_1 = var_86; [L265] SORT_4 var_87 = var_87_arg_0 + var_87_arg_1; [L266] SORT_1 var_88_arg_0 = state_71; [L267] SORT_4 var_88_arg_1 = var_81; [L268] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L269] 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_104=0, input_105=0, input_109=1, input_110=1, input_114=0, input_121=0, input_127=1, input_133=0, input_184=1, input_187=0, input_191=1, input_198=0, input_201=0, input_205=0, input_212=0, input_215=0, input_219=1, input_226=1, input_229=0, input_233=0, input_243=3, input_261=4, input_279=1, input_297=2, input_93=0, input_95=0, input_99=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_115=0, var_120=3, var_126=2, var_132=1, var_156=2, var_170=3, var_313=4, var_338=4, var_38=0, 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] [L269] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L270] SORT_4 var_89_arg_0 = var_87; [L271] SORT_4 var_89_arg_1 = var_88; [L272] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L273] var_89 = var_89 & mask_SORT_4 [L274] SORT_4 var_90_arg_0 = var_89; [L275] SORT_4 var_90_arg_1 = var_81; [L276] SORT_1 var_90 = var_90_arg_0 <= var_90_arg_1; [L277] SORT_1 var_91_arg_0 = ~state_79; [L278] var_91_arg_0 = var_91_arg_0 & mask_SORT_1 [L279] SORT_1 var_91_arg_1 = ~var_90; [L280] var_91_arg_1 = var_91_arg_1 & mask_SORT_1 [L281] SORT_1 var_91 = var_91_arg_0 & var_91_arg_1; [L282] var_91 = var_91 & mask_SORT_1 [L283] SORT_1 bad_92_arg_0 = var_91; [L284] 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, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 1328 SdHoareTripleChecker+Valid, 19.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1328 mSDsluCounter, 2478 SdHoareTripleChecker+Invalid, 18.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1649 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 829 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 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=151occurred 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, 448 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s 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 20:44:39,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/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_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/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_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/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_27524d33-4bb5-431d-bb86-b36890314109/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 3c19fc876fb4e502e836ce23f73293bbac13504cea2f9daf8d97f1fbae012354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:44:42,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:44:42,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:44:42,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:44:42,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:44:42,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:44:42,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:44:42,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:44:42,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:44:42,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:44:42,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:44:42,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:44:42,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:44:42,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:44:42,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:44:42,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:44:42,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:44:42,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:44:42,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:44:42,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:44:42,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:44:42,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:44:42,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:44:42,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:44:42,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:44:42,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:44:42,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:44:42,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:44:42,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:44:42,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:44:42,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:44:42,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:44:42,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:44:42,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:44:42,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:44:42,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:44:42,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:44:42,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:44:42,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:44:42,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:44:42,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:44:42,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:44:42,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:44:42,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:44:42,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:44:42,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:44:42,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:44:42,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:44:42,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:44:42,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:44:42,814 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:44:42,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:44:42,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:44:42,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:44:42,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:44:42,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:44:42,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:44:42,818 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:44:42,818 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:44:42,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:44:42,819 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:44:42,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:44:42,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:44:42,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:44:42,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:44:42,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:42,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:44:42,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:44:42,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:44:42,821 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:44:42,821 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:44:42,822 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:44:42,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:44:42,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:44:42,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:44:42,823 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_27524d33-4bb5-431d-bb86-b36890314109/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c19fc876fb4e502e836ce23f73293bbac13504cea2f9daf8d97f1fbae012354 [2022-11-02 20:44:43,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:44:43,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:44:43,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:44:43,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:44:43,347 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:44:43,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c [2022-11-02 20:44:43,435 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/1b9081c44/485154845c51474197c03ae93588b20e/FLAG341bc0350 [2022-11-02 20:44:44,411 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:44:44,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c [2022-11-02 20:44:44,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/1b9081c44/485154845c51474197c03ae93588b20e/FLAG341bc0350 [2022-11-02 20:44:44,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/data/1b9081c44/485154845c51474197c03ae93588b20e [2022-11-02 20:44:44,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:44:44,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:44:44,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:44,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:44:44,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:44:44,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:44" (1/1) ... [2022-11-02 20:44:44,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b9cf15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:44, skipping insertion in model container [2022-11-02 20:44:44,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:44" (1/1) ... [2022-11-02 20:44:44,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:44:44,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:44:44,796 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_27524d33-4bb5-431d-bb86-b36890314109/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c[1014,1027] [2022-11-02 20:44:45,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:45,370 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:44:45,394 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_27524d33-4bb5-431d-bb86-b36890314109/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.4.prop1-func-interl.c[1014,1027] [2022-11-02 20:44:45,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:45,644 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:44:45,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45 WrapperNode [2022-11-02 20:44:45,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:45,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:45,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:44:45,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:44:45,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,865 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2329 [2022-11-02 20:44:45,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:45,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:44:45,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:44:45,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:44:45,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:45,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:46,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:44:46,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:44:46,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:44:46,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:44:46,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (1/1) ... [2022-11-02 20:44:46,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:46,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:46,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:44:46,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:44:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:44:46,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:44:46,862 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:44:46,865 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:49,055 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:49,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:49,069 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:44:49,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:49 BoogieIcfgContainer [2022-11-02 20:44:49,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:49,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:44:49,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:44:49,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:44:49,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:44:44" (1/3) ... [2022-11-02 20:44:49,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592c1c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:49, skipping insertion in model container [2022-11-02 20:44:49,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:45" (2/3) ... [2022-11-02 20:44:49,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592c1c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:49, skipping insertion in model container [2022-11-02 20:44:49,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:49" (3/3) ... [2022-11-02 20:44:49,085 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.4.prop1-func-interl.c [2022-11-02 20:44:49,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:44:49,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:44:49,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:49,208 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;@1364ce56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:49,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:44:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:49,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:49,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:49,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1165686489, now seen corresponding path program 1 times [2022-11-02 20:44:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:44:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765816358] [2022-11-02 20:44:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:49,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:44:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:44:49,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:44:49,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:44:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:49,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:44:49,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:49,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:49,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:44:49,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765816358] [2022-11-02 20:44:49,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765816358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:49,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:49,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:49,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470023622] [2022-11-02 20:44:49,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:44:49,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:49,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:49,991 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.4965517241379311) internal successors, (217), 146 states have internal predecessors, (217), 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 20:44:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:50,370 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2022-11-02 20:44:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:50,383 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 20:44:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:50,402 INFO L225 Difference]: With dead ends: 569 [2022-11-02 20:44:50,402 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:44:50,406 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 20:44:50,410 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 619 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 823 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 20:44:50,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 823 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:44:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:44:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 145. [2022-11-02 20:44:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4791666666666667) internal successors, (213), 144 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 213 transitions. [2022-11-02 20:44:50,471 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 213 transitions. Word has length 13 [2022-11-02 20:44:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:50,472 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 213 transitions. [2022-11-02 20:44:50,472 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 20:44:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 213 transitions. [2022-11-02 20:44:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:50,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:50,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:50,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:50,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:44:50,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash 772659479, now seen corresponding path program 1 times [2022-11-02 20:44:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:44:50,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785556834] [2022-11-02 20:44:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:50,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:44:50,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:44:50,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:44:50,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:44:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:51,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:44:51,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:51,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:51,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:44:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785556834] [2022-11-02 20:44:51,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785556834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:51,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:51,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281135929] [2022-11-02 20:44:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:44:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:51,326 INFO L87 Difference]: Start difference. First operand 145 states and 213 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 20:44:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:51,575 INFO L93 Difference]: Finished difference Result 565 states and 835 transitions. [2022-11-02 20:44:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:51,578 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 20:44:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:51,580 INFO L225 Difference]: With dead ends: 565 [2022-11-02 20:44:51,580 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:44:51,581 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 20:44:51,583 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 613 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 822 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 20:44:51,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 822 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:44:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:44:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 147. [2022-11-02 20:44:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4726027397260273) internal successors, (215), 146 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 215 transitions. [2022-11-02 20:44:51,623 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 215 transitions. Word has length 13 [2022-11-02 20:44:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:51,624 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 215 transitions. [2022-11-02 20:44:51,624 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 20:44:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 215 transitions. [2022-11-02 20:44:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:51,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:51,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:51,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:51,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:44:51,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash -36687147, now seen corresponding path program 1 times [2022-11-02 20:44:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:44:51,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354780657] [2022-11-02 20:44:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:51,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:44:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:44:51,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:44:51,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:44:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:52,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:44:52,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:52,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:52,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:44:52,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354780657] [2022-11-02 20:44:52,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354780657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:52,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:52,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:52,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978390926] [2022-11-02 20:44:52,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:52,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:52,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:44:52,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:52,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:52,401 INFO L87 Difference]: Start difference. First operand 147 states and 215 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 20:44:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:52,647 INFO L93 Difference]: Finished difference Result 565 states and 834 transitions. [2022-11-02 20:44:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:52,649 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 20:44:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:52,652 INFO L225 Difference]: With dead ends: 565 [2022-11-02 20:44:52,652 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:44:52,653 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 20:44:52,654 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 607 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 821 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 20:44:52,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 821 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:44:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:44:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 149. [2022-11-02 20:44:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4662162162162162) internal successors, (217), 148 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 217 transitions. [2022-11-02 20:44:52,666 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 217 transitions. Word has length 13 [2022-11-02 20:44:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:52,667 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 217 transitions. [2022-11-02 20:44:52,667 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 20:44:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 217 transitions. [2022-11-02 20:44:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:52,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:52,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:52,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:52,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:44:52,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:52,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash 20571155, now seen corresponding path program 1 times [2022-11-02 20:44:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:44:52,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539620213] [2022-11-02 20:44:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:52,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:44:52,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:44:52,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:44:52,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:44:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:53,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:44:53,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:53,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:53,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:44:53,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539620213] [2022-11-02 20:44:53,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539620213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:53,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:53,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324226904] [2022-11-02 20:44:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:53,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:44:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:53,448 INFO L87 Difference]: Start difference. First operand 149 states and 217 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 20:44:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:53,627 INFO L93 Difference]: Finished difference Result 565 states and 833 transitions. [2022-11-02 20:44:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:53,630 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 20:44:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:53,632 INFO L225 Difference]: With dead ends: 565 [2022-11-02 20:44:53,632 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 20:44:53,633 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 20:44:53,634 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 601 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 823 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 20:44:53,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 823 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:44:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 20:44:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 151. [2022-11-02 20:44:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.46) internal successors, (219), 150 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2022-11-02 20:44:53,651 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 13 [2022-11-02 20:44:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:53,651 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2022-11-02 20:44:53,652 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 20:44:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2022-11-02 20:44:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:44:53,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:53,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:53,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:53,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:44:53,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:53,876 INFO L85 PathProgramCache]: Analyzing trace with hash 20630737, now seen corresponding path program 1 times [2022-11-02 20:44:53,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:44:53,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222838404] [2022-11-02 20:44:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:53,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:44:53,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:44:53,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:44:53,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:44:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:54,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:44:54,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:54,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:54,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:44:54,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222838404] [2022-11-02 20:44:54,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222838404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:54,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:54,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:44:54,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925305524] [2022-11-02 20:44:54,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:54,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:44:54,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:44:54,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:44:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:44:54,834 INFO L87 Difference]: Start difference. First operand 151 states and 219 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 20:44:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:57,731 INFO L93 Difference]: Finished difference Result 749 states and 1099 transitions. [2022-11-02 20:44:57,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:44:57,734 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 20:44:57,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:57,737 INFO L225 Difference]: With dead ends: 749 [2022-11-02 20:44:57,737 INFO L226 Difference]: Without dead ends: 747 [2022-11-02 20:44:57,738 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 20:44:57,739 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2251 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:57,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 2890 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:44:57,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-02 20:44:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 159. [2022-11-02 20:44:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4556962025316456) internal successors, (230), 158 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 230 transitions. [2022-11-02 20:44:57,756 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 230 transitions. Word has length 13 [2022-11-02 20:44:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:57,757 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 230 transitions. [2022-11-02 20:44:57,757 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 20:44:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 230 transitions. [2022-11-02 20:44:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:44:57,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:57,762 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] [2022-11-02 20:44:57,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:57,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:44:57,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash 154654075, now seen corresponding path program 1 times [2022-11-02 20:44:57,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:44:57,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118531897] [2022-11-02 20:44:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:57,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:44:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:44:57,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:44:57,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:44:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:59,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:44:59,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:59,893 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 20:44:59,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:59,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:44:59,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118531897] [2022-11-02 20:44:59,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118531897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:59,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:59,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839270802] [2022-11-02 20:44:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:59,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:44:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:59,902 INFO L87 Difference]: Start difference. First operand 159 states and 230 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:00,512 INFO L93 Difference]: Finished difference Result 587 states and 863 transitions. [2022-11-02 20:45:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:45:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:00,516 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:45:00,516 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:45:00,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:00,518 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 547 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:00,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 748 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:45:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:45:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 179. [2022-11-02 20:45:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2022-11-02 20:45:00,529 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 152 [2022-11-02 20:45:00,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:00,530 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2022-11-02 20:45:00,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2022-11-02 20:45:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:00,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:00,534 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] [2022-11-02 20:45:00,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:00,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:00,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:00,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1016487677, now seen corresponding path program 1 times [2022-11-02 20:45:00,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:00,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548945824] [2022-11-02 20:45:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:00,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:00,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:00,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:00,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:45:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:01,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:45:01,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:02,550 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 20:45:02,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:02,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:02,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548945824] [2022-11-02 20:45:02,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548945824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:02,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:02,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167536396] [2022-11-02 20:45:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:02,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:02,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:02,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:02,555 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:03,294 INFO L93 Difference]: Finished difference Result 624 states and 914 transitions. [2022-11-02 20:45:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:03,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:03,298 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:45:03,298 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:45:03,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:03,301 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 788 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:03,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1150 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:45:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:45:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 181. [2022-11-02 20:45:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4444444444444444) internal successors, (260), 180 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2022-11-02 20:45:03,319 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 152 [2022-11-02 20:45:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:03,321 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2022-11-02 20:45:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2022-11-02 20:45:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:03,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:03,334 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] [2022-11-02 20:45:03,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:03,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:03,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1504534783, now seen corresponding path program 1 times [2022-11-02 20:45:03,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:03,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819727508] [2022-11-02 20:45:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:03,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:03,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:03,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:03,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:45:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:04,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:45:04,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:05,275 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 20:45:05,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:05,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819727508] [2022-11-02 20:45:05,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819727508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:05,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:05,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496367952] [2022-11-02 20:45:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:05,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:05,280 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:05,944 INFO L93 Difference]: Finished difference Result 624 states and 913 transitions. [2022-11-02 20:45:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:05,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:05,948 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:45:05,948 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:45:05,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:05,950 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 781 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:05,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1146 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:45:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:45:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 183. [2022-11-02 20:45:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.4395604395604396) internal successors, (262), 182 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 262 transitions. [2022-11-02 20:45:05,960 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 262 transitions. Word has length 152 [2022-11-02 20:45:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:05,961 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 262 transitions. [2022-11-02 20:45:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 262 transitions. [2022-11-02 20:45:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:05,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:05,964 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] [2022-11-02 20:45:05,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:06,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:06,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:06,179 INFO L85 PathProgramCache]: Analyzing trace with hash 222362497, now seen corresponding path program 1 times [2022-11-02 20:45:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:06,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443465650] [2022-11-02 20:45:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:06,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:06,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:06,182 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:06,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:45:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:07,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:45:07,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:07,931 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 20:45:07,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:07,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:07,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443465650] [2022-11-02 20:45:07,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443465650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:07,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:07,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:07,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869467685] [2022-11-02 20:45:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:07,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:07,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:07,935 INFO L87 Difference]: Start difference. First operand 183 states and 262 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:08,584 INFO L93 Difference]: Finished difference Result 624 states and 912 transitions. [2022-11-02 20:45:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:08,588 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:45:08,588 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:45:08,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:08,589 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 774 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:08,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1142 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:45:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:45:08,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 185. [2022-11-02 20:45:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.434782608695652) internal successors, (264), 184 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 264 transitions. [2022-11-02 20:45:08,600 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 264 transitions. Word has length 152 [2022-11-02 20:45:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:08,600 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 264 transitions. [2022-11-02 20:45:08,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 264 transitions. [2022-11-02 20:45:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:08,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:08,603 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] [2022-11-02 20:45:08,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:08,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:08,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1499640189, now seen corresponding path program 1 times [2022-11-02 20:45:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:08,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329833899] [2022-11-02 20:45:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:08,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:08,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:45:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:45:09,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:10,636 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 20:45:10,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:10,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:10,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329833899] [2022-11-02 20:45:10,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329833899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:10,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:10,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:10,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131806260] [2022-11-02 20:45:10,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:10,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:10,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:10,640 INFO L87 Difference]: Start difference. First operand 185 states and 264 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:11,535 INFO L93 Difference]: Finished difference Result 624 states and 911 transitions. [2022-11-02 20:45:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:11,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:11,539 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:45:11,539 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:45:11,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:11,540 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 766 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:11,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1091 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:45:11,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:45:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 187. [2022-11-02 20:45:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.4301075268817205) internal successors, (266), 186 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 266 transitions. [2022-11-02 20:45:11,550 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 266 transitions. Word has length 152 [2022-11-02 20:45:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:11,550 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 266 transitions. [2022-11-02 20:45:11,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 266 transitions. [2022-11-02 20:45:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:11,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:11,553 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] [2022-11-02 20:45:11,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:11,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:11,770 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:11,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash 429292037, now seen corresponding path program 1 times [2022-11-02 20:45:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:11,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110569894] [2022-11-02 20:45:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:11,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:11,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:11,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:11,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:45:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:12,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:45:12,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:13,439 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 20:45:13,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:13,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:13,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110569894] [2022-11-02 20:45:13,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110569894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:13,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:13,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719987039] [2022-11-02 20:45:13,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:13,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:13,442 INFO L87 Difference]: Start difference. First operand 187 states and 266 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:14,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:14,334 INFO L93 Difference]: Finished difference Result 632 states and 922 transitions. [2022-11-02 20:45:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:14,338 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:45:14,338 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:45:14,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:14,340 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 971 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:14,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1483 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:45:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:45:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 191. [2022-11-02 20:45:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4263157894736842) internal successors, (271), 190 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2022-11-02 20:45:14,351 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 152 [2022-11-02 20:45:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:14,351 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2022-11-02 20:45:14,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2022-11-02 20:45:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:14,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:14,354 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] [2022-11-02 20:45:14,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:14,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:14,571 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1218070905, now seen corresponding path program 1 times [2022-11-02 20:45:14,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:14,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352573064] [2022-11-02 20:45:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:14,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:14,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:14,574 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:14,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:45:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:15,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:45:15,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:16,277 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 20:45:16,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:16,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:16,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352573064] [2022-11-02 20:45:16,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352573064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:16,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:16,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678018799] [2022-11-02 20:45:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:16,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:16,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:16,281 INFO L87 Difference]: Start difference. First operand 191 states and 271 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:17,141 INFO L93 Difference]: Finished difference Result 632 states and 921 transitions. [2022-11-02 20:45:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:17,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:17,145 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:45:17,145 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:45:17,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:17,146 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 963 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:17,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1476 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:45:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:45:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 193. [2022-11-02 20:45:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.421875) internal successors, (273), 192 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 273 transitions. [2022-11-02 20:45:17,157 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 273 transitions. Word has length 152 [2022-11-02 20:45:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:17,157 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 273 transitions. [2022-11-02 20:45:17,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:17,158 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 273 transitions. [2022-11-02 20:45:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:17,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:17,160 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] [2022-11-02 20:45:17,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:17,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:17,375 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2038311817, now seen corresponding path program 1 times [2022-11-02 20:45:17,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:17,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167583424] [2022-11-02 20:45:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:17,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:17,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:17,378 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:17,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:45:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:18,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:45:18,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:19,250 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 20:45:19,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:19,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:19,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167583424] [2022-11-02 20:45:19,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167583424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:19,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:19,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720311591] [2022-11-02 20:45:19,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:19,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:19,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:19,254 INFO L87 Difference]: Start difference. First operand 193 states and 273 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:19,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:19,929 INFO L93 Difference]: Finished difference Result 624 states and 908 transitions. [2022-11-02 20:45:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:19,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:19,939 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:45:19,939 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:45:19,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:19,941 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 740 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:19,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1099 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:45:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:45:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 195. [2022-11-02 20:45:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4175257731958764) internal successors, (275), 194 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 275 transitions. [2022-11-02 20:45:19,970 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 275 transitions. Word has length 152 [2022-11-02 20:45:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:19,970 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 275 transitions. [2022-11-02 20:45:19,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 275 transitions. [2022-11-02 20:45:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:19,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:19,973 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] [2022-11-02 20:45:20,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:20,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:20,191 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash -103548661, now seen corresponding path program 1 times [2022-11-02 20:45:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:20,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350036658] [2022-11-02 20:45:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:20,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:20,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:20,193 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:20,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:45:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:21,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:45:21,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:21,921 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 20:45:21,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:21,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350036658] [2022-11-02 20:45:21,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350036658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:21,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:21,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73094905] [2022-11-02 20:45:21,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:21,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:21,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:21,925 INFO L87 Difference]: Start difference. First operand 195 states and 275 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:22,667 INFO L93 Difference]: Finished difference Result 640 states and 931 transitions. [2022-11-02 20:45:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:22,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:22,670 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:45:22,670 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:45:22,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:22,671 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 962 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:22,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1496 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:45:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:45:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 197. [2022-11-02 20:45:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.413265306122449) internal successors, (277), 196 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 277 transitions. [2022-11-02 20:45:22,682 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 277 transitions. Word has length 152 [2022-11-02 20:45:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:22,682 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 277 transitions. [2022-11-02 20:45:22,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 277 transitions. [2022-11-02 20:45:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:22,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:22,685 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] [2022-11-02 20:45:22,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:22,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:22,903 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash 14892813, now seen corresponding path program 1 times [2022-11-02 20:45:22,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:22,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929186217] [2022-11-02 20:45:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:22,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:22,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:22,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:45:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:23,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:45:23,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:24,557 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 20:45:24,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:24,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:24,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929186217] [2022-11-02 20:45:24,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929186217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:24,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:24,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470245057] [2022-11-02 20:45:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:24,560 INFO L87 Difference]: Start difference. First operand 197 states and 277 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:25,376 INFO L93 Difference]: Finished difference Result 640 states and 930 transitions. [2022-11-02 20:45:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:25,378 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:45:25,378 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:45:25,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:25,380 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 954 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:25,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1489 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:45:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:45:25,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 199. [2022-11-02 20:45:25,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4090909090909092) internal successors, (279), 198 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 279 transitions. [2022-11-02 20:45:25,389 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 279 transitions. Word has length 152 [2022-11-02 20:45:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:25,390 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 279 transitions. [2022-11-02 20:45:25,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 279 transitions. [2022-11-02 20:45:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:25,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:25,392 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] [2022-11-02 20:45:25,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:25,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:25,615 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:25,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2018501233, now seen corresponding path program 1 times [2022-11-02 20:45:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617584907] [2022-11-02 20:45:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:25,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:25,618 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:25,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:45:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:26,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:45:26,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:27,246 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 20:45:27,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:27,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:27,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617584907] [2022-11-02 20:45:27,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617584907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:27,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:27,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548406710] [2022-11-02 20:45:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:27,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:27,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:27,250 INFO L87 Difference]: Start difference. First operand 199 states and 279 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:28,072 INFO L93 Difference]: Finished difference Result 640 states and 929 transitions. [2022-11-02 20:45:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:28,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:28,075 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:45:28,075 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:45:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:28,076 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 946 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1482 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:45:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:45:28,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 201. [2022-11-02 20:45:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.405) internal successors, (281), 200 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 281 transitions. [2022-11-02 20:45:28,097 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 281 transitions. Word has length 152 [2022-11-02 20:45:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:28,097 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 281 transitions. [2022-11-02 20:45:28,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 281 transitions. [2022-11-02 20:45:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:28,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:28,099 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] [2022-11-02 20:45:28,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:28,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:28,323 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash 969323665, now seen corresponding path program 1 times [2022-11-02 20:45:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:28,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099326791] [2022-11-02 20:45:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:28,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:28,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:28,326 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:28,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:45:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:45:29,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:29,916 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 20:45:29,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:29,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:29,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099326791] [2022-11-02 20:45:29,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099326791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:29,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:29,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:29,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054696389] [2022-11-02 20:45:29,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:29,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:29,919 INFO L87 Difference]: Start difference. First operand 201 states and 281 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:30,684 INFO L93 Difference]: Finished difference Result 648 states and 940 transitions. [2022-11-02 20:45:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:30,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:30,687 INFO L225 Difference]: With dead ends: 648 [2022-11-02 20:45:30,687 INFO L226 Difference]: Without dead ends: 499 [2022-11-02 20:45:30,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:30,688 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 949 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:30,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1481 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:45:30,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-02 20:45:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 205. [2022-11-02 20:45:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4019607843137254) internal successors, (286), 204 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 286 transitions. [2022-11-02 20:45:30,709 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 286 transitions. Word has length 152 [2022-11-02 20:45:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:30,710 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 286 transitions. [2022-11-02 20:45:30,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 286 transitions. [2022-11-02 20:45:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:30,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:30,717 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] [2022-11-02 20:45:30,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:30,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:30,932 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:30,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1724572525, now seen corresponding path program 1 times [2022-11-02 20:45:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:30,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160526609] [2022-11-02 20:45:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:30,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:30,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:30,936 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:30,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:45:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:31,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:45:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:32,542 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 20:45:32,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:32,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160526609] [2022-11-02 20:45:32,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160526609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:32,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:32,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509033373] [2022-11-02 20:45:32,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:32,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:32,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:32,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:32,547 INFO L87 Difference]: Start difference. First operand 205 states and 286 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:33,353 INFO L93 Difference]: Finished difference Result 648 states and 939 transitions. [2022-11-02 20:45:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:33,355 INFO L225 Difference]: With dead ends: 648 [2022-11-02 20:45:33,355 INFO L226 Difference]: Without dead ends: 499 [2022-11-02 20:45:33,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:33,356 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 941 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:33,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1474 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:45:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-02 20:45:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 207. [2022-11-02 20:45:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3980582524271845) internal successors, (288), 206 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2022-11-02 20:45:33,364 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 152 [2022-11-02 20:45:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:33,364 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2022-11-02 20:45:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2022-11-02 20:45:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:33,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:33,366 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] [2022-11-02 20:45:33,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:33,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:33,583 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash -373187307, now seen corresponding path program 1 times [2022-11-02 20:45:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:33,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766299924] [2022-11-02 20:45:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:33,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:33,586 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:33,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:45:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:34,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:45:34,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:35,277 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 20:45:35,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:35,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:35,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766299924] [2022-11-02 20:45:35,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766299924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:35,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:35,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753964912] [2022-11-02 20:45:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:35,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:35,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:35,281 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:36,061 INFO L93 Difference]: Finished difference Result 648 states and 938 transitions. [2022-11-02 20:45:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:36,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:36,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:36,066 INFO L225 Difference]: With dead ends: 648 [2022-11-02 20:45:36,066 INFO L226 Difference]: Without dead ends: 499 [2022-11-02 20:45:36,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:36,067 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 933 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:36,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1467 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:45:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-02 20:45:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 209. [2022-11-02 20:45:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3942307692307692) internal successors, (290), 208 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 290 transitions. [2022-11-02 20:45:36,078 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 290 transitions. Word has length 152 [2022-11-02 20:45:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:36,079 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 290 transitions. [2022-11-02 20:45:36,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 290 transitions. [2022-11-02 20:45:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:36,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:36,081 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] [2022-11-02 20:45:36,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:36,303 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1256696297, now seen corresponding path program 1 times [2022-11-02 20:45:36,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:36,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078974900] [2022-11-02 20:45:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:36,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:36,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:36,307 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:36,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:45:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:37,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:45:37,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:37,689 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 20:45:37,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:37,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:37,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078974900] [2022-11-02 20:45:37,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078974900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:37,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:37,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:45:37,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317010950] [2022-11-02 20:45:37,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:37,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:45:37,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:45:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:45:37,692 INFO L87 Difference]: Start difference. First operand 209 states and 290 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:37,955 INFO L93 Difference]: Finished difference Result 587 states and 849 transitions. [2022-11-02 20:45:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:45:37,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:37,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:37,958 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:45:37,958 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:45:37,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:37,959 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 374 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:37,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 786 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:45:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:45:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 243. [2022-11-02 20:45:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4049586776859504) internal successors, (340), 242 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 340 transitions. [2022-11-02 20:45:37,968 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 340 transitions. Word has length 152 [2022-11-02 20:45:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:37,969 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 340 transitions. [2022-11-02 20:45:37,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 340 transitions. [2022-11-02 20:45:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:37,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:37,971 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] [2022-11-02 20:45:37,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:38,179 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash -695996519, now seen corresponding path program 1 times [2022-11-02 20:45:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:38,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530941322] [2022-11-02 20:45:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:38,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:38,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:38,182 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:45:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:39,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:45:39,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:39,526 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 20:45:39,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:39,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530941322] [2022-11-02 20:45:39,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530941322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:39,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:39,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644398940] [2022-11-02 20:45:39,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:39,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:39,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:39,530 INFO L87 Difference]: Start difference. First operand 243 states and 340 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:39,865 INFO L93 Difference]: Finished difference Result 688 states and 996 transitions. [2022-11-02 20:45:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:39,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:39,871 INFO L225 Difference]: With dead ends: 688 [2022-11-02 20:45:39,871 INFO L226 Difference]: Without dead ends: 539 [2022-11-02 20:45:39,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:39,873 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 712 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:39,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1173 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:45:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-11-02 20:45:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 245. [2022-11-02 20:45:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.401639344262295) internal successors, (342), 244 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 342 transitions. [2022-11-02 20:45:39,886 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 342 transitions. Word has length 152 [2022-11-02 20:45:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:39,886 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 342 transitions. [2022-11-02 20:45:39,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 342 transitions. [2022-11-02 20:45:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:39,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:39,888 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] [2022-11-02 20:45:39,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:40,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:40,111 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash 564920731, now seen corresponding path program 1 times [2022-11-02 20:45:40,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:40,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002753934] [2022-11-02 20:45:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:40,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:40,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:40,114 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:40,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:45:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:41,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:45:41,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:41,750 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 20:45:41,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:41,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:41,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002753934] [2022-11-02 20:45:41,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002753934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:41,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:41,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:41,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125122388] [2022-11-02 20:45:41,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:41,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:41,752 INFO L87 Difference]: Start difference. First operand 245 states and 342 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:42,268 INFO L93 Difference]: Finished difference Result 640 states and 923 transitions. [2022-11-02 20:45:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:42,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:42,275 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:45:42,275 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:45:42,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:42,276 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 813 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:42,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1369 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:45:42,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:45:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 249. [2022-11-02 20:45:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3991935483870968) internal successors, (347), 248 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 347 transitions. [2022-11-02 20:45:42,288 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 347 transitions. Word has length 152 [2022-11-02 20:45:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:42,288 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 347 transitions. [2022-11-02 20:45:42,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 347 transitions. [2022-11-02 20:45:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:42,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:42,290 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] [2022-11-02 20:45:42,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:42,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:42,507 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1008821405, now seen corresponding path program 1 times [2022-11-02 20:45:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:42,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488805104] [2022-11-02 20:45:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:42,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:42,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:42,511 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:42,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:45:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:43,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:45:43,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:43,992 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 20:45:43,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:43,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:43,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488805104] [2022-11-02 20:45:43,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488805104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:43,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:43,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987209682] [2022-11-02 20:45:43,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:43,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:43,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:43,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:43,995 INFO L87 Difference]: Start difference. First operand 249 states and 347 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:44,571 INFO L93 Difference]: Finished difference Result 632 states and 910 transitions. [2022-11-02 20:45:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:44,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:44,575 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:45:44,575 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:45:44,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:44,577 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 788 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:44,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1331 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:45:44,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:45:44,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 251. [2022-11-02 20:45:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.396) internal successors, (349), 250 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 349 transitions. [2022-11-02 20:45:44,590 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 349 transitions. Word has length 152 [2022-11-02 20:45:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:44,591 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 349 transitions. [2022-11-02 20:45:44,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 349 transitions. [2022-11-02 20:45:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:44,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:44,593 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] [2022-11-02 20:45:44,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:44,815 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1019764705, now seen corresponding path program 1 times [2022-11-02 20:45:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:44,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803787587] [2022-11-02 20:45:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:44,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:44,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:44,819 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:44,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:45:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:45,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:45:45,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:46,344 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 20:45:46,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:46,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:46,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803787587] [2022-11-02 20:45:46,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803787587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:46,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:46,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:45:46,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913713428] [2022-11-02 20:45:46,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:46,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:45:46,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:45:46,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:45:46,346 INFO L87 Difference]: Start difference. First operand 251 states and 349 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:46,586 INFO L93 Difference]: Finished difference Result 587 states and 845 transitions. [2022-11-02 20:45:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:45:46,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:46,590 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:45:46,590 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:45:46,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:46,591 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 340 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:46,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 782 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:45:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:45:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 255. [2022-11-02 20:45:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.3937007874015748) internal successors, (354), 254 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 354 transitions. [2022-11-02 20:45:46,604 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 354 transitions. Word has length 152 [2022-11-02 20:45:46,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:46,605 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 354 transitions. [2022-11-02 20:45:46,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 354 transitions. [2022-11-02 20:45:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:46,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:46,607 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] [2022-11-02 20:45:46,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:46,824 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1372853087, now seen corresponding path program 1 times [2022-11-02 20:45:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:46,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502505425] [2022-11-02 20:45:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:46,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:46,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:46,827 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:46,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:45:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:47,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:45:47,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:48,256 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 20:45:48,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:48,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:48,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502505425] [2022-11-02 20:45:48,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502505425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:48,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:48,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715926485] [2022-11-02 20:45:48,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:48,259 INFO L87 Difference]: Start difference. First operand 255 states and 354 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:48,605 INFO L93 Difference]: Finished difference Result 700 states and 1010 transitions. [2022-11-02 20:45:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:48,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:48,609 INFO L225 Difference]: With dead ends: 700 [2022-11-02 20:45:48,610 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:45:48,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:48,611 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 696 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:48,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1165 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:45:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:45:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 257. [2022-11-02 20:45:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.390625) internal successors, (356), 256 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 356 transitions. [2022-11-02 20:45:48,625 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 356 transitions. Word has length 152 [2022-11-02 20:45:48,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:48,625 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 356 transitions. [2022-11-02 20:45:48,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 356 transitions. [2022-11-02 20:45:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:48,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:48,627 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] [2022-11-02 20:45:48,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:48,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:48,856 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash -479366749, now seen corresponding path program 1 times [2022-11-02 20:45:48,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:48,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903719456] [2022-11-02 20:45:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:48,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:48,860 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:48,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:45:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:49,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:45:49,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:50,502 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 20:45:50,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:50,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:50,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903719456] [2022-11-02 20:45:50,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903719456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:50,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:50,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731977103] [2022-11-02 20:45:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:50,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:50,505 INFO L87 Difference]: Start difference. First operand 257 states and 356 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:51,025 INFO L93 Difference]: Finished difference Result 640 states and 919 transitions. [2022-11-02 20:45:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:51,028 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:45:51,028 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:45:51,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:51,029 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 771 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:51,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1329 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:45:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:45:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 261. [2022-11-02 20:45:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3884615384615384) internal successors, (361), 260 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 361 transitions. [2022-11-02 20:45:51,042 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 361 transitions. Word has length 152 [2022-11-02 20:45:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:51,043 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 361 transitions. [2022-11-02 20:45:51,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 361 transitions. [2022-11-02 20:45:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:51,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:51,044 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] [2022-11-02 20:45:51,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:51,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:51,259 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:51,259 INFO L85 PathProgramCache]: Analyzing trace with hash -55720027, now seen corresponding path program 1 times [2022-11-02 20:45:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:51,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460798590] [2022-11-02 20:45:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:51,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:51,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:51,263 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:51,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:45:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:52,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:45:52,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:52,861 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 20:45:52,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:52,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460798590] [2022-11-02 20:45:52,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460798590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:52,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:52,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:52,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758400981] [2022-11-02 20:45:52,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:52,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:52,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:52,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:52,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:52,864 INFO L87 Difference]: Start difference. First operand 261 states and 361 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:53,417 INFO L93 Difference]: Finished difference Result 632 states and 906 transitions. [2022-11-02 20:45:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:45:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:53,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:53,419 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:45:53,419 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:45:53,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:45:53,420 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 746 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:53,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1291 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:45:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:45:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 263. [2022-11-02 20:45:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3854961832061068) internal successors, (363), 262 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 363 transitions. [2022-11-02 20:45:53,434 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 363 transitions. Word has length 152 [2022-11-02 20:45:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:53,434 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 363 transitions. [2022-11-02 20:45:53,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 363 transitions. [2022-11-02 20:45:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:53,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:53,436 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] [2022-11-02 20:45:53,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:53,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:53,651 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1901087193, now seen corresponding path program 1 times [2022-11-02 20:45:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:53,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605021981] [2022-11-02 20:45:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:53,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:53,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:53,654 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:53,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:45:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:54,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:45:54,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:55,086 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 20:45:55,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:55,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:55,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605021981] [2022-11-02 20:45:55,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605021981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:55,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:55,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:55,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715684426] [2022-11-02 20:45:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:55,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:55,090 INFO L87 Difference]: Start difference. First operand 263 states and 363 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:55,543 INFO L93 Difference]: Finished difference Result 624 states and 893 transitions. [2022-11-02 20:45:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:55,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:55,546 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:45:55,546 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:45:55,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:55,547 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 538 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:55,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1019 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:45:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:45:55,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 265. [2022-11-02 20:45:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.3825757575757576) internal successors, (365), 264 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 365 transitions. [2022-11-02 20:45:55,561 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 365 transitions. Word has length 152 [2022-11-02 20:45:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:55,561 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 365 transitions. [2022-11-02 20:45:55,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 365 transitions. [2022-11-02 20:45:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:55,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:55,563 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] [2022-11-02 20:45:55,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:55,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:55,786 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1241555671, now seen corresponding path program 1 times [2022-11-02 20:45:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:55,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97362765] [2022-11-02 20:45:55,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:55,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:55,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:55,790 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:55,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:45:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:56,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:45:56,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:57,277 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 20:45:57,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:57,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:57,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97362765] [2022-11-02 20:45:57,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97362765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:57,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:57,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:57,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338143701] [2022-11-02 20:45:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:57,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:57,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:57,279 INFO L87 Difference]: Start difference. First operand 265 states and 365 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:57,607 INFO L93 Difference]: Finished difference Result 712 states and 1024 transitions. [2022-11-02 20:45:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:57,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:45:57,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:57,610 INFO L225 Difference]: With dead ends: 712 [2022-11-02 20:45:57,610 INFO L226 Difference]: Without dead ends: 563 [2022-11-02 20:45:57,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:45:57,611 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 681 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:57,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1163 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:45:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-02 20:45:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 269. [2022-11-02 20:45:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3805970149253732) internal successors, (370), 268 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:57,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 370 transitions. [2022-11-02 20:45:57,625 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 370 transitions. Word has length 152 [2022-11-02 20:45:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:57,625 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 370 transitions. [2022-11-02 20:45:57,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 370 transitions. [2022-11-02 20:45:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:45:57,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:57,627 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] [2022-11-02 20:45:57,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:57,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:57,855 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1313942229, now seen corresponding path program 1 times [2022-11-02 20:45:57,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:57,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672536306] [2022-11-02 20:45:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:57,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:57,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:57,859 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:57,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:45:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:58,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:45:58,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:59,465 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 20:45:59,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:59,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:59,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672536306] [2022-11-02 20:45:59,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672536306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:59,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:59,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:59,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345303443] [2022-11-02 20:45:59,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:59,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:59,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:59,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:59,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:59,468 INFO L87 Difference]: Start difference. First operand 269 states and 370 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:00,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:00,003 INFO L93 Difference]: Finished difference Result 640 states and 915 transitions. [2022-11-02 20:46:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:00,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:46:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:00,007 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:46:00,007 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 20:46:00,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:46:00,009 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 729 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:00,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1289 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:46:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 20:46:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 273. [2022-11-02 20:46:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3786764705882353) internal successors, (375), 272 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 375 transitions. [2022-11-02 20:46:00,023 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 375 transitions. Word has length 152 [2022-11-02 20:46:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:00,024 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 375 transitions. [2022-11-02 20:46:00,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 375 transitions. [2022-11-02 20:46:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:00,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:00,026 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] [2022-11-02 20:46:00,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:00,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:00,247 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash 72261165, now seen corresponding path program 1 times [2022-11-02 20:46:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:00,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762707506] [2022-11-02 20:46:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:00,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:00,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:00,252 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:00,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:46:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:01,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:46:01,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:01,790 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 20:46:01,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:01,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:01,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762707506] [2022-11-02 20:46:01,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762707506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:01,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:01,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:46:01,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501054483] [2022-11-02 20:46:01,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:01,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:46:01,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:01,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:46:01,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:46:01,793 INFO L87 Difference]: Start difference. First operand 273 states and 375 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:02,342 INFO L93 Difference]: Finished difference Result 632 states and 902 transitions. [2022-11-02 20:46:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:02,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:46:02,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:02,345 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:46:02,345 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:46:02,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:46:02,346 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 704 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:02,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1251 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:46:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:46:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 275. [2022-11-02 20:46:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.3759124087591241) internal successors, (377), 274 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 377 transitions. [2022-11-02 20:46:02,358 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 377 transitions. Word has length 152 [2022-11-02 20:46:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:02,359 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 377 transitions. [2022-11-02 20:46:02,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 377 transitions. [2022-11-02 20:46:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:02,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:02,360 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] [2022-11-02 20:46:02,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:02,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:02,575 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1995489199, now seen corresponding path program 1 times [2022-11-02 20:46:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:02,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138593980] [2022-11-02 20:46:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:02,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:02,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:02,578 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:02,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:46:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:03,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:46:03,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:04,116 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 20:46:04,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:04,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:04,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138593980] [2022-11-02 20:46:04,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138593980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:04,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:04,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:46:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064010074] [2022-11-02 20:46:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:04,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:46:04,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:46:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:04,119 INFO L87 Difference]: Start difference. First operand 275 states and 377 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:04,549 INFO L93 Difference]: Finished difference Result 624 states and 889 transitions. [2022-11-02 20:46:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:46:04,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:46:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:04,552 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:46:04,552 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:46:04,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:46:04,553 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 500 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:04,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 997 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:46:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:46:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 277. [2022-11-02 20:46:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.3731884057971016) internal successors, (379), 276 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 379 transitions. [2022-11-02 20:46:04,567 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 379 transitions. Word has length 152 [2022-11-02 20:46:04,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:04,568 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 379 transitions. [2022-11-02 20:46:04,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:04,568 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 379 transitions. [2022-11-02 20:46:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:04,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:04,570 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] [2022-11-02 20:46:04,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:04,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:04,785 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:04,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:04,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2136037809, now seen corresponding path program 1 times [2022-11-02 20:46:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:04,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118252935] [2022-11-02 20:46:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:04,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:04,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:04,788 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:04,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:46:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:05,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:46:05,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:06,269 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 20:46:06,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:06,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:06,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118252935] [2022-11-02 20:46:06,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118252935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:06,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:06,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:46:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067361188] [2022-11-02 20:46:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:06,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:46:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:46:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:46:06,272 INFO L87 Difference]: Start difference. First operand 277 states and 379 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:06,569 INFO L93 Difference]: Finished difference Result 587 states and 836 transitions. [2022-11-02 20:46:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:46:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-11-02 20:46:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:06,571 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:46:06,571 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 20:46:06,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:06,572 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 270 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:06,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 772 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:46:06,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 20:46:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 279. [2022-11-02 20:46:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.370503597122302) internal successors, (381), 278 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 381 transitions. [2022-11-02 20:46:06,585 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 381 transitions. Word has length 152 [2022-11-02 20:46:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:06,586 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 381 transitions. [2022-11-02 20:46:06,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 381 transitions. [2022-11-02 20:46:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:06,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:06,588 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] [2022-11-02 20:46:06,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:06,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:06,807 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash 330599475, now seen corresponding path program 1 times [2022-11-02 20:46:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:06,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439363777] [2022-11-02 20:46:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:06,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:06,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:06,810 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:06,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:46:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:46:07,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:08,405 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 20:46:08,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:08,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:08,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439363777] [2022-11-02 20:46:08,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439363777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:08,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:08,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:46:08,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728957589] [2022-11-02 20:46:08,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:08,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:46:08,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:46:08,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:08,409 INFO L87 Difference]: Start difference. First operand 279 states and 381 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:08,792 INFO L93 Difference]: Finished difference Result 724 states and 1037 transitions. [2022-11-02 20:46:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:46:08,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:46:08,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:08,795 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:46:08,795 INFO L226 Difference]: Without dead ends: 575 [2022-11-02 20:46:08,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:46:08,798 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 661 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:08,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1156 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:46:08,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-02 20:46:08,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 281. [2022-11-02 20:46:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.3678571428571429) internal successors, (383), 280 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 383 transitions. [2022-11-02 20:46:08,816 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 383 transitions. Word has length 152 [2022-11-02 20:46:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:08,817 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 383 transitions. [2022-11-02 20:46:08,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 383 transitions. [2022-11-02 20:46:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:08,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:08,818 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] [2022-11-02 20:46:08,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:09,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:09,041 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash 753301301, now seen corresponding path program 1 times [2022-11-02 20:46:09,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:09,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580932954] [2022-11-02 20:46:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:09,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:09,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:09,044 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:09,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:46:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:10,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:46:10,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:10,557 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 20:46:10,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:10,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:10,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580932954] [2022-11-02 20:46:10,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580932954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:10,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:10,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:46:10,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108333746] [2022-11-02 20:46:10,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:10,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:46:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:46:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:46:10,559 INFO L87 Difference]: Start difference. First operand 281 states and 383 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:11,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:11,108 INFO L93 Difference]: Finished difference Result 632 states and 898 transitions. [2022-11-02 20:46:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:11,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-02 20:46:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:11,111 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:46:11,111 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 20:46:11,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:46:11,112 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 659 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:11,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1213 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:46:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 20:46:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 287. [2022-11-02 20:46:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.367132867132867) internal successors, (391), 286 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 391 transitions. [2022-11-02 20:46:11,122 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 391 transitions. Word has length 152 [2022-11-02 20:46:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:11,122 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 391 transitions. [2022-11-02 20:46:11,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 391 transitions. [2022-11-02 20:46:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:11,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:11,124 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] [2022-11-02 20:46:11,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:11,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:11,339 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:11,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -526562377, now seen corresponding path program 1 times [2022-11-02 20:46:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:11,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650581732] [2022-11-02 20:46:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:11,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:11,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:11,342 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:11,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:46:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:12,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:46:12,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:12,901 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 20:46:12,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:12,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:12,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650581732] [2022-11-02 20:46:12,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650581732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:12,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:12,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:46:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623624595] [2022-11-02 20:46:12,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:12,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:46:12,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:12,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:46:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:12,903 INFO L87 Difference]: Start difference. First operand 287 states and 391 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:13,312 INFO L93 Difference]: Finished difference Result 624 states and 885 transitions. [2022-11-02 20:46:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:46:13,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-02 20:46:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:13,315 INFO L225 Difference]: With dead ends: 624 [2022-11-02 20:46:13,315 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:46:13,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 20:46:13,317 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 460 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:13,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 977 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:46:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:46:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 289. [2022-11-02 20:46:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3645833333333333) internal successors, (393), 288 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 393 transitions. [2022-11-02 20:46:13,331 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 393 transitions. Word has length 152 [2022-11-02 20:46:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:13,331 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 393 transitions. [2022-11-02 20:46:13,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 393 transitions. [2022-11-02 20:46:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:13,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:13,333 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] [2022-11-02 20:46:13,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:13,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:13,547 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:13,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1113368391, now seen corresponding path program 1 times [2022-11-02 20:46:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:13,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324022] [2022-11-02 20:46:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:13,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:13,552 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:13,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:46:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:14,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:46:14,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:16,112 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 20:46:16,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:16,938 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 20:46:16,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:16,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324022] [2022-11-02 20:46:16,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:16,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:46:16,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:46:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778739855] [2022-11-02 20:46:16,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:16,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:46:16,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:46:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:46:16,942 INFO L87 Difference]: Start difference. First operand 289 states and 393 transitions. Second operand has 16 states, 16 states have (on average 18.375) internal successors, (294), 16 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:17,326 INFO L93 Difference]: Finished difference Result 598 states and 818 transitions. [2022-11-02 20:46:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:17,328 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.375) internal successors, (294), 16 states have internal predecessors, (294), 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 152 [2022-11-02 20:46:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:17,330 INFO L225 Difference]: With dead ends: 598 [2022-11-02 20:46:17,330 INFO L226 Difference]: Without dead ends: 449 [2022-11-02 20:46:17,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:46:17,331 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 498 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:17,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1785 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-02 20:46:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-02 20:46:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 416. [2022-11-02 20:46:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.3277108433734939) internal successors, (551), 415 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 551 transitions. [2022-11-02 20:46:17,362 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 551 transitions. Word has length 152 [2022-11-02 20:46:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:17,363 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 551 transitions. [2022-11-02 20:46:17,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.375) internal successors, (294), 16 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 551 transitions. [2022-11-02 20:46:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:17,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:17,364 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] [2022-11-02 20:46:17,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:17,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:17,567 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1506395401, now seen corresponding path program 1 times [2022-11-02 20:46:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428660653] [2022-11-02 20:46:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:17,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:17,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:17,571 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:17,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:46:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:18,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:46:18,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:20,053 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 20:46:20,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:20,862 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 20:46:20,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428660653] [2022-11-02 20:46:20,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428660653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:20,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:46:20,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:46:20,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36976234] [2022-11-02 20:46:20,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:20,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:46:20,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:46:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:46:20,868 INFO L87 Difference]: Start difference. First operand 416 states and 551 transitions. Second operand has 16 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:21,279 INFO L93 Difference]: Finished difference Result 840 states and 1117 transitions. [2022-11-02 20:46:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:21,281 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 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 152 [2022-11-02 20:46:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:21,283 INFO L225 Difference]: With dead ends: 840 [2022-11-02 20:46:21,283 INFO L226 Difference]: Without dead ends: 691 [2022-11-02 20:46:21,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:46:21,284 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 475 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:21,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1818 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2022-11-02 20:46:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-02 20:46:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 666. [2022-11-02 20:46:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.2932330827067668) internal successors, (860), 665 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 860 transitions. [2022-11-02 20:46:21,322 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 860 transitions. Word has length 152 [2022-11-02 20:46:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:21,322 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 860 transitions. [2022-11-02 20:46:21,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 860 transitions. [2022-11-02 20:46:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:21,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:21,325 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] [2022-11-02 20:46:21,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:21,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:21,552 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:21,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1979225269, now seen corresponding path program 1 times [2022-11-02 20:46:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:21,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226107148] [2022-11-02 20:46:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:21,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:21,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:21,557 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:21,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:46:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:22,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:46:22,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:23,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:24,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:24,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226107148] [2022-11-02 20:46:24,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226107148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:24,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:46:24,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:46:24,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115911123] [2022-11-02 20:46:24,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:24,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:46:24,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:46:24,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:46:24,668 INFO L87 Difference]: Start difference. First operand 666 states and 860 transitions. Second operand has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:24,923 INFO L93 Difference]: Finished difference Result 1353 states and 1751 transitions. [2022-11-02 20:46:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:46:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 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 152 [2022-11-02 20:46:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:24,930 INFO L225 Difference]: With dead ends: 1353 [2022-11-02 20:46:24,930 INFO L226 Difference]: Without dead ends: 1204 [2022-11-02 20:46:24,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:46:24,931 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 663 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:24,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1606 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2022-11-02 20:46:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-11-02 20:46:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1154. [2022-11-02 20:46:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.2662619254119687) internal successors, (1460), 1153 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1460 transitions. [2022-11-02 20:46:25,004 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1460 transitions. Word has length 152 [2022-11-02 20:46:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:25,004 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1460 transitions. [2022-11-02 20:46:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1460 transitions. [2022-11-02 20:46:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:25,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:25,008 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] [2022-11-02 20:46:25,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:25,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:25,230 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:25,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2036483571, now seen corresponding path program 1 times [2022-11-02 20:46:25,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:25,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701800735] [2022-11-02 20:46:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:25,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:25,234 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:25,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:46:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:26,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:46:26,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:27,414 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 20:46:27,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:28,231 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 20:46:28,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:28,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701800735] [2022-11-02 20:46:28,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701800735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:28,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:46:28,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:46:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920427113] [2022-11-02 20:46:28,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:46:28,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:46:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:46:28,237 INFO L87 Difference]: Start difference. First operand 1154 states and 1460 transitions. Second operand has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:28,513 INFO L93 Difference]: Finished difference Result 2274 states and 2871 transitions. [2022-11-02 20:46:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:28,514 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 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 152 [2022-11-02 20:46:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:28,520 INFO L225 Difference]: With dead ends: 2274 [2022-11-02 20:46:28,521 INFO L226 Difference]: Without dead ends: 2125 [2022-11-02 20:46:28,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:46:28,523 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 477 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:28,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1612 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-11-02 20:46:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-11-02 20:46:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2102. [2022-11-02 20:46:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2101 states have (on average 1.2460732984293195) internal successors, (2618), 2101 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2618 transitions. [2022-11-02 20:46:28,659 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2618 transitions. Word has length 152 [2022-11-02 20:46:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:28,660 INFO L495 AbstractCegarLoop]: Abstraction has 2102 states and 2618 transitions. [2022-11-02 20:46:28,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2618 transitions. [2022-11-02 20:46:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:28,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:28,665 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] [2022-11-02 20:46:28,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:28,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:28,878 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1329886965, now seen corresponding path program 1 times [2022-11-02 20:46:28,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:28,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258620251] [2022-11-02 20:46:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:28,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:28,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:28,882 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:28,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:46:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:29,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:46:29,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:31,660 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 20:46:31,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:42,654 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 20:46:42,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:42,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258620251] [2022-11-02 20:46:42,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258620251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:42,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:46:42,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:46:42,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534375240] [2022-11-02 20:46:42,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:42,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:46:42,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:42,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:46:42,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=187, Unknown=4, NotChecked=0, Total=240 [2022-11-02 20:46:42,658 INFO L87 Difference]: Start difference. First operand 2102 states and 2618 transitions. Second operand has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:42,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:42,846 INFO L93 Difference]: Finished difference Result 3061 states and 3751 transitions. [2022-11-02 20:46:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:42,847 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 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 152 [2022-11-02 20:46:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:42,855 INFO L225 Difference]: With dead ends: 3061 [2022-11-02 20:46:42,855 INFO L226 Difference]: Without dead ends: 3059 [2022-11-02 20:46:42,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=49, Invalid=187, Unknown=4, NotChecked=0, Total=240 [2022-11-02 20:46:42,857 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 573 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:42,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 2924 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 78 Unchecked, 0.0s Time] [2022-11-02 20:46:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2022-11-02 20:46:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2889. [2022-11-02 20:46:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2888 states have (on average 1.2205678670360112) internal successors, (3525), 2888 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 3525 transitions. [2022-11-02 20:46:43,097 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 3525 transitions. Word has length 152 [2022-11-02 20:46:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:43,098 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 3525 transitions. [2022-11-02 20:46:43,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 3525 transitions. [2022-11-02 20:46:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:43,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:43,104 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] [2022-11-02 20:46:43,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:43,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:43,326 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1003505673, now seen corresponding path program 1 times [2022-11-02 20:46:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:43,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467757408] [2022-11-02 20:46:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:43,329 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:43,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:46:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:44,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:46:44,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:46,045 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 20:46:46,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:54,701 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 20:46:54,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:46:54,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467757408] [2022-11-02 20:46:54,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467757408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:54,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:46:54,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:46:54,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28349845] [2022-11-02 20:46:54,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:54,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:46:54,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:46:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:46:54,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=249, Unknown=3, NotChecked=0, Total=306 [2022-11-02 20:46:54,704 INFO L87 Difference]: Start difference. First operand 2889 states and 3525 transitions. Second operand has 18 states, 18 states have (on average 16.77777777777778) internal successors, (302), 18 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:54,994 INFO L93 Difference]: Finished difference Result 4667 states and 5613 transitions. [2022-11-02 20:46:54,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:46:54,995 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.77777777777778) internal successors, (302), 18 states have internal predecessors, (302), 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 152 [2022-11-02 20:46:54,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:55,007 INFO L225 Difference]: With dead ends: 4667 [2022-11-02 20:46:55,007 INFO L226 Difference]: Without dead ends: 4665 [2022-11-02 20:46:55,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=54, Invalid=249, Unknown=3, NotChecked=0, Total=306 [2022-11-02 20:46:55,008 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 443 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:55,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 2831 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 78 Unchecked, 0.1s Time] [2022-11-02 20:46:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4665 states. [2022-11-02 20:46:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4665 to 2919. [2022-11-02 20:46:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2918 states have (on average 1.223440712816998) internal successors, (3570), 2918 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 3570 transitions. [2022-11-02 20:46:55,183 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 3570 transitions. Word has length 152 [2022-11-02 20:46:55,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:55,184 INFO L495 AbstractCegarLoop]: Abstraction has 2919 states and 3570 transitions. [2022-11-02 20:46:55,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.77777777777778) internal successors, (302), 18 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:55,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 3570 transitions. [2022-11-02 20:46:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:46:55,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:55,189 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] [2022-11-02 20:46:55,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:55,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:46:55,402 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1420902279, now seen corresponding path program 1 times [2022-11-02 20:46:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:46:55,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752213350] [2022-11-02 20:46:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:55,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:46:55,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:46:55,407 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:46:55,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:46:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:56,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:46:56,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:58,177 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 20:46:58,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:03,144 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 20:47:03,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:03,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752213350] [2022-11-02 20:47:03,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752213350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:03,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:47:03,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:47:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707619927] [2022-11-02 20:47:03,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:03,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:47:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=251, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:47:03,147 INFO L87 Difference]: Start difference. First operand 2919 states and 3570 transitions. Second operand has 18 states, 18 states have (on average 16.77777777777778) internal successors, (302), 18 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:03,399 INFO L93 Difference]: Finished difference Result 5671 states and 6895 transitions. [2022-11-02 20:47:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:47:03,399 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.77777777777778) internal successors, (302), 18 states have internal predecessors, (302), 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 152 [2022-11-02 20:47:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:03,410 INFO L225 Difference]: With dead ends: 5671 [2022-11-02 20:47:03,410 INFO L226 Difference]: Without dead ends: 5669 [2022-11-02 20:47:03,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=54, Invalid=251, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:47:03,412 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 510 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:03,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 2972 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 44 Unchecked, 0.0s Time] [2022-11-02 20:47:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-11-02 20:47:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 3865. [2022-11-02 20:47:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3864 states have (on average 1.2368012422360248) internal successors, (4779), 3864 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 4779 transitions. [2022-11-02 20:47:03,644 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 4779 transitions. Word has length 152 [2022-11-02 20:47:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:03,647 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 4779 transitions. [2022-11-02 20:47:03,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.77777777777778) internal successors, (302), 18 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 4779 transitions. [2022-11-02 20:47:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:47:03,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:03,654 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] [2022-11-02 20:47:03,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:03,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:03,870 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1855407877, now seen corresponding path program 1 times [2022-11-02 20:47:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730677770] [2022-11-02 20:47:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:03,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:03,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:03,873 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:03,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27524d33-4bb5-431d-bb86-b36890314109/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process