./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cff16a021943ea8a3cbc396d88e23120375df06b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cff16a021943ea8a3cbc396d88e23120375df06b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:15:48,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:15:48,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:15:48,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:15:48,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:15:48,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:15:48,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:15:48,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:15:48,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:15:48,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:15:48,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:15:48,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:15:48,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:15:48,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:15:48,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:15:48,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:15:48,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:15:48,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:15:48,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:15:48,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:15:48,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:15:48,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:15:48,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:15:48,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:15:48,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:15:48,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:15:48,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:15:48,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:15:48,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:15:48,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:15:48,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:15:48,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:15:48,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:15:48,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:15:48,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:15:48,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:15:48,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:15:48,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:15:48,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:15:48,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:15:48,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:15:48,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:15:48,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:15:48,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:15:48,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:15:48,992 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:15:48,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:15:48,993 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:15:48,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:15:48,993 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:15:48,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:15:48,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:15:48,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:15:48,995 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:15:48,995 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:15:48,996 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:15:48,996 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:15:48,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:15:48,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:15:48,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:15:48,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:15:48,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:15:48,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:15:48,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:15:48,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:15:48,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:15:48,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:15:48,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:15:48,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:15:48,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:15:49,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:15:49,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:15:49,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:15:49,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:15:49,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:15:49,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:15:49,002 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:15:49,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:15:49,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:15:49,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:15:49,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:15:49,003 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cff16a021943ea8a3cbc396d88e23120375df06b [2021-10-13 07:15:49,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:15:49,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:15:49,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:15:49,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:15:49,277 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:15:49,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-13 07:15:49,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/76c59e7fc/1215fa279c28481aa9c51538c95c56fa/FLAG64bea21c3 [2021-10-13 07:15:49,945 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:15:49,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-13 07:15:49,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/76c59e7fc/1215fa279c28481aa9c51538c95c56fa/FLAG64bea21c3 [2021-10-13 07:15:50,235 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/76c59e7fc/1215fa279c28481aa9c51538c95c56fa [2021-10-13 07:15:50,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:15:50,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:15:50,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:15:50,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:15:50,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:15:50,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7587965d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50, skipping insertion in model container [2021-10-13 07:15:50,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:15:50,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:15:50,602 WARN L228 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_e2aaf030-a019-40a7-89b9-04d2d3711e28/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-13 07:15:50,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:15:50,614 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:15:50,686 WARN L228 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_e2aaf030-a019-40a7-89b9-04d2d3711e28/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-13 07:15:50,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:15:50,726 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:15:50,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50 WrapperNode [2021-10-13 07:15:50,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:15:50,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:15:50,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:15:50,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:15:50,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:15:50,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:15:50,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:15:50,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:15:50,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:15:50,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:15:50,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:15:50,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:15:50,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (1/1) ... [2021-10-13 07:15:50,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:15:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:15:50,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:15:50,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:15:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:15:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:15:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:15:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:15:52,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:15:52,661 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-13 07:15:52,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:52 BoogieIcfgContainer [2021-10-13 07:15:52,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:15:52,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:15:52,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:15:52,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:15:52,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:15:50" (1/3) ... [2021-10-13 07:15:52,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f65bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:52, skipping insertion in model container [2021-10-13 07:15:52,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:50" (2/3) ... [2021-10-13 07:15:52,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f65bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:52, skipping insertion in model container [2021-10-13 07:15:52,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:52" (3/3) ... [2021-10-13 07:15:52,678 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-13 07:15:52,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:15:52,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-13 07:15:52,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:15:52,759 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:15:52,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-13 07:15:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 213 states have (on average 1.727699530516432) internal successors, (368), 236 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:15:52,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:52,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:52,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash -662955049, now seen corresponding path program 1 times [2021-10-13 07:15:52,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:52,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223679014] [2021-10-13 07:15:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:52,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:53,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:53,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223679014] [2021-10-13 07:15:53,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223679014] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:53,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:53,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:53,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064078224] [2021-10-13 07:15:53,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:53,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:53,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:53,245 INFO L87 Difference]: Start difference. First operand has 237 states, 213 states have (on average 1.727699530516432) internal successors, (368), 236 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:53,340 INFO L93 Difference]: Finished difference Result 472 states and 737 transitions. [2021-10-13 07:15:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:53,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-10-13 07:15:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:53,355 INFO L225 Difference]: With dead ends: 472 [2021-10-13 07:15:53,355 INFO L226 Difference]: Without dead ends: 236 [2021-10-13 07:15:53,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-13 07:15:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2021-10-13 07:15:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.5958549222797926) internal successors, (308), 211 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 308 transitions. [2021-10-13 07:15:53,414 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 308 transitions. Word has length 11 [2021-10-13 07:15:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:53,415 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 308 transitions. [2021-10-13 07:15:53,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 308 transitions. [2021-10-13 07:15:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:15:53,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:53,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:53,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:15:53,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:53,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1705836732, now seen corresponding path program 1 times [2021-10-13 07:15:53,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:53,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097149633] [2021-10-13 07:15:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:53,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:53,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:53,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097149633] [2021-10-13 07:15:53,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097149633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:53,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:53,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:15:53,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375491574] [2021-10-13 07:15:53,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:15:53,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:53,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:15:53,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:53,527 INFO L87 Difference]: Start difference. First operand 212 states and 308 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:53,628 INFO L93 Difference]: Finished difference Result 649 states and 946 transitions. [2021-10-13 07:15:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:15:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 07:15:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:53,634 INFO L225 Difference]: With dead ends: 649 [2021-10-13 07:15:53,634 INFO L226 Difference]: Without dead ends: 438 [2021-10-13 07:15:53,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-13 07:15:53,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 234. [2021-10-13 07:15:53,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 215 states have (on average 1.5906976744186045) internal successors, (342), 233 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) [2021-10-13 07:15:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 342 transitions. [2021-10-13 07:15:53,663 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 342 transitions. Word has length 15 [2021-10-13 07:15:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:53,664 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 342 transitions. [2021-10-13 07:15:53,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 342 transitions. [2021-10-13 07:15:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:15:53,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:53,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:53,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:15:53,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:53,667 INFO L82 PathProgramCache]: Analyzing trace with hash -917668936, now seen corresponding path program 1 times [2021-10-13 07:15:53,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:53,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164649962] [2021-10-13 07:15:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:53,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:53,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:53,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164649962] [2021-10-13 07:15:53,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164649962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:53,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:53,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:15:53,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653622023] [2021-10-13 07:15:53,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:15:53,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:15:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:53,743 INFO L87 Difference]: Start difference. First operand 234 states and 342 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:53,830 INFO L93 Difference]: Finished difference Result 857 states and 1248 transitions. [2021-10-13 07:15:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:15:53,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:15:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:53,835 INFO L225 Difference]: With dead ends: 857 [2021-10-13 07:15:53,836 INFO L226 Difference]: Without dead ends: 646 [2021-10-13 07:15:53,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:15:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-13 07:15:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 235. [2021-10-13 07:15:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 216 states have (on average 1.587962962962963) internal successors, (343), 234 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 343 transitions. [2021-10-13 07:15:53,857 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 343 transitions. Word has length 16 [2021-10-13 07:15:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:53,858 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 343 transitions. [2021-10-13 07:15:53,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 343 transitions. [2021-10-13 07:15:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:15:53,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:53,859 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:53,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:15:53,860 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:53,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1241551651, now seen corresponding path program 1 times [2021-10-13 07:15:53,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:53,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776307885] [2021-10-13 07:15:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:53,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:53,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:53,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776307885] [2021-10-13 07:15:53,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776307885] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:53,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:53,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:15:53,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545344872] [2021-10-13 07:15:53,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:15:53,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:15:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:53,983 INFO L87 Difference]: Start difference. First operand 235 states and 343 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:54,038 INFO L93 Difference]: Finished difference Result 655 states and 952 transitions. [2021-10-13 07:15:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:15:54,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:15:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:54,042 INFO L225 Difference]: With dead ends: 655 [2021-10-13 07:15:54,043 INFO L226 Difference]: Without dead ends: 444 [2021-10-13 07:15:54,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-13 07:15:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 236. [2021-10-13 07:15:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 217 states have (on average 1.5852534562211982) internal successors, (344), 235 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 344 transitions. [2021-10-13 07:15:54,090 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 344 transitions. Word has length 18 [2021-10-13 07:15:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:54,091 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 344 transitions. [2021-10-13 07:15:54,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 344 transitions. [2021-10-13 07:15:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:15:54,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:54,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:54,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:15:54,094 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:54,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1402275292, now seen corresponding path program 1 times [2021-10-13 07:15:54,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:54,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791056462] [2021-10-13 07:15:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:54,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:54,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:54,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791056462] [2021-10-13 07:15:54,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791056462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:54,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:54,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:54,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601432812] [2021-10-13 07:15:54,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:54,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,201 INFO L87 Difference]: Start difference. First operand 236 states and 344 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:54,226 INFO L93 Difference]: Finished difference Result 474 states and 693 transitions. [2021-10-13 07:15:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:15:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:54,229 INFO L225 Difference]: With dead ends: 474 [2021-10-13 07:15:54,229 INFO L226 Difference]: Without dead ends: 263 [2021-10-13 07:15:54,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-13 07:15:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 231. [2021-10-13 07:15:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 213 states have (on average 1.5774647887323943) internal successors, (336), 230 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 336 transitions. [2021-10-13 07:15:54,241 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 336 transitions. Word has length 18 [2021-10-13 07:15:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:54,241 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 336 transitions. [2021-10-13 07:15:54,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 336 transitions. [2021-10-13 07:15:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:15:54,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:54,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:54,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:15:54,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:54,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1799561420, now seen corresponding path program 1 times [2021-10-13 07:15:54,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:54,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271842195] [2021-10-13 07:15:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:54,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:54,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:54,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271842195] [2021-10-13 07:15:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271842195] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:54,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:54,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:54,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347330164] [2021-10-13 07:15:54,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:54,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,322 INFO L87 Difference]: Start difference. First operand 231 states and 336 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:54,377 INFO L93 Difference]: Finished difference Result 473 states and 692 transitions. [2021-10-13 07:15:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:54,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-13 07:15:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:54,380 INFO L225 Difference]: With dead ends: 473 [2021-10-13 07:15:54,381 INFO L226 Difference]: Without dead ends: 267 [2021-10-13 07:15:54,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-13 07:15:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 211. [2021-10-13 07:15:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 197 states have (on average 1.5431472081218274) internal successors, (304), 210 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 304 transitions. [2021-10-13 07:15:54,392 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 304 transitions. Word has length 22 [2021-10-13 07:15:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:54,392 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 304 transitions. [2021-10-13 07:15:54,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 304 transitions. [2021-10-13 07:15:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 07:15:54,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:54,394 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:54,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:15:54,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:54,395 INFO L82 PathProgramCache]: Analyzing trace with hash -516529140, now seen corresponding path program 1 times [2021-10-13 07:15:54,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:54,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667545905] [2021-10-13 07:15:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:54,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:54,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:54,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667545905] [2021-10-13 07:15:54,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667545905] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:54,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:54,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:54,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106096926] [2021-10-13 07:15:54,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:54,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:54,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,456 INFO L87 Difference]: Start difference. First operand 211 states and 304 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:54,495 INFO L93 Difference]: Finished difference Result 441 states and 636 transitions. [2021-10-13 07:15:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-13 07:15:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:54,498 INFO L225 Difference]: With dead ends: 441 [2021-10-13 07:15:54,498 INFO L226 Difference]: Without dead ends: 255 [2021-10-13 07:15:54,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-13 07:15:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 199. [2021-10-13 07:15:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 187 states have (on average 1.5294117647058822) internal successors, (286), 198 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) [2021-10-13 07:15:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 286 transitions. [2021-10-13 07:15:54,509 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 286 transitions. Word has length 26 [2021-10-13 07:15:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:54,510 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 286 transitions. [2021-10-13 07:15:54,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 286 transitions. [2021-10-13 07:15:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:15:54,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:54,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:54,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:15:54,512 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:54,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:54,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1453115858, now seen corresponding path program 1 times [2021-10-13 07:15:54,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:54,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873039768] [2021-10-13 07:15:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:54,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:54,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:54,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873039768] [2021-10-13 07:15:54,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873039768] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:54,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:54,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:54,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351970004] [2021-10-13 07:15:54,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:54,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,616 INFO L87 Difference]: Start difference. First operand 199 states and 286 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:54,675 INFO L93 Difference]: Finished difference Result 437 states and 628 transitions. [2021-10-13 07:15:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-13 07:15:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:54,678 INFO L225 Difference]: With dead ends: 437 [2021-10-13 07:15:54,678 INFO L226 Difference]: Without dead ends: 263 [2021-10-13 07:15:54,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-13 07:15:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 179. [2021-10-13 07:15:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 171 states have (on average 1.4853801169590644) internal successors, (254), 178 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 254 transitions. [2021-10-13 07:15:54,690 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 254 transitions. Word has length 27 [2021-10-13 07:15:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:54,692 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 254 transitions. [2021-10-13 07:15:54,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 254 transitions. [2021-10-13 07:15:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:15:54,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:54,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:54,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:15:54,695 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1000034464, now seen corresponding path program 1 times [2021-10-13 07:15:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:54,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393200038] [2021-10-13 07:15:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:54,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:54,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:54,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393200038] [2021-10-13 07:15:54,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393200038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:54,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:54,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:15:54,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432895887] [2021-10-13 07:15:54,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:15:54,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:15:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:15:54,900 INFO L87 Difference]: Start difference. First operand 179 states and 254 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:55,082 INFO L93 Difference]: Finished difference Result 613 states and 857 transitions. [2021-10-13 07:15:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:15:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 07:15:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:55,086 INFO L225 Difference]: With dead ends: 613 [2021-10-13 07:15:55,087 INFO L226 Difference]: Without dead ends: 459 [2021-10-13 07:15:55,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:15:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-10-13 07:15:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 214. [2021-10-13 07:15:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 206 states have (on average 1.4757281553398058) internal successors, (304), 213 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 304 transitions. [2021-10-13 07:15:55,104 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 304 transitions. Word has length 32 [2021-10-13 07:15:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:55,105 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 304 transitions. [2021-10-13 07:15:55,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 304 transitions. [2021-10-13 07:15:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:15:55,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:55,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:55,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:15:55,107 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:55,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1800839453, now seen corresponding path program 1 times [2021-10-13 07:15:55,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:55,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52462882] [2021-10-13 07:15:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:55,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:55,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:55,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52462882] [2021-10-13 07:15:55,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52462882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:55,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:55,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:55,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381950961] [2021-10-13 07:15:55,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:55,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:55,174 INFO L87 Difference]: Start difference. First operand 214 states and 304 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:55,212 INFO L93 Difference]: Finished difference Result 388 states and 553 transitions. [2021-10-13 07:15:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:55,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-13 07:15:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:55,214 INFO L225 Difference]: With dead ends: 388 [2021-10-13 07:15:55,215 INFO L226 Difference]: Without dead ends: 234 [2021-10-13 07:15:55,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-13 07:15:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 210. [2021-10-13 07:15:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 203 states have (on average 1.4630541871921183) internal successors, (297), 209 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 297 transitions. [2021-10-13 07:15:55,229 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 297 transitions. Word has length 33 [2021-10-13 07:15:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:55,230 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 297 transitions. [2021-10-13 07:15:55,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 297 transitions. [2021-10-13 07:15:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:15:55,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:55,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:55,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:15:55,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:55,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:55,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1614547625, now seen corresponding path program 1 times [2021-10-13 07:15:55,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:55,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293757104] [2021-10-13 07:15:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:55,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:55,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:55,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293757104] [2021-10-13 07:15:55,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293757104] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:55,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:55,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:55,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969594993] [2021-10-13 07:15:55,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:55,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:55,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:55,293 INFO L87 Difference]: Start difference. First operand 210 states and 297 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:55,340 INFO L93 Difference]: Finished difference Result 446 states and 626 transitions. [2021-10-13 07:15:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:55,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-13 07:15:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:55,345 INFO L225 Difference]: With dead ends: 446 [2021-10-13 07:15:55,345 INFO L226 Difference]: Without dead ends: 279 [2021-10-13 07:15:55,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-10-13 07:15:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 194. [2021-10-13 07:15:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.433862433862434) internal successors, (271), 193 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) [2021-10-13 07:15:55,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 271 transitions. [2021-10-13 07:15:55,363 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 271 transitions. Word has length 33 [2021-10-13 07:15:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:55,364 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 271 transitions. [2021-10-13 07:15:55,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,364 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 271 transitions. [2021-10-13 07:15:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 07:15:55,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:55,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:55,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:15:55,368 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:55,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:55,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1188562306, now seen corresponding path program 1 times [2021-10-13 07:15:55,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:55,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374013865] [2021-10-13 07:15:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:55,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:55,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:55,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374013865] [2021-10-13 07:15:55,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374013865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:55,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:55,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:15:55,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865552687] [2021-10-13 07:15:55,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:15:55,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:55,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:15:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:15:55,544 INFO L87 Difference]: Start difference. First operand 194 states and 271 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:55,847 INFO L93 Difference]: Finished difference Result 872 states and 1204 transitions. [2021-10-13 07:15:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:15:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-10-13 07:15:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:55,853 INFO L225 Difference]: With dead ends: 872 [2021-10-13 07:15:55,853 INFO L226 Difference]: Without dead ends: 716 [2021-10-13 07:15:55,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:15:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-13 07:15:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 251. [2021-10-13 07:15:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 246 states have (on average 1.4146341463414633) internal successors, (348), 250 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 348 transitions. [2021-10-13 07:15:55,880 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 348 transitions. Word has length 36 [2021-10-13 07:15:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:55,880 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 348 transitions. [2021-10-13 07:15:55,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 348 transitions. [2021-10-13 07:15:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:15:55,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:55,882 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:55,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:15:55,883 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash 86771068, now seen corresponding path program 1 times [2021-10-13 07:15:55,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:55,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439803625] [2021-10-13 07:15:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:55,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:55,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:55,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439803625] [2021-10-13 07:15:55,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439803625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:55,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:55,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:15:55,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083633434] [2021-10-13 07:15:55,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:15:55,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:15:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:15:55,975 INFO L87 Difference]: Start difference. First operand 251 states and 348 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:56,063 INFO L93 Difference]: Finished difference Result 404 states and 567 transitions. [2021-10-13 07:15:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:15:56,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-13 07:15:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:56,067 INFO L225 Difference]: With dead ends: 404 [2021-10-13 07:15:56,067 INFO L226 Difference]: Without dead ends: 402 [2021-10-13 07:15:56,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-13 07:15:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 253. [2021-10-13 07:15:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 248 states have (on average 1.4112903225806452) internal successors, (350), 252 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 350 transitions. [2021-10-13 07:15:56,093 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 350 transitions. Word has length 37 [2021-10-13 07:15:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:56,094 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 350 transitions. [2021-10-13 07:15:56,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 350 transitions. [2021-10-13 07:15:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:15:56,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:56,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:56,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:15:56,096 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:56,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2027534155, now seen corresponding path program 1 times [2021-10-13 07:15:56,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:56,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081388219] [2021-10-13 07:15:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:56,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:56,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:56,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081388219] [2021-10-13 07:15:56,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081388219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:56,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:56,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 07:15:56,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941232238] [2021-10-13 07:15:56,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:15:56,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:15:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:15:56,383 INFO L87 Difference]: Start difference. First operand 253 states and 350 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:57,072 INFO L93 Difference]: Finished difference Result 988 states and 1361 transitions. [2021-10-13 07:15:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 07:15:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-13 07:15:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:57,078 INFO L225 Difference]: With dead ends: 988 [2021-10-13 07:15:57,078 INFO L226 Difference]: Without dead ends: 819 [2021-10-13 07:15:57,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 248.1ms TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-13 07:15:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-10-13 07:15:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 262. [2021-10-13 07:15:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.4007782101167314) internal successors, (360), 261 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 360 transitions. [2021-10-13 07:15:57,114 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 360 transitions. Word has length 37 [2021-10-13 07:15:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:57,115 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 360 transitions. [2021-10-13 07:15:57,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 360 transitions. [2021-10-13 07:15:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 07:15:57,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:57,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:57,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 07:15:57,116 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:57,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash 656969202, now seen corresponding path program 1 times [2021-10-13 07:15:57,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:57,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895136693] [2021-10-13 07:15:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:57,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:57,220 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:57,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895136693] [2021-10-13 07:15:57,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895136693] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:57,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:57,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:15:57,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99234358] [2021-10-13 07:15:57,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:15:57,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:15:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:15:57,222 INFO L87 Difference]: Start difference. First operand 262 states and 360 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:57,356 INFO L93 Difference]: Finished difference Result 540 states and 766 transitions. [2021-10-13 07:15:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:15:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 07:15:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:57,359 INFO L225 Difference]: With dead ends: 540 [2021-10-13 07:15:57,359 INFO L226 Difference]: Without dead ends: 371 [2021-10-13 07:15:57,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:15:57,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-13 07:15:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 258. [2021-10-13 07:15:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 254 states have (on average 1.389763779527559) internal successors, (353), 257 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 353 transitions. [2021-10-13 07:15:57,418 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 353 transitions. Word has length 38 [2021-10-13 07:15:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:57,418 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 353 transitions. [2021-10-13 07:15:57,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 353 transitions. [2021-10-13 07:15:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 07:15:57,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:57,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:57,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 07:15:57,420 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash -628271537, now seen corresponding path program 1 times [2021-10-13 07:15:57,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:57,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57763791] [2021-10-13 07:15:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:57,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:57,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:57,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57763791] [2021-10-13 07:15:57,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57763791] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:57,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:57,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:15:57,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57199332] [2021-10-13 07:15:57,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:15:57,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:15:57,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:15:57,485 INFO L87 Difference]: Start difference. First operand 258 states and 353 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:57,601 INFO L93 Difference]: Finished difference Result 736 states and 994 transitions. [2021-10-13 07:15:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:15:57,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 07:15:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:57,605 INFO L225 Difference]: With dead ends: 736 [2021-10-13 07:15:57,606 INFO L226 Difference]: Without dead ends: 552 [2021-10-13 07:15:57,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-10-13 07:15:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 369. [2021-10-13 07:15:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 365 states have (on average 1.367123287671233) internal successors, (499), 368 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 499 transitions. [2021-10-13 07:15:57,654 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 499 transitions. Word has length 38 [2021-10-13 07:15:57,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:57,654 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 499 transitions. [2021-10-13 07:15:57,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 499 transitions. [2021-10-13 07:15:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 07:15:57,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:57,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:57,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 07:15:57,656 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:57,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1819312364, now seen corresponding path program 1 times [2021-10-13 07:15:57,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:57,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659359453] [2021-10-13 07:15:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:57,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:57,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:57,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659359453] [2021-10-13 07:15:57,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659359453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:57,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:57,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:57,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886274222] [2021-10-13 07:15:57,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:15:57,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:15:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:15:57,701 INFO L87 Difference]: Start difference. First operand 369 states and 499 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:57,799 INFO L93 Difference]: Finished difference Result 819 states and 1098 transitions. [2021-10-13 07:15:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:15:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-13 07:15:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:57,803 INFO L225 Difference]: With dead ends: 819 [2021-10-13 07:15:57,803 INFO L226 Difference]: Without dead ends: 482 [2021-10-13 07:15:57,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-13 07:15:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 323. [2021-10-13 07:15:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 1.35423197492163) internal successors, (432), 322 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 432 transitions. [2021-10-13 07:15:57,850 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 432 transitions. Word has length 40 [2021-10-13 07:15:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:57,850 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 432 transitions. [2021-10-13 07:15:57,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 432 transitions. [2021-10-13 07:15:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 07:15:57,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:57,852 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:57,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 07:15:57,852 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:57,853 INFO L82 PathProgramCache]: Analyzing trace with hash -647008060, now seen corresponding path program 1 times [2021-10-13 07:15:57,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:57,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651887542] [2021-10-13 07:15:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:57,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:57,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:57,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651887542] [2021-10-13 07:15:57,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651887542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:57,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:57,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:15:57,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327970073] [2021-10-13 07:15:57,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:15:57,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:57,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:15:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:15:57,979 INFO L87 Difference]: Start difference. First operand 323 states and 432 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:58,427 INFO L93 Difference]: Finished difference Result 1606 states and 2143 transitions. [2021-10-13 07:15:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:15:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-13 07:15:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:58,435 INFO L225 Difference]: With dead ends: 1606 [2021-10-13 07:15:58,435 INFO L226 Difference]: Without dead ends: 1351 [2021-10-13 07:15:58,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 73.1ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:15:58,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-10-13 07:15:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 403. [2021-10-13 07:15:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 399 states have (on average 1.3333333333333333) internal successors, (532), 402 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 532 transitions. [2021-10-13 07:15:58,505 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 532 transitions. Word has length 40 [2021-10-13 07:15:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:58,505 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 532 transitions. [2021-10-13 07:15:58,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 532 transitions. [2021-10-13 07:15:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 07:15:58,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:58,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:58,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 07:15:58,508 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash -95265734, now seen corresponding path program 1 times [2021-10-13 07:15:58,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:58,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871099528] [2021-10-13 07:15:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:58,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:58,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:58,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871099528] [2021-10-13 07:15:58,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871099528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:58,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:58,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:15:58,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692377557] [2021-10-13 07:15:58,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:15:58,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:15:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:15:58,568 INFO L87 Difference]: Start difference. First operand 403 states and 532 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:58,751 INFO L93 Difference]: Finished difference Result 1114 states and 1472 transitions. [2021-10-13 07:15:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:15:58,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-10-13 07:15:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:58,757 INFO L225 Difference]: With dead ends: 1114 [2021-10-13 07:15:58,757 INFO L226 Difference]: Without dead ends: 823 [2021-10-13 07:15:58,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-10-13 07:15:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 551. [2021-10-13 07:15:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 547 states have (on average 1.3180987202925045) internal successors, (721), 550 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 721 transitions. [2021-10-13 07:15:58,842 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 721 transitions. Word has length 42 [2021-10-13 07:15:58,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:58,842 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 721 transitions. [2021-10-13 07:15:58,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 721 transitions. [2021-10-13 07:15:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 07:15:58,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:58,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:58,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 07:15:58,844 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1692645151, now seen corresponding path program 1 times [2021-10-13 07:15:58,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:58,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991271295] [2021-10-13 07:15:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:58,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:58,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:58,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991271295] [2021-10-13 07:15:58,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991271295] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:58,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:58,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:15:58,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637472144] [2021-10-13 07:15:58,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:15:58,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:15:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:15:58,951 INFO L87 Difference]: Start difference. First operand 551 states and 721 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:59,232 INFO L93 Difference]: Finished difference Result 1222 states and 1645 transitions. [2021-10-13 07:15:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:15:59,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-10-13 07:15:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:59,238 INFO L225 Difference]: With dead ends: 1222 [2021-10-13 07:15:59,238 INFO L226 Difference]: Without dead ends: 814 [2021-10-13 07:15:59,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:15:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-10-13 07:15:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 547. [2021-10-13 07:15:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 544 states have (on average 1.3125) internal successors, (714), 546 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 714 transitions. [2021-10-13 07:15:59,341 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 714 transitions. Word has length 43 [2021-10-13 07:15:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:59,341 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 714 transitions. [2021-10-13 07:15:59,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 714 transitions. [2021-10-13 07:15:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 07:15:59,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:59,343 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:59,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 07:15:59,343 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:59,344 INFO L82 PathProgramCache]: Analyzing trace with hash -446182469, now seen corresponding path program 1 times [2021-10-13 07:15:59,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:59,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92034336] [2021-10-13 07:15:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:59,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:59,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:59,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92034336] [2021-10-13 07:15:59,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92034336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:59,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:59,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:59,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132034703] [2021-10-13 07:15:59,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:15:59,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:15:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:15:59,380 INFO L87 Difference]: Start difference. First operand 547 states and 714 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:59,520 INFO L93 Difference]: Finished difference Result 1279 states and 1668 transitions. [2021-10-13 07:15:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:15:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 07:15:59,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:59,525 INFO L225 Difference]: With dead ends: 1279 [2021-10-13 07:15:59,525 INFO L226 Difference]: Without dead ends: 769 [2021-10-13 07:15:59,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-10-13 07:15:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 506. [2021-10-13 07:15:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 503 states have (on average 1.3061630218687872) internal successors, (657), 505 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 657 transitions. [2021-10-13 07:15:59,605 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 657 transitions. Word has length 45 [2021-10-13 07:15:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:59,605 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 657 transitions. [2021-10-13 07:15:59,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 657 transitions. [2021-10-13 07:15:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:15:59,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:59,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:59,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 07:15:59,607 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:15:59,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:59,608 INFO L82 PathProgramCache]: Analyzing trace with hash 213671649, now seen corresponding path program 1 times [2021-10-13 07:15:59,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:59,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176571890] [2021-10-13 07:15:59,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:59,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:59,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:59,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176571890] [2021-10-13 07:15:59,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176571890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:59,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:59,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:15:59,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297912166] [2021-10-13 07:15:59,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:15:59,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:15:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:15:59,726 INFO L87 Difference]: Start difference. First operand 506 states and 657 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:00,032 INFO L93 Difference]: Finished difference Result 1533 states and 2044 transitions. [2021-10-13 07:16:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:16:00,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-10-13 07:16:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:00,041 INFO L225 Difference]: With dead ends: 1533 [2021-10-13 07:16:00,041 INFO L226 Difference]: Without dead ends: 1129 [2021-10-13 07:16:00,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:16:00,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-10-13 07:16:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 502. [2021-10-13 07:16:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 500 states have (on average 1.3) internal successors, (650), 501 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 650 transitions. [2021-10-13 07:16:00,128 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 650 transitions. Word has length 51 [2021-10-13 07:16:00,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:00,129 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 650 transitions. [2021-10-13 07:16:00,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 650 transitions. [2021-10-13 07:16:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 07:16:00,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:00,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:00,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-13 07:16:00,131 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:00,131 INFO L82 PathProgramCache]: Analyzing trace with hash 214884705, now seen corresponding path program 1 times [2021-10-13 07:16:00,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:16:00,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17389033] [2021-10-13 07:16:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:00,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:16:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:00,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:16:00,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17389033] [2021-10-13 07:16:00,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17389033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:00,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:00,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:16:00,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119019166] [2021-10-13 07:16:00,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:00,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:16:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:00,191 INFO L87 Difference]: Start difference. First operand 502 states and 650 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:00,311 INFO L93 Difference]: Finished difference Result 897 states and 1177 transitions. [2021-10-13 07:16:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:00,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-10-13 07:16:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:00,315 INFO L225 Difference]: With dead ends: 897 [2021-10-13 07:16:00,315 INFO L226 Difference]: Without dead ends: 497 [2021-10-13 07:16:00,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-10-13 07:16:00,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2021-10-13 07:16:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.2943548387096775) internal successors, (642), 496 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 642 transitions. [2021-10-13 07:16:00,393 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 642 transitions. Word has length 59 [2021-10-13 07:16:00,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:00,394 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 642 transitions. [2021-10-13 07:16:00,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:00,394 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 642 transitions. [2021-10-13 07:16:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 07:16:00,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:00,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:00,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 07:16:00,396 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 556221272, now seen corresponding path program 1 times [2021-10-13 07:16:00,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:16:00,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250103362] [2021-10-13 07:16:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:00,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:16:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:00,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:16:00,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250103362] [2021-10-13 07:16:00,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250103362] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:00,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:00,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:16:00,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477858003] [2021-10-13 07:16:00,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:16:00,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:16:00,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:16:00,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:16:00,580 INFO L87 Difference]: Start difference. First operand 497 states and 642 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:00,969 INFO L93 Difference]: Finished difference Result 1312 states and 1730 transitions. [2021-10-13 07:16:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 07:16:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-10-13 07:16:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:00,975 INFO L225 Difference]: With dead ends: 1312 [2021-10-13 07:16:00,975 INFO L226 Difference]: Without dead ends: 917 [2021-10-13 07:16:00,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:16:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-10-13 07:16:01,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 507. [2021-10-13 07:16:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.2865612648221343) internal successors, (651), 506 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 651 transitions. [2021-10-13 07:16:01,064 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 651 transitions. Word has length 63 [2021-10-13 07:16:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:01,065 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 651 transitions. [2021-10-13 07:16:01,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 651 transitions. [2021-10-13 07:16:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 07:16:01,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:01,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:01,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-13 07:16:01,071 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:01,071 INFO L82 PathProgramCache]: Analyzing trace with hash -388639555, now seen corresponding path program 1 times [2021-10-13 07:16:01,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:16:01,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262636347] [2021-10-13 07:16:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:01,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:16:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:01,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:16:01,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262636347] [2021-10-13 07:16:01,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262636347] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:01,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:01,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 07:16:01,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302857173] [2021-10-13 07:16:01,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 07:16:01,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:16:01,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 07:16:01,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:16:01,442 INFO L87 Difference]: Start difference. First operand 507 states and 651 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:02,584 INFO L93 Difference]: Finished difference Result 1542 states and 1965 transitions. [2021-10-13 07:16:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:16:02,589 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-10-13 07:16:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:02,596 INFO L225 Difference]: With dead ends: 1542 [2021-10-13 07:16:02,596 INFO L226 Difference]: Without dead ends: 1123 [2021-10-13 07:16:02,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 448.5ms TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:16:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-13 07:16:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 507. [2021-10-13 07:16:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.2806324110671936) internal successors, (648), 506 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 648 transitions. [2021-10-13 07:16:02,697 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 648 transitions. Word has length 67 [2021-10-13 07:16:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:02,697 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 648 transitions. [2021-10-13 07:16:02,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 648 transitions. [2021-10-13 07:16:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 07:16:02,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:02,699 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:02,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-13 07:16:02,700 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:02,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:02,700 INFO L82 PathProgramCache]: Analyzing trace with hash -270538526, now seen corresponding path program 1 times [2021-10-13 07:16:02,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:16:02,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482093659] [2021-10-13 07:16:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:02,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:16:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:02,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:16:02,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482093659] [2021-10-13 07:16:02,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482093659] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:02,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:02,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:16:02,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515716699] [2021-10-13 07:16:02,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:16:02,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:16:02,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:16:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:16:02,854 INFO L87 Difference]: Start difference. First operand 507 states and 648 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:03,453 INFO L93 Difference]: Finished difference Result 1687 states and 2176 transitions. [2021-10-13 07:16:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:16:03,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-10-13 07:16:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:03,462 INFO L225 Difference]: With dead ends: 1687 [2021-10-13 07:16:03,462 INFO L226 Difference]: Without dead ends: 1268 [2021-10-13 07:16:03,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:16:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-10-13 07:16:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 527. [2021-10-13 07:16:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.2642585551330798) internal successors, (665), 526 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 665 transitions. [2021-10-13 07:16:03,578 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 665 transitions. Word has length 71 [2021-10-13 07:16:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:03,578 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 665 transitions. [2021-10-13 07:16:03,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 665 transitions. [2021-10-13 07:16:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 07:16:03,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:03,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:03,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-13 07:16:03,581 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:03,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1697970758, now seen corresponding path program 1 times [2021-10-13 07:16:03,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:16:03,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672379281] [2021-10-13 07:16:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:03,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:16:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:05,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:16:05,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672379281] [2021-10-13 07:16:05,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672379281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:05,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:05,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-10-13 07:16:05,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622222104] [2021-10-13 07:16:05,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 07:16:05,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:16:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 07:16:05,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-10-13 07:16:05,002 INFO L87 Difference]: Start difference. First operand 527 states and 665 transitions. Second operand has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:08,194 INFO L93 Difference]: Finished difference Result 1708 states and 2179 transitions. [2021-10-13 07:16:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 07:16:08,194 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-10-13 07:16:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:08,200 INFO L225 Difference]: With dead ends: 1708 [2021-10-13 07:16:08,201 INFO L226 Difference]: Without dead ends: 1283 [2021-10-13 07:16:08,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 2407.4ms TimeCoverageRelationStatistics Valid=728, Invalid=3178, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 07:16:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-10-13 07:16:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 554. [2021-10-13 07:16:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.2567811934900543) internal successors, (695), 553 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 695 transitions. [2021-10-13 07:16:08,336 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 695 transitions. Word has length 74 [2021-10-13 07:16:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:08,336 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 695 transitions. [2021-10-13 07:16:08,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 695 transitions. [2021-10-13 07:16:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 07:16:08,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:08,338 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:16:08,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-13 07:16:08,339 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:08,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1704126403, now seen corresponding path program 1 times [2021-10-13 07:16:08,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:16:08,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499298583] [2021-10-13 07:16:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:08,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:16:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:08,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:16:08,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499298583] [2021-10-13 07:16:08,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499298583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:16:08,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282573836] [2021-10-13 07:16:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:08,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:16:08,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:16:08,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:16:08,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:16:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:08,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:16:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:09,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:09,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282573836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:16:09,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1601609657] [2021-10-13 07:16:09,354 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-10-13 07:16:09,354 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:16:09,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:16:09,364 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:16:09,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:16:11,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,722 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:16:11,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:16:11,727 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:16:11,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:16:11,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-10-13 07:16:11,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,871 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:11,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,890 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:11,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,909 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:11,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,925 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:11,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,940 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:11,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:11,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:11,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:11,956 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:11,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:16:11,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:16:11,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:16:12,066 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:16:12,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:16:12,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:16:12,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:16:12,073 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,088 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,103 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,116 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,128 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,140 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:16:12,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:16:12,151 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:16:12,187 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:16:12,198 INFO L180 QuantifierPusher]: treesize reduction 48, result has 84.7 percent of original size [2021-10-13 07:16:12,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-10-13 07:16:12,206 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:16:12,207 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 1 variables, input treesize:4051, output treesize:266 [2021-10-13 07:16:12,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:12,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 07:16:12,425 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_13| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:16:12,428 INFO L168 Benchmark]: Toolchain (without parser) took 22189.68 ms. Allocated memory was 134.2 MB in the beginning and 390.1 MB in the end (delta: 255.9 MB). Free memory was 97.9 MB in the beginning and 181.7 MB in the end (delta: -83.8 MB). Peak memory consumption was 173.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:16:12,428 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 134.2 MB. Free memory was 105.1 MB in the beginning and 105.1 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:16:12,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.06 ms. Allocated memory is still 134.2 MB. Free memory was 97.6 MB in the beginning and 102.7 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:16:12,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.29 ms. Allocated memory is still 134.2 MB. Free memory was 102.7 MB in the beginning and 97.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:16:12,429 INFO L168 Benchmark]: Boogie Preprocessor took 107.51 ms. Allocated memory is still 134.2 MB. Free memory was 97.7 MB in the beginning and 94.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:16:12,430 INFO L168 Benchmark]: RCFGBuilder took 1718.41 ms. Allocated memory is still 134.2 MB. Free memory was 94.3 MB in the beginning and 66.6 MB in the end (delta: 27.7 MB). Peak memory consumption was 63.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:16:12,431 INFO L168 Benchmark]: TraceAbstraction took 19756.98 ms. Allocated memory was 134.2 MB in the beginning and 390.1 MB in the end (delta: 255.9 MB). Free memory was 65.9 MB in the beginning and 181.7 MB in the end (delta: -115.7 MB). Peak memory consumption was 140.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:16:12,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 134.2 MB. Free memory was 105.1 MB in the beginning and 105.1 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 487.06 ms. Allocated memory is still 134.2 MB. Free memory was 97.6 MB in the beginning and 102.7 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.29 ms. Allocated memory is still 134.2 MB. Free memory was 102.7 MB in the beginning and 97.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.51 ms. Allocated memory is still 134.2 MB. Free memory was 97.7 MB in the beginning and 94.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1718.41 ms. Allocated memory is still 134.2 MB. Free memory was 94.3 MB in the beginning and 66.6 MB in the end (delta: 27.7 MB). Peak memory consumption was 63.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19756.98 ms. Allocated memory was 134.2 MB in the beginning and 390.1 MB in the end (delta: 255.9 MB). Free memory was 65.9 MB in the beginning and 181.7 MB in the end (delta: -115.7 MB). Peak memory consumption was 140.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_13| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_13|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:16:12,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:16:14,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:16:14,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:16:15,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:16:15,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:16:15,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:16:15,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:16:15,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:16:15,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:16:15,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:16:15,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:16:15,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:16:15,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:16:15,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:16:15,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:16:15,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:16:15,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:16:15,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:16:15,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:16:15,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:16:15,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:16:15,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:16:15,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:16:15,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:16:15,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:16:15,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:16:15,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:16:15,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:16:15,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:16:15,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:16:15,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:16:15,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:16:15,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:16:15,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:16:15,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:16:15,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:16:15,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:16:15,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:16:15,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:16:15,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:16:15,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:16:15,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:16:15,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:16:15,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:16:15,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:16:15,183 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:16:15,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:16:15,183 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:16:15,184 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:16:15,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:16:15,184 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:16:15,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:16:15,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:16:15,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:16:15,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:16:15,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:16:15,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:16:15,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:16:15,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:16:15,188 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:16:15,188 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:16:15,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:16:15,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:16:15,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:16:15,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:16:15,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:16:15,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:16:15,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:16:15,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:16:15,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:16:15,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:16:15,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:16:15,191 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:16:15,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:16:15,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:16:15,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:16:15,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:16:15,192 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_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cff16a021943ea8a3cbc396d88e23120375df06b [2021-10-13 07:16:15,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:16:15,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:16:15,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:16:15,592 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:16:15,593 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:16:15,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-13 07:16:15,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/13361e327/d1ac0f5c92504528b8a60d413d575135/FLAG034a4e7ae [2021-10-13 07:16:16,318 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:16:16,319 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-13 07:16:16,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/13361e327/d1ac0f5c92504528b8a60d413d575135/FLAG034a4e7ae [2021-10-13 07:16:16,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/data/13361e327/d1ac0f5c92504528b8a60d413d575135 [2021-10-13 07:16:16,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:16:16,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:16:16,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:16:16,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:16:16,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:16:16,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:16" (1/1) ... [2021-10-13 07:16:16,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457d9537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:16, skipping insertion in model container [2021-10-13 07:16:16,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:16" (1/1) ... [2021-10-13 07:16:16,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:16:16,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:16:16,964 WARN L228 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_e2aaf030-a019-40a7-89b9-04d2d3711e28/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-13 07:16:16,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:16:16,980 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:16:17,053 WARN L228 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_e2aaf030-a019-40a7-89b9-04d2d3711e28/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-10-13 07:16:17,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:16:17,072 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:16:17,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17 WrapperNode [2021-10-13 07:16:17,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:16:17,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:16:17,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:16:17,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:16:17,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:16:17,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:16:17,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:16:17,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:16:17,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:16:17,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:16:17,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:16:17,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:16:17,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (1/1) ... [2021-10-13 07:16:17,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:16:17,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:16:17,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:16:17,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:16:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:16:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:16:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:16:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:16:18,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:16:18,393 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-13 07:16:18,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:18 BoogieIcfgContainer [2021-10-13 07:16:18,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:16:18,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:16:18,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:16:18,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:16:18,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:16:16" (1/3) ... [2021-10-13 07:16:18,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419fb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:18, skipping insertion in model container [2021-10-13 07:16:18,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:17" (2/3) ... [2021-10-13 07:16:18,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419fb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:18, skipping insertion in model container [2021-10-13 07:16:18,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:18" (3/3) ... [2021-10-13 07:16:18,408 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-10-13 07:16:18,414 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:16:18,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-13 07:16:18,465 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:16:18,472 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:16:18,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-13 07:16:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 296 states, 272 states have (on average 1.7058823529411764) internal successors, (464), 295 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:16:18,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:18,508 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:18,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:18,514 INFO L82 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2021-10-13 07:16:18,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:18,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174910684] [2021-10-13 07:16:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:18,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:18,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:18,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:18,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:16:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:18,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:16:18,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:18,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:18,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:18,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174910684] [2021-10-13 07:16:18,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174910684] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:18,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:18,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:16:18,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992361214] [2021-10-13 07:16:18,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:16:18,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:16:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:16:18,998 INFO L87 Difference]: Start difference. First operand has 296 states, 272 states have (on average 1.7058823529411764) internal successors, (464), 295 states have internal predecessors, (464), 0 states have call successors, (0), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:19,073 INFO L93 Difference]: Finished difference Result 572 states and 896 transitions. [2021-10-13 07:16:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:16:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-13 07:16:19,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:19,088 INFO L225 Difference]: With dead ends: 572 [2021-10-13 07:16:19,088 INFO L226 Difference]: Without dead ends: 292 [2021-10-13 07:16:19,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:16:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-13 07:16:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-13 07:16:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 269 states have (on average 1.5910780669144982) internal successors, (428), 291 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 428 transitions. [2021-10-13 07:16:19,159 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 428 transitions. Word has length 33 [2021-10-13 07:16:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:19,160 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 428 transitions. [2021-10-13 07:16:19,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:19,161 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 428 transitions. [2021-10-13 07:16:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:16:19,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:19,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:19,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:19,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:19,377 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:19,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2021-10-13 07:16:19,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:19,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946782783] [2021-10-13 07:16:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:19,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:19,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:19,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:19,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:16:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:19,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:19,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:19,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:19,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:19,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946782783] [2021-10-13 07:16:19,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946782783] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:19,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:19,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:16:19,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363343464] [2021-10-13 07:16:19,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:16:19,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:16:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:16:19,700 INFO L87 Difference]: Start difference. First operand 292 states and 428 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:19,780 INFO L93 Difference]: Finished difference Result 570 states and 830 transitions. [2021-10-13 07:16:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:16:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-13 07:16:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:19,786 INFO L225 Difference]: With dead ends: 570 [2021-10-13 07:16:19,786 INFO L226 Difference]: Without dead ends: 292 [2021-10-13 07:16:19,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:16:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-13 07:16:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-13 07:16:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 269 states have (on average 1.546468401486989) internal successors, (416), 291 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 416 transitions. [2021-10-13 07:16:19,839 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 416 transitions. Word has length 33 [2021-10-13 07:16:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:19,843 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 416 transitions. [2021-10-13 07:16:19,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 416 transitions. [2021-10-13 07:16:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:16:19,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:19,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:19,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:20,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:20,063 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:20,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:20,068 INFO L82 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2021-10-13 07:16:20,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:20,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218676339] [2021-10-13 07:16:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:20,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:20,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:20,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:20,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:16:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:20,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:20,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:20,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:20,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:20,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218676339] [2021-10-13 07:16:20,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218676339] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:20,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:20,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:20,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460497203] [2021-10-13 07:16:20,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:20,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:20,503 INFO L87 Difference]: Start difference. First operand 292 states and 416 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:20,577 INFO L93 Difference]: Finished difference Result 646 states and 929 transitions. [2021-10-13 07:16:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:20,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-10-13 07:16:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:20,581 INFO L225 Difference]: With dead ends: 646 [2021-10-13 07:16:20,582 INFO L226 Difference]: Without dead ends: 371 [2021-10-13 07:16:20,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-13 07:16:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 268. [2021-10-13 07:16:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 267 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 380 transitions. [2021-10-13 07:16:20,600 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 380 transitions. Word has length 44 [2021-10-13 07:16:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:20,601 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 380 transitions. [2021-10-13 07:16:20,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 380 transitions. [2021-10-13 07:16:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 07:16:20,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:20,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:20,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:20,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:20,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1585020226, now seen corresponding path program 1 times [2021-10-13 07:16:20,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:20,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287250061] [2021-10-13 07:16:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:20,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:20,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:20,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:20,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:16:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:21,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:16:21,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:21,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:21,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:21,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287250061] [2021-10-13 07:16:21,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287250061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:21,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:21,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:16:21,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503595632] [2021-10-13 07:16:21,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:16:21,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:16:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:16:21,444 INFO L87 Difference]: Start difference. First operand 268 states and 380 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:21,890 INFO L93 Difference]: Finished difference Result 1063 states and 1527 transitions. [2021-10-13 07:16:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:16:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 53 [2021-10-13 07:16:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:21,897 INFO L225 Difference]: With dead ends: 1063 [2021-10-13 07:16:21,898 INFO L226 Difference]: Without dead ends: 812 [2021-10-13 07:16:21,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:16:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-13 07:16:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 326. [2021-10-13 07:16:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.50814332247557) internal successors, (463), 325 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 463 transitions. [2021-10-13 07:16:21,944 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 463 transitions. Word has length 53 [2021-10-13 07:16:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:21,944 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 463 transitions. [2021-10-13 07:16:21,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 463 transitions. [2021-10-13 07:16:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 07:16:21,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:21,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:21,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:22,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:22,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1352517378, now seen corresponding path program 1 times [2021-10-13 07:16:22,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:22,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353265635] [2021-10-13 07:16:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:22,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:22,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:22,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:16:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:22,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:16:22,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:22,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:22,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:22,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353265635] [2021-10-13 07:16:22,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353265635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:22,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:22,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:16:22,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568129301] [2021-10-13 07:16:22,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:16:22,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:16:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:16:22,774 INFO L87 Difference]: Start difference. First operand 326 states and 463 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:23,158 INFO L93 Difference]: Finished difference Result 1064 states and 1526 transitions. [2021-10-13 07:16:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:16:23,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 54 [2021-10-13 07:16:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:23,169 INFO L225 Difference]: With dead ends: 1064 [2021-10-13 07:16:23,169 INFO L226 Difference]: Without dead ends: 813 [2021-10-13 07:16:23,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:16:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-10-13 07:16:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 327. [2021-10-13 07:16:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 308 states have (on average 1.5032467532467533) internal successors, (463), 326 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 463 transitions. [2021-10-13 07:16:23,202 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 463 transitions. Word has length 54 [2021-10-13 07:16:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:23,203 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 463 transitions. [2021-10-13 07:16:23,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 463 transitions. [2021-10-13 07:16:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 07:16:23,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:23,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:23,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:23,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:23,416 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1496271540, now seen corresponding path program 1 times [2021-10-13 07:16:23,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:23,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759717637] [2021-10-13 07:16:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:23,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:23,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:23,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:16:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:23,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:16:23,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:23,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:23,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:23,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759717637] [2021-10-13 07:16:23,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759717637] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:23,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:23,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:23,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153961952] [2021-10-13 07:16:23,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:23,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:23,945 INFO L87 Difference]: Start difference. First operand 327 states and 463 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:24,005 INFO L93 Difference]: Finished difference Result 837 states and 1196 transitions. [2021-10-13 07:16:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:24,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-10-13 07:16:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:24,011 INFO L225 Difference]: With dead ends: 837 [2021-10-13 07:16:24,012 INFO L226 Difference]: Without dead ends: 586 [2021-10-13 07:16:24,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-13 07:16:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 393. [2021-10-13 07:16:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 374 states have (on average 1.4893048128342246) internal successors, (557), 392 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 557 transitions. [2021-10-13 07:16:24,049 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 557 transitions. Word has length 57 [2021-10-13 07:16:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:24,050 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 557 transitions. [2021-10-13 07:16:24,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 557 transitions. [2021-10-13 07:16:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:16:24,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:24,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:24,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:24,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:24,264 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:24,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1355006746, now seen corresponding path program 1 times [2021-10-13 07:16:24,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:24,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965977389] [2021-10-13 07:16:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:24,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:24,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:24,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:24,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:16:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:24,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:16:24,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:24,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:24,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:24,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965977389] [2021-10-13 07:16:24,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965977389] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:24,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:24,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:24,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331675276] [2021-10-13 07:16:24,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:24,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:24,870 INFO L87 Difference]: Start difference. First operand 393 states and 557 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:24,932 INFO L93 Difference]: Finished difference Result 937 states and 1337 transitions. [2021-10-13 07:16:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:24,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-10-13 07:16:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:24,937 INFO L225 Difference]: With dead ends: 937 [2021-10-13 07:16:24,937 INFO L226 Difference]: Without dead ends: 651 [2021-10-13 07:16:24,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-10-13 07:16:24,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 434. [2021-10-13 07:16:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 415 states have (on average 1.472289156626506) internal successors, (611), 433 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 611 transitions. [2021-10-13 07:16:24,971 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 611 transitions. Word has length 58 [2021-10-13 07:16:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:24,971 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 611 transitions. [2021-10-13 07:16:24,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 611 transitions. [2021-10-13 07:16:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:16:24,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:24,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:24,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:25,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:25,188 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:25,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:25,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2035065116, now seen corresponding path program 1 times [2021-10-13 07:16:25,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:25,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580864645] [2021-10-13 07:16:25,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:25,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:25,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:25,189 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:25,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:16:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:25,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:16:25,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:25,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:25,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:25,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580864645] [2021-10-13 07:16:25,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580864645] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:25,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:25,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:16:25,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353284336] [2021-10-13 07:16:25,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:16:25,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:16:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:16:25,784 INFO L87 Difference]: Start difference. First operand 434 states and 611 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:25,831 INFO L93 Difference]: Finished difference Result 747 states and 1066 transitions. [2021-10-13 07:16:25,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:16:25,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-10-13 07:16:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:25,836 INFO L225 Difference]: With dead ends: 747 [2021-10-13 07:16:25,836 INFO L226 Difference]: Without dead ends: 401 [2021-10-13 07:16:25,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:16:25,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-10-13 07:16:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-10-13 07:16:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 382 states have (on average 1.486910994764398) internal successors, (568), 400 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 568 transitions. [2021-10-13 07:16:25,883 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 568 transitions. Word has length 58 [2021-10-13 07:16:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:25,885 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 568 transitions. [2021-10-13 07:16:25,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 568 transitions. [2021-10-13 07:16:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:16:25,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:25,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:25,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:26,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:26,107 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:26,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:26,107 INFO L82 PathProgramCache]: Analyzing trace with hash 265188724, now seen corresponding path program 1 times [2021-10-13 07:16:26,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:26,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988219387] [2021-10-13 07:16:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:26,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:26,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:26,109 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:26,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:16:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:26,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:26,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:26,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:26,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:26,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988219387] [2021-10-13 07:16:26,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988219387] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:26,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:26,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:26,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558239935] [2021-10-13 07:16:26,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:26,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:26,691 INFO L87 Difference]: Start difference. First operand 401 states and 568 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:26,744 INFO L93 Difference]: Finished difference Result 848 states and 1219 transitions. [2021-10-13 07:16:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:26,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-10-13 07:16:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:26,748 INFO L225 Difference]: With dead ends: 848 [2021-10-13 07:16:26,748 INFO L226 Difference]: Without dead ends: 556 [2021-10-13 07:16:26,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-13 07:16:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 396. [2021-10-13 07:16:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 378 states have (on average 1.4814814814814814) internal successors, (560), 395 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 560 transitions. [2021-10-13 07:16:26,800 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 560 transitions. Word has length 58 [2021-10-13 07:16:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:26,800 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 560 transitions. [2021-10-13 07:16:26,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 560 transitions. [2021-10-13 07:16:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 07:16:26,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:26,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:26,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:27,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:27,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:27,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1325088052, now seen corresponding path program 1 times [2021-10-13 07:16:27,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:27,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903837237] [2021-10-13 07:16:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:27,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:27,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:27,016 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:27,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:16:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:27,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:27,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:27,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:27,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903837237] [2021-10-13 07:16:27,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903837237] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:27,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:27,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:27,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603026219] [2021-10-13 07:16:27,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:27,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:27,620 INFO L87 Difference]: Start difference. First operand 396 states and 560 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:27,695 INFO L93 Difference]: Finished difference Result 830 states and 1199 transitions. [2021-10-13 07:16:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-10-13 07:16:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:27,699 INFO L225 Difference]: With dead ends: 830 [2021-10-13 07:16:27,705 INFO L226 Difference]: Without dead ends: 543 [2021-10-13 07:16:27,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:27,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-10-13 07:16:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 376. [2021-10-13 07:16:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 362 states have (on average 1.4585635359116023) internal successors, (528), 375 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 528 transitions. [2021-10-13 07:16:27,734 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 528 transitions. Word has length 62 [2021-10-13 07:16:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:27,735 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 528 transitions. [2021-10-13 07:16:27,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 528 transitions. [2021-10-13 07:16:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 07:16:27,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:27,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:27,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:27,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:27,949 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:27,950 INFO L82 PathProgramCache]: Analyzing trace with hash 154319780, now seen corresponding path program 1 times [2021-10-13 07:16:27,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:27,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451770602] [2021-10-13 07:16:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:27,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:27,952 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:27,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:16:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:28,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:28,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:28,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:28,629 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:28,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451770602] [2021-10-13 07:16:28,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451770602] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:28,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:28,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:28,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638230554] [2021-10-13 07:16:28,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:28,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:28,632 INFO L87 Difference]: Start difference. First operand 376 states and 528 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:28,703 INFO L93 Difference]: Finished difference Result 769 states and 1097 transitions. [2021-10-13 07:16:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:28,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-10-13 07:16:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:28,707 INFO L225 Difference]: With dead ends: 769 [2021-10-13 07:16:28,707 INFO L226 Difference]: Without dead ends: 502 [2021-10-13 07:16:28,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-13 07:16:28,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 364. [2021-10-13 07:16:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 352 states have (on average 1.4488636363636365) internal successors, (510), 363 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 510 transitions. [2021-10-13 07:16:28,736 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 510 transitions. Word has length 66 [2021-10-13 07:16:28,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:28,737 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 510 transitions. [2021-10-13 07:16:28,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 510 transitions. [2021-10-13 07:16:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 07:16:28,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:28,743 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:28,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:28,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:28,955 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:28,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:28,956 INFO L82 PathProgramCache]: Analyzing trace with hash 774595898, now seen corresponding path program 1 times [2021-10-13 07:16:28,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:28,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896613994] [2021-10-13 07:16:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:28,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:28,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:28,957 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:28,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:16:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:29,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:29,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:29,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:29,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:29,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896613994] [2021-10-13 07:16:29,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896613994] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:29,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:29,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:16:29,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419791386] [2021-10-13 07:16:29,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:16:29,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:29,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:16:29,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:16:29,801 INFO L87 Difference]: Start difference. First operand 364 states and 510 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:30,011 INFO L93 Difference]: Finished difference Result 1344 states and 1909 transitions. [2021-10-13 07:16:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:16:30,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-10-13 07:16:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:30,019 INFO L225 Difference]: With dead ends: 1344 [2021-10-13 07:16:30,019 INFO L226 Difference]: Without dead ends: 1089 [2021-10-13 07:16:30,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:16:30,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-10-13 07:16:30,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 381. [2021-10-13 07:16:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.4308943089430894) internal successors, (528), 380 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 528 transitions. [2021-10-13 07:16:30,069 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 528 transitions. Word has length 67 [2021-10-13 07:16:30,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:30,069 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 528 transitions. [2021-10-13 07:16:30,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 528 transitions. [2021-10-13 07:16:30,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 07:16:30,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:30,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:30,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:30,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:30,287 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash 888803001, now seen corresponding path program 1 times [2021-10-13 07:16:30,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:30,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828696657] [2021-10-13 07:16:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:30,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:30,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:30,289 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:16:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:30,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:30,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:30,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:30,983 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:30,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828696657] [2021-10-13 07:16:30,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828696657] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:30,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:30,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:30,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899020751] [2021-10-13 07:16:30,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:30,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:30,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:30,986 INFO L87 Difference]: Start difference. First operand 381 states and 528 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:31,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:31,073 INFO L93 Difference]: Finished difference Result 793 states and 1127 transitions. [2021-10-13 07:16:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:31,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-10-13 07:16:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:31,077 INFO L225 Difference]: With dead ends: 793 [2021-10-13 07:16:31,077 INFO L226 Difference]: Without dead ends: 538 [2021-10-13 07:16:31,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-13 07:16:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 361. [2021-10-13 07:16:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 353 states have (on average 1.405099150141643) internal successors, (496), 360 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 496 transitions. [2021-10-13 07:16:31,110 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 496 transitions. Word has length 69 [2021-10-13 07:16:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:31,111 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 496 transitions. [2021-10-13 07:16:31,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 496 transitions. [2021-10-13 07:16:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 07:16:31,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:31,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:31,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:31,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:31,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:31,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1196263407, now seen corresponding path program 1 times [2021-10-13 07:16:31,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:31,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744068187] [2021-10-13 07:16:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:31,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:31,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:31,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:31,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:16:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:31,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:32,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:32,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:32,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744068187] [2021-10-13 07:16:32,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744068187] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:32,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:32,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:32,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509355334] [2021-10-13 07:16:32,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:32,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:32,154 INFO L87 Difference]: Start difference. First operand 361 states and 496 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:32,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:32,233 INFO L93 Difference]: Finished difference Result 750 states and 1051 transitions. [2021-10-13 07:16:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:32,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-10-13 07:16:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:32,237 INFO L225 Difference]: With dead ends: 750 [2021-10-13 07:16:32,237 INFO L226 Difference]: Without dead ends: 515 [2021-10-13 07:16:32,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-10-13 07:16:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 349. [2021-10-13 07:16:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 343 states have (on average 1.3935860058309038) internal successors, (478), 348 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 478 transitions. [2021-10-13 07:16:32,276 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 478 transitions. Word has length 73 [2021-10-13 07:16:32,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:32,277 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 478 transitions. [2021-10-13 07:16:32,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 478 transitions. [2021-10-13 07:16:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-13 07:16:32,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:32,278 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:32,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:32,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:32,491 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:32,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1358848973, now seen corresponding path program 1 times [2021-10-13 07:16:32,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:32,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023639146] [2021-10-13 07:16:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:32,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:32,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:32,493 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:32,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:16:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:32,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:32,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:33,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:33,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:33,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023639146] [2021-10-13 07:16:33,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023639146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:33,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:33,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:16:33,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148651813] [2021-10-13 07:16:33,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:16:33,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:16:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:16:33,432 INFO L87 Difference]: Start difference. First operand 349 states and 478 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:33,650 INFO L93 Difference]: Finished difference Result 1021 states and 1430 transitions. [2021-10-13 07:16:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:16:33,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-10-13 07:16:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:33,655 INFO L225 Difference]: With dead ends: 1021 [2021-10-13 07:16:33,656 INFO L226 Difference]: Without dead ends: 798 [2021-10-13 07:16:33,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 75.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:16:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-13 07:16:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 353. [2021-10-13 07:16:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 347 states have (on average 1.3890489913544668) internal successors, (482), 352 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 482 transitions. [2021-10-13 07:16:33,707 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 482 transitions. Word has length 76 [2021-10-13 07:16:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:33,707 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 482 transitions. [2021-10-13 07:16:33,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 482 transitions. [2021-10-13 07:16:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-13 07:16:33,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:33,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:33,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:33,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:33,922 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash 917353494, now seen corresponding path program 1 times [2021-10-13 07:16:33,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:33,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800265507] [2021-10-13 07:16:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:33,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:33,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:33,925 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:33,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:16:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:34,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:16:34,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:34,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:34,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:34,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800265507] [2021-10-13 07:16:34,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800265507] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:34,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:34,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-13 07:16:34,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751665810] [2021-10-13 07:16:34,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:16:34,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:16:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:16:34,918 INFO L87 Difference]: Start difference. First operand 353 states and 482 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:35,261 INFO L93 Difference]: Finished difference Result 1441 states and 2002 transitions. [2021-10-13 07:16:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:16:35,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 76 [2021-10-13 07:16:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:35,268 INFO L225 Difference]: With dead ends: 1441 [2021-10-13 07:16:35,269 INFO L226 Difference]: Without dead ends: 1218 [2021-10-13 07:16:35,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:16:35,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-13 07:16:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 385. [2021-10-13 07:16:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 379 states have (on average 1.366754617414248) internal successors, (518), 384 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 518 transitions. [2021-10-13 07:16:35,313 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 518 transitions. Word has length 76 [2021-10-13 07:16:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:35,314 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 518 transitions. [2021-10-13 07:16:35,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 518 transitions. [2021-10-13 07:16:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 07:16:35,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:35,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:35,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:35,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:35,528 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1803348706, now seen corresponding path program 1 times [2021-10-13 07:16:35,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:35,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115193571] [2021-10-13 07:16:35,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:35,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:35,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:35,531 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:35,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:16:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:36,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:16:36,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:36,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:36,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:36,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115193571] [2021-10-13 07:16:36,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115193571] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:36,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:36,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-13 07:16:36,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122954673] [2021-10-13 07:16:36,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:16:36,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:16:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:16:36,720 INFO L87 Difference]: Start difference. First operand 385 states and 518 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:37,037 INFO L93 Difference]: Finished difference Result 1319 states and 1823 transitions. [2021-10-13 07:16:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:16:37,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 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 77 [2021-10-13 07:16:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:37,045 INFO L225 Difference]: With dead ends: 1319 [2021-10-13 07:16:37,046 INFO L226 Difference]: Without dead ends: 1075 [2021-10-13 07:16:37,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:16:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-10-13 07:16:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 410. [2021-10-13 07:16:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.349009900990099) internal successors, (545), 409 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2021-10-13 07:16:37,100 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 77 [2021-10-13 07:16:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:37,100 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2021-10-13 07:16:37,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2021-10-13 07:16:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 07:16:37,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:37,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:37,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:37,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:37,315 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1901865052, now seen corresponding path program 1 times [2021-10-13 07:16:37,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:37,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159558640] [2021-10-13 07:16:37,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:37,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:37,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:37,317 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:16:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:37,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:37,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:38,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:38,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:38,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159558640] [2021-10-13 07:16:38,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159558640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:38,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:38,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:16:38,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620545485] [2021-10-13 07:16:38,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:16:38,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:38,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:16:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:16:38,336 INFO L87 Difference]: Start difference. First operand 410 states and 545 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:38,511 INFO L93 Difference]: Finished difference Result 1091 states and 1463 transitions. [2021-10-13 07:16:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:16:38,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-10-13 07:16:38,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:38,517 INFO L225 Difference]: With dead ends: 1091 [2021-10-13 07:16:38,517 INFO L226 Difference]: Without dead ends: 833 [2021-10-13 07:16:38,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:16:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-10-13 07:16:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 640. [2021-10-13 07:16:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 634 states have (on average 1.3201892744479495) internal successors, (837), 639 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 837 transitions. [2021-10-13 07:16:38,591 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 837 transitions. Word has length 77 [2021-10-13 07:16:38,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:38,591 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 837 transitions. [2021-10-13 07:16:38,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 837 transitions. [2021-10-13 07:16:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 07:16:38,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:38,593 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:38,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:38,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:38,807 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1711536105, now seen corresponding path program 1 times [2021-10-13 07:16:38,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:38,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350628690] [2021-10-13 07:16:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:38,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:38,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:38,809 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:38,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:16:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:39,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:16:39,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:39,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:39,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:39,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350628690] [2021-10-13 07:16:39,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350628690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:39,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:39,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:16:39,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623138478] [2021-10-13 07:16:39,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:16:39,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:16:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:16:39,821 INFO L87 Difference]: Start difference. First operand 640 states and 837 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:40,227 INFO L93 Difference]: Finished difference Result 1522 states and 2000 transitions. [2021-10-13 07:16:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:16:40,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 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 79 [2021-10-13 07:16:40,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:40,232 INFO L225 Difference]: With dead ends: 1522 [2021-10-13 07:16:40,233 INFO L226 Difference]: Without dead ends: 941 [2021-10-13 07:16:40,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:16:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-10-13 07:16:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 559. [2021-10-13 07:16:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 553 states have (on average 1.3273056057866184) internal successors, (734), 558 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 734 transitions. [2021-10-13 07:16:40,307 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 734 transitions. Word has length 79 [2021-10-13 07:16:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:40,307 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 734 transitions. [2021-10-13 07:16:40,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 734 transitions. [2021-10-13 07:16:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 07:16:40,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:40,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:40,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:40,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:40,523 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash 172299307, now seen corresponding path program 1 times [2021-10-13 07:16:40,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:40,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651084052] [2021-10-13 07:16:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:40,524 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:40,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:40,525 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:40,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:16:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:41,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:16:41,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:41,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:41,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:41,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651084052] [2021-10-13 07:16:41,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651084052] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:41,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:41,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-13 07:16:41,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111336460] [2021-10-13 07:16:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:16:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:16:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:16:41,673 INFO L87 Difference]: Start difference. First operand 559 states and 734 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:42,022 INFO L93 Difference]: Finished difference Result 1718 states and 2366 transitions. [2021-10-13 07:16:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:16:42,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 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 79 [2021-10-13 07:16:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:42,030 INFO L225 Difference]: With dead ends: 1718 [2021-10-13 07:16:42,030 INFO L226 Difference]: Without dead ends: 1303 [2021-10-13 07:16:42,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:16:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-10-13 07:16:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 532. [2021-10-13 07:16:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 526 states have (on average 1.326996197718631) internal successors, (698), 531 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 698 transitions. [2021-10-13 07:16:42,097 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 698 transitions. Word has length 79 [2021-10-13 07:16:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:42,097 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 698 transitions. [2021-10-13 07:16:42,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 698 transitions. [2021-10-13 07:16:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 07:16:42,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:42,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:42,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:42,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:42,313 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash -504696615, now seen corresponding path program 1 times [2021-10-13 07:16:42,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:42,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989619487] [2021-10-13 07:16:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:42,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:42,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:42,316 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:42,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:16:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:43,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:43,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:43,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:43,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:43,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989619487] [2021-10-13 07:16:43,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989619487] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:43,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:43,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:16:43,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066288041] [2021-10-13 07:16:43,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:16:43,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:16:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:16:43,416 INFO L87 Difference]: Start difference. First operand 532 states and 698 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:43,596 INFO L93 Difference]: Finished difference Result 1463 states and 1958 transitions. [2021-10-13 07:16:43,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:16:43,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-10-13 07:16:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:43,602 INFO L225 Difference]: With dead ends: 1463 [2021-10-13 07:16:43,602 INFO L226 Difference]: Without dead ends: 1075 [2021-10-13 07:16:43,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:16:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-10-13 07:16:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 740. [2021-10-13 07:16:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.3092643051771118) internal successors, (961), 739 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 961 transitions. [2021-10-13 07:16:43,689 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 961 transitions. Word has length 79 [2021-10-13 07:16:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:43,689 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 961 transitions. [2021-10-13 07:16:43,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 961 transitions. [2021-10-13 07:16:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 07:16:43,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:43,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:43,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:43,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:43,904 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:43,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1939098077, now seen corresponding path program 1 times [2021-10-13 07:16:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:43,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326391810] [2021-10-13 07:16:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:43,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:43,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:43,906 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:43,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:16:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:44,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:44,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:44,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:45,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:45,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326391810] [2021-10-13 07:16:45,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326391810] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:45,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:45,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:16:45,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716013147] [2021-10-13 07:16:45,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:16:45,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:16:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:16:45,093 INFO L87 Difference]: Start difference. First operand 740 states and 961 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:45,360 INFO L93 Difference]: Finished difference Result 2044 states and 2751 transitions. [2021-10-13 07:16:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:16:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-10-13 07:16:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:45,368 INFO L225 Difference]: With dead ends: 2044 [2021-10-13 07:16:45,368 INFO L226 Difference]: Without dead ends: 1505 [2021-10-13 07:16:45,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:16:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-13 07:16:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 762. [2021-10-13 07:16:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 756 states have (on average 1.3042328042328042) internal successors, (986), 761 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 986 transitions. [2021-10-13 07:16:45,477 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 986 transitions. Word has length 80 [2021-10-13 07:16:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:45,477 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 986 transitions. [2021-10-13 07:16:45,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 986 transitions. [2021-10-13 07:16:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 07:16:45,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:45,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:45,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-13 07:16:45,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:45,693 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:45,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:45,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1575332288, now seen corresponding path program 1 times [2021-10-13 07:16:45,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:45,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227148090] [2021-10-13 07:16:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:45,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:45,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:45,695 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:45,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:16:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:46,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:46,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:46,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:46,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:46,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227148090] [2021-10-13 07:16:46,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227148090] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:46,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:46,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:16:46,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868816409] [2021-10-13 07:16:46,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:16:46,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:46,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:16:46,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:16:46,850 INFO L87 Difference]: Start difference. First operand 762 states and 986 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:47,099 INFO L93 Difference]: Finished difference Result 1970 states and 2661 transitions. [2021-10-13 07:16:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:16:47,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-10-13 07:16:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:47,104 INFO L225 Difference]: With dead ends: 1970 [2021-10-13 07:16:47,104 INFO L226 Difference]: Without dead ends: 1431 [2021-10-13 07:16:47,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:16:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-10-13 07:16:47,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 772. [2021-10-13 07:16:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 766 states have (on average 1.3002610966057442) internal successors, (996), 771 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 996 transitions. [2021-10-13 07:16:47,208 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 996 transitions. Word has length 81 [2021-10-13 07:16:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:47,208 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 996 transitions. [2021-10-13 07:16:47,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 996 transitions. [2021-10-13 07:16:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 07:16:47,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:47,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:47,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-13 07:16:47,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:47,422 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:47,422 INFO L82 PathProgramCache]: Analyzing trace with hash -63459148, now seen corresponding path program 1 times [2021-10-13 07:16:47,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:47,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179250787] [2021-10-13 07:16:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:47,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:47,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:47,424 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:47,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:16:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:48,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:16:48,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:48,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:48,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:48,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179250787] [2021-10-13 07:16:48,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179250787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:48,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:48,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:16:48,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842070631] [2021-10-13 07:16:48,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:16:48,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:48,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:16:48,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:16:48,645 INFO L87 Difference]: Start difference. First operand 772 states and 996 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:48,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:48,996 INFO L93 Difference]: Finished difference Result 1844 states and 2413 transitions. [2021-10-13 07:16:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:16:48,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 82 [2021-10-13 07:16:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:49,001 INFO L225 Difference]: With dead ends: 1844 [2021-10-13 07:16:49,001 INFO L226 Difference]: Without dead ends: 1153 [2021-10-13 07:16:49,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:16:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-10-13 07:16:49,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 714. [2021-10-13 07:16:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 708 states have (on average 1.2966101694915255) internal successors, (918), 713 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 918 transitions. [2021-10-13 07:16:49,095 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 918 transitions. Word has length 82 [2021-10-13 07:16:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:49,095 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 918 transitions. [2021-10-13 07:16:49,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 918 transitions. [2021-10-13 07:16:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 07:16:49,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:49,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:49,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:49,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:49,311 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:49,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:49,311 INFO L82 PathProgramCache]: Analyzing trace with hash -746810523, now seen corresponding path program 1 times [2021-10-13 07:16:49,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:49,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099373138] [2021-10-13 07:16:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:49,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:49,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:49,312 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:49,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 07:16:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:50,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:16:50,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:50,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:50,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:50,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099373138] [2021-10-13 07:16:50,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099373138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:50,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:50,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:16:50,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746653350] [2021-10-13 07:16:50,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:16:50,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:50,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:16:50,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:50,438 INFO L87 Difference]: Start difference. First operand 714 states and 918 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:50,627 INFO L93 Difference]: Finished difference Result 1378 states and 1827 transitions. [2021-10-13 07:16:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:16:50,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-10-13 07:16:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:50,632 INFO L225 Difference]: With dead ends: 1378 [2021-10-13 07:16:50,633 INFO L226 Difference]: Without dead ends: 839 [2021-10-13 07:16:50,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:16:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-10-13 07:16:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 710. [2021-10-13 07:16:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 705 states have (on average 1.2921985815602837) internal successors, (911), 709 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 911 transitions. [2021-10-13 07:16:50,757 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 911 transitions. Word has length 85 [2021-10-13 07:16:50,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:50,757 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 911 transitions. [2021-10-13 07:16:50,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 911 transitions. [2021-10-13 07:16:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 07:16:50,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:50,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:50,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:50,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:50,973 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:50,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1901583634, now seen corresponding path program 1 times [2021-10-13 07:16:50,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:50,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632356954] [2021-10-13 07:16:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:50,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:50,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:50,975 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:50,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:16:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:51,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:51,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:52,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:52,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:52,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632356954] [2021-10-13 07:16:52,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632356954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:52,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:52,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:16:52,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70226165] [2021-10-13 07:16:52,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:16:52,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:16:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:16:52,276 INFO L87 Difference]: Start difference. First operand 710 states and 911 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:52,546 INFO L93 Difference]: Finished difference Result 2169 states and 2937 transitions. [2021-10-13 07:16:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:16:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-10-13 07:16:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:52,554 INFO L225 Difference]: With dead ends: 2169 [2021-10-13 07:16:52,554 INFO L226 Difference]: Without dead ends: 1634 [2021-10-13 07:16:52,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:16:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-10-13 07:16:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 704. [2021-10-13 07:16:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 699 states have (on average 1.2947067238912733) internal successors, (905), 703 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 905 transitions. [2021-10-13 07:16:52,668 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 905 transitions. Word has length 85 [2021-10-13 07:16:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:52,668 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 905 transitions. [2021-10-13 07:16:52,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 905 transitions. [2021-10-13 07:16:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-13 07:16:52,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:52,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:52,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-13 07:16:52,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:52,872 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2039666434, now seen corresponding path program 1 times [2021-10-13 07:16:52,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:52,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775063628] [2021-10-13 07:16:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:52,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:52,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:52,874 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:52,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 07:16:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:53,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:53,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:53,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:54,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:54,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775063628] [2021-10-13 07:16:54,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775063628] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:54,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:54,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:16:54,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087540012] [2021-10-13 07:16:54,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:16:54,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:16:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:16:54,129 INFO L87 Difference]: Start difference. First operand 704 states and 905 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:54,314 INFO L93 Difference]: Finished difference Result 1262 states and 1665 transitions. [2021-10-13 07:16:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:16:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 89 [2021-10-13 07:16:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:54,319 INFO L225 Difference]: With dead ends: 1262 [2021-10-13 07:16:54,319 INFO L226 Difference]: Without dead ends: 1260 [2021-10-13 07:16:54,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:16:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-10-13 07:16:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 706. [2021-10-13 07:16:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 701 states have (on average 1.2938659058487874) internal successors, (907), 705 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 907 transitions. [2021-10-13 07:16:54,433 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 907 transitions. Word has length 89 [2021-10-13 07:16:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:54,433 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 907 transitions. [2021-10-13 07:16:54,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 907 transitions. [2021-10-13 07:16:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 07:16:54,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:54,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:16:54,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:54,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:54,648 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:54,648 INFO L82 PathProgramCache]: Analyzing trace with hash -838083920, now seen corresponding path program 1 times [2021-10-13 07:16:54,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:54,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737203314] [2021-10-13 07:16:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:54,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:54,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:54,650 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:54,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 07:16:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:55,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:16:55,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:55,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:56,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:56,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737203314] [2021-10-13 07:16:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737203314] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:16:56,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:16:56,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:16:56,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371821436] [2021-10-13 07:16:56,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:16:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:16:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:16:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:16:56,170 INFO L87 Difference]: Start difference. First operand 706 states and 907 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:16:56,452 INFO L93 Difference]: Finished difference Result 1662 states and 2259 transitions. [2021-10-13 07:16:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:16:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 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 90 [2021-10-13 07:16:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:16:56,456 INFO L225 Difference]: With dead ends: 1662 [2021-10-13 07:16:56,456 INFO L226 Difference]: Without dead ends: 1125 [2021-10-13 07:16:56,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:16:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-10-13 07:16:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 712. [2021-10-13 07:16:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 707 states have (on average 1.2913719943422914) internal successors, (913), 711 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 913 transitions. [2021-10-13 07:16:56,539 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 913 transitions. Word has length 90 [2021-10-13 07:16:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:16:56,539 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 913 transitions. [2021-10-13 07:16:56,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:16:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 913 transitions. [2021-10-13 07:16:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-13 07:16:56,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:16:56,541 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:16:56,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:16:56,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:16:56,742 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:16:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:16:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2028148931, now seen corresponding path program 1 times [2021-10-13 07:16:56,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:16:56,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155380525] [2021-10-13 07:16:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:56,743 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:16:56,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:16:56,744 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:16:56,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 07:16:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:16:57,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:16:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:16:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:58,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:16:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:16:58,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:16:58,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155380525] [2021-10-13 07:16:58,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155380525] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:16:58,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1881325931] [2021-10-13 07:16:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:16:58,898 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:16:58,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:16:58,899 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:16:58,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-10-13 07:17:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:00,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:17:00,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:00,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:01,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1881325931] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:01,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073837006] [2021-10-13 07:17:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:01,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:01,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:01,259 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:17:01,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 07:17:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:02,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:17:02,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:03,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:03,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073837006] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:03,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:17:03,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-13 07:17:03,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115955360] [2021-10-13 07:17:03,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 07:17:03,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 07:17:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:17:03,559 INFO L87 Difference]: Start difference. First operand 712 states and 913 transitions. Second operand has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 17 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:05,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:05,520 INFO L93 Difference]: Finished difference Result 2621 states and 3464 transitions. [2021-10-13 07:17:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 07:17:05,521 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 17 states have internal predecessors, (235), 0 states have call successors, (0), 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 139 [2021-10-13 07:17:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:05,531 INFO L225 Difference]: With dead ends: 2621 [2021-10-13 07:17:05,531 INFO L226 Difference]: Without dead ends: 2084 [2021-10-13 07:17:05,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 806 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 918.4ms TimeCoverageRelationStatistics Valid=709, Invalid=2831, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 07:17:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-10-13 07:17:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1040. [2021-10-13 07:17:05,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1035 states have (on average 1.2917874396135265) internal successors, (1337), 1039 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1337 transitions. [2021-10-13 07:17:05,691 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1337 transitions. Word has length 139 [2021-10-13 07:17:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:05,692 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1337 transitions. [2021-10-13 07:17:05,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 17 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1337 transitions. [2021-10-13 07:17:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-10-13 07:17:05,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:05,695 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:17:05,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:05,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-13 07:17:06,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-13 07:17:06,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:06,299 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:17:06,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:06,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1021878235, now seen corresponding path program 1 times [2021-10-13 07:17:06,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:06,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955935541] [2021-10-13 07:17:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:06,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:06,300 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:06,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 07:17:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:07,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:17:07,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:08,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:08,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:08,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955935541] [2021-10-13 07:17:08,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955935541] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:08,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1386634397] [2021-10-13 07:17:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:08,715 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:17:08,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:17:08,717 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:17:08,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-10-13 07:17:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:10,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:17:10,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:11,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:11,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1386634397] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:11,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82827106] [2021-10-13 07:17:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:11,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:11,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:11,380 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:17:11,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 07:17:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:12,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:17:12,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:13,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:13,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82827106] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:13,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:17:13,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-13 07:17:13,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426381984] [2021-10-13 07:17:13,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 07:17:13,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 07:17:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:17:13,895 INFO L87 Difference]: Start difference. First operand 1040 states and 1337 transitions. Second operand has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:16,120 INFO L93 Difference]: Finished difference Result 4332 states and 5727 transitions. [2021-10-13 07:17:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 07:17:16,120 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 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 140 [2021-10-13 07:17:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:16,129 INFO L225 Difference]: With dead ends: 4332 [2021-10-13 07:17:16,129 INFO L226 Difference]: Without dead ends: 3538 [2021-10-13 07:17:16,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 812 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 928.3ms TimeCoverageRelationStatistics Valid=914, Invalid=3642, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 07:17:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-10-13 07:17:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 1567. [2021-10-13 07:17:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1562 states have (on average 1.296414852752881) internal successors, (2025), 1566 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2025 transitions. [2021-10-13 07:17:16,416 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2025 transitions. Word has length 140 [2021-10-13 07:17:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:16,416 INFO L470 AbstractCegarLoop]: Abstraction has 1567 states and 2025 transitions. [2021-10-13 07:17:16,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2025 transitions. [2021-10-13 07:17:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 07:17:16,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:16,419 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:17:16,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:16,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-10-13 07:17:16,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-13 07:17:17,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:17,020 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:17:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1852834664, now seen corresponding path program 1 times [2021-10-13 07:17:17,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:17,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513396274] [2021-10-13 07:17:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:17,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:17,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:17,023 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:17,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 07:17:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:17:18,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:19,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:19,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:19,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513396274] [2021-10-13 07:17:19,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513396274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:19,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160635183] [2021-10-13 07:17:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:19,434 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:17:19,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:17:19,435 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:17:19,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-10-13 07:17:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:17:21,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:21,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:22,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1160635183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:22,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747456959] [2021-10-13 07:17:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:22,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:22,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:22,231 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:17:22,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 07:17:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:24,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:17:24,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:24,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:24,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747456959] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:24,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:17:24,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-10-13 07:17:24,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486820435] [2021-10-13 07:17:24,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:17:24,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:17:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:17:24,770 INFO L87 Difference]: Start difference. First operand 1567 states and 2025 transitions. Second operand has 12 states, 12 states have (on average 21.416666666666668) internal successors, (257), 11 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:26,022 INFO L93 Difference]: Finished difference Result 5817 states and 7761 transitions. [2021-10-13 07:17:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:17:26,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.416666666666668) internal successors, (257), 11 states have internal predecessors, (257), 0 states have call successors, (0), 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 141 [2021-10-13 07:17:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:26,034 INFO L225 Difference]: With dead ends: 5817 [2021-10-13 07:17:26,034 INFO L226 Difference]: Without dead ends: 4594 [2021-10-13 07:17:26,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 824 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 261.0ms TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2021-10-13 07:17:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-10-13 07:17:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 1872. [2021-10-13 07:17:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1867 states have (on average 1.3069094804499197) internal successors, (2440), 1871 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:26,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2440 transitions. [2021-10-13 07:17:26,361 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2440 transitions. Word has length 141 [2021-10-13 07:17:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:26,361 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 2440 transitions. [2021-10-13 07:17:26,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.416666666666668) internal successors, (257), 11 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:26,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2440 transitions. [2021-10-13 07:17:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-13 07:17:26,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:26,364 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:17:26,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-13 07:17:26,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2021-10-13 07:17:26,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-13 07:17:26,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:26,979 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:17:26,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:26,979 INFO L82 PathProgramCache]: Analyzing trace with hash 952371056, now seen corresponding path program 1 times [2021-10-13 07:17:26,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:26,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193666696] [2021-10-13 07:17:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:26,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:26,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:26,980 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:26,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 07:17:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:28,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:17:28,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:29,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:29,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:29,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193666696] [2021-10-13 07:17:29,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193666696] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:29,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [424635540] [2021-10-13 07:17:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:29,739 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:17:29,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:17:29,742 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:17:29,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-10-13 07:17:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:32,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:17:32,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 07:17:32,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 07:17:32,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [424635540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:32,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:17:32,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 16 [2021-10-13 07:17:32,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116597329] [2021-10-13 07:17:32,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:17:32,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:32,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:17:32,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:17:32,630 INFO L87 Difference]: Start difference. First operand 1872 states and 2440 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:33,949 INFO L93 Difference]: Finished difference Result 9138 states and 12289 transitions. [2021-10-13 07:17:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:17:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 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 142 [2021-10-13 07:17:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:33,960 INFO L225 Difference]: With dead ends: 9138 [2021-10-13 07:17:33,960 INFO L226 Difference]: Without dead ends: 7610 [2021-10-13 07:17:33,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 555 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 204.9ms TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:17:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2021-10-13 07:17:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 2291. [2021-10-13 07:17:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2286 states have (on average 1.2804024496937882) internal successors, (2927), 2290 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:34,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2927 transitions. [2021-10-13 07:17:34,426 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2927 transitions. Word has length 142 [2021-10-13 07:17:34,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:34,427 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 2927 transitions. [2021-10-13 07:17:34,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2927 transitions. [2021-10-13 07:17:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-13 07:17:34,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:34,432 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:17:34,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:34,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2021-10-13 07:17:34,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:17:34,846 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:17:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1573370662, now seen corresponding path program 1 times [2021-10-13 07:17:34,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:34,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546893161] [2021-10-13 07:17:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:34,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:34,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:34,848 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:34,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 07:17:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:36,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:17:36,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:17:37,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:17:37,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:37,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546893161] [2021-10-13 07:17:37,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546893161] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:37,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:37,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:17:37,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533264603] [2021-10-13 07:17:37,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:17:37,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:17:37,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:17:37,448 INFO L87 Difference]: Start difference. First operand 2291 states and 2927 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:38,229 INFO L93 Difference]: Finished difference Result 6573 states and 8621 transitions. [2021-10-13 07:17:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:17:38,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 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 142 [2021-10-13 07:17:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:38,238 INFO L225 Difference]: With dead ends: 6573 [2021-10-13 07:17:38,239 INFO L226 Difference]: Without dead ends: 4606 [2021-10-13 07:17:38,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:17:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2021-10-13 07:17:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 2291. [2021-10-13 07:17:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2286 states have (on average 1.279527559055118) internal successors, (2925), 2290 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2925 transitions. [2021-10-13 07:17:38,694 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2925 transitions. Word has length 142 [2021-10-13 07:17:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:38,694 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 2925 transitions. [2021-10-13 07:17:38,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2925 transitions. [2021-10-13 07:17:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-13 07:17:38,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:38,699 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:17:38,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:38,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:38,906 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:17:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:38,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1592761434, now seen corresponding path program 1 times [2021-10-13 07:17:38,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:38,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523049011] [2021-10-13 07:17:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:38,907 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:38,909 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:38,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 07:17:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:41,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:17:41,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:41,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:41,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:41,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523049011] [2021-10-13 07:17:41,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523049011] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:41,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [963774999] [2021-10-13 07:17:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:41,750 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:17:41,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:17:41,751 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:17:41,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-10-13 07:17:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:44,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:17:44,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:44,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:44,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [963774999] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:44,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710273117] [2021-10-13 07:17:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:44,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:44,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:44,994 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:17:44,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 07:17:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:47,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:17:47,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:47,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:47,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710273117] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:47,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:17:47,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 8 [2021-10-13 07:17:47,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669555675] [2021-10-13 07:17:47,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:17:47,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:17:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:17:47,957 INFO L87 Difference]: Start difference. First operand 2291 states and 2925 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:49,385 INFO L93 Difference]: Finished difference Result 9482 states and 12331 transitions. [2021-10-13 07:17:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 07:17:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 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 145 [2021-10-13 07:17:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:49,395 INFO L225 Difference]: With dead ends: 9482 [2021-10-13 07:17:49,396 INFO L226 Difference]: Without dead ends: 7535 [2021-10-13 07:17:49,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 856 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-13 07:17:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2021-10-13 07:17:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 4054. [2021-10-13 07:17:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 4049 states have (on average 1.2771054581378118) internal successors, (5171), 4053 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5171 transitions. [2021-10-13 07:17:50,087 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 5171 transitions. Word has length 145 [2021-10-13 07:17:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:50,087 INFO L470 AbstractCegarLoop]: Abstraction has 4054 states and 5171 transitions. [2021-10-13 07:17:50,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 5171 transitions. [2021-10-13 07:17:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-13 07:17:50,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:50,094 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:17:50,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:50,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:50,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-13 07:17:50,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:50,703 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:17:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:50,703 INFO L82 PathProgramCache]: Analyzing trace with hash 729040484, now seen corresponding path program 1 times [2021-10-13 07:17:50,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:50,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902393562] [2021-10-13 07:17:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:50,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:50,705 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:50,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 07:17:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:52,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:17:52,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 07:17:53,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 07:17:53,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:53,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902393562] [2021-10-13 07:17:53,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902393562] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:53,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:53,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:17:53,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248258000] [2021-10-13 07:17:53,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:17:53,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:17:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:17:53,558 INFO L87 Difference]: Start difference. First operand 4054 states and 5171 transitions. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:54,122 INFO L93 Difference]: Finished difference Result 6721 states and 8720 transitions. [2021-10-13 07:17:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:17:54,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 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 145 [2021-10-13 07:17:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:54,125 INFO L225 Difference]: With dead ends: 6721 [2021-10-13 07:17:54,125 INFO L226 Difference]: Without dead ends: 3011 [2021-10-13 07:17:54,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:17:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-10-13 07:17:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2999. [2021-10-13 07:17:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2994 states have (on average 1.2872411489645958) internal successors, (3854), 2998 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3854 transitions. [2021-10-13 07:17:54,589 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3854 transitions. Word has length 145 [2021-10-13 07:17:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:54,589 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 3854 transitions. [2021-10-13 07:17:54,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:17:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3854 transitions. [2021-10-13 07:17:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-13 07:17:54,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:54,594 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:17:54,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:54,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:54,813 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:17:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:54,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2088283744, now seen corresponding path program 1 times [2021-10-13 07:17:54,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:54,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377966147] [2021-10-13 07:17:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:54,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:54,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:54,814 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:54,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 07:17:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:57,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:17:57,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:57,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:58,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:58,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377966147] [2021-10-13 07:17:58,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377966147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:58,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1171192189] [2021-10-13 07:17:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:58,177 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:17:58,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:17:58,178 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:17:58,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-10-13 07:18:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:01,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:18:01,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:18:01,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:18:02,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1171192189] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:02,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101547196] [2021-10-13 07:18:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:02,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:18:02,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:18:02,121 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:18:02,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 07:18:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:04,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:18:04,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:18:05,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:18:05,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101547196] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:05,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:18:05,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7, 7, 7] total 24 [2021-10-13 07:18:05,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884902909] [2021-10-13 07:18:05,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 07:18:05,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:05,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 07:18:05,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-10-13 07:18:05,447 INFO L87 Difference]: Start difference. First operand 2999 states and 3854 transitions. Second operand has 24 states, 24 states have (on average 18.25) internal successors, (438), 24 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:18:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:20,755 INFO L93 Difference]: Finished difference Result 19519 states and 25894 transitions. [2021-10-13 07:18:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2021-10-13 07:18:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 18.25) internal successors, (438), 24 states have internal predecessors, (438), 0 states have call successors, (0), 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 145 [2021-10-13 07:18:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:20,771 INFO L225 Difference]: With dead ends: 19519 [2021-10-13 07:18:20,771 INFO L226 Difference]: Without dead ends: 16884 [2021-10-13 07:18:20,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 881 SyntacticMatches, 2 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43879 ImplicationChecksByTransitivity, 8470.8ms TimeCoverageRelationStatistics Valid=13853, Invalid=86319, Unknown=0, NotChecked=0, Total=100172 [2021-10-13 07:18:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16884 states. [2021-10-13 07:18:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16884 to 4042. [2021-10-13 07:18:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4042 states, 4037 states have (on average 1.2700024770869458) internal successors, (5127), 4041 states have internal predecessors, (5127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:18:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4042 states to 4042 states and 5127 transitions. [2021-10-13 07:18:21,565 INFO L78 Accepts]: Start accepts. Automaton has 4042 states and 5127 transitions. Word has length 145 [2021-10-13 07:18:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:21,565 INFO L470 AbstractCegarLoop]: Abstraction has 4042 states and 5127 transitions. [2021-10-13 07:18:21,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.25) internal successors, (438), 24 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:18:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4042 states and 5127 transitions. [2021-10-13 07:18:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-13 07:18:21,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:21,571 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:18:21,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:21,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-13 07:18:21,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:22,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:18:22,187 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:18:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:22,187 INFO L82 PathProgramCache]: Analyzing trace with hash -572580853, now seen corresponding path program 1 times [2021-10-13 07:18:22,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:22,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930915731] [2021-10-13 07:18:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:22,188 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:22,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:22,188 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:22,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 07:18:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:24,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:18:24,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 07:18:25,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 07:18:25,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:25,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930915731] [2021-10-13 07:18:25,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930915731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:18:25,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:18:25,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-13 07:18:25,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971838736] [2021-10-13 07:18:25,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:18:25,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:18:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:18:25,513 INFO L87 Difference]: Start difference. First operand 4042 states and 5127 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:18:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:27,367 INFO L93 Difference]: Finished difference Result 13405 states and 17454 transitions. [2021-10-13 07:18:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:18:27,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 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 149 [2021-10-13 07:18:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:27,375 INFO L225 Difference]: With dead ends: 13405 [2021-10-13 07:18:27,375 INFO L226 Difference]: Without dead ends: 9792 [2021-10-13 07:18:27,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:18:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2021-10-13 07:18:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 4066. [2021-10-13 07:18:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 4061 states have (on average 1.2681605515882788) internal successors, (5150), 4065 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:18:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 5150 transitions. [2021-10-13 07:18:28,096 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 5150 transitions. Word has length 149 [2021-10-13 07:18:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:28,096 INFO L470 AbstractCegarLoop]: Abstraction has 4066 states and 5150 transitions. [2021-10-13 07:18:28,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:18:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 5150 transitions. [2021-10-13 07:18:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-10-13 07:18:28,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:28,100 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:18:28,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:28,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:28,301 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:18:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash -146521997, now seen corresponding path program 1 times [2021-10-13 07:18:28,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:28,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560960548] [2021-10-13 07:18:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:28,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:28,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:28,303 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:28,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 07:18:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:18:31,182 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:18:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:18:32,025 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:18:32,025 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:18:32,026 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:32,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:32,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:32,240 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:18:32,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:18:32 BoogieIcfgContainer [2021-10-13 07:18:32,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:18:32,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:18:32,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:18:32,504 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:18:32,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:18" (3/4) ... [2021-10-13 07:18:32,507 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:18:32,808 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:18:32,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:18:32,811 INFO L168 Benchmark]: Toolchain (without parser) took 136189.23 ms. Allocated memory was 50.3 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 25.8 MB in the beginning and 550.3 MB in the end (delta: -524.5 MB). Peak memory consumption was 652.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:32,811 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:18:32,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.16 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.6 MB in the beginning and 35.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:32,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.83 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 31.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:32,813 INFO L168 Benchmark]: Boogie Preprocessor took 80.73 ms. Allocated memory is still 60.8 MB. Free memory was 31.2 MB in the beginning and 39.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:32,817 INFO L168 Benchmark]: RCFGBuilder took 1167.72 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 27.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:32,818 INFO L168 Benchmark]: TraceAbstraction took 134101.96 ms. Allocated memory was 60.8 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 27.0 MB in the beginning and 599.5 MB in the end (delta: -572.6 MB). Peak memory consumption was 595.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:32,818 INFO L168 Benchmark]: Witness Printer took 305.59 ms. Allocated memory is still 1.2 GB. Free memory was 598.5 MB in the beginning and 550.3 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:32,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 447.16 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.6 MB in the beginning and 35.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.83 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 31.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.73 ms. Allocated memory is still 60.8 MB. Free memory was 31.2 MB in the beginning and 39.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1167.72 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 27.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 134101.96 ms. Allocated memory was 60.8 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 27.0 MB in the beginning and 599.5 MB in the end (delta: -572.6 MB). Peak memory consumption was 595.5 MB. Max. memory is 16.1 GB. * Witness Printer took 305.59 ms. Allocated memory is still 1.2 GB. Free memory was 598.5 MB in the beginning and 550.3 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 618]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] msg_t nomsg = (msg_t )-1; [L25] port_t cs1 ; [L26] int8_t cs1_old ; [L27] int8_t cs1_new ; [L28] port_t cs2 ; [L29] int8_t cs2_old ; [L30] int8_t cs2_new ; [L31] port_t s1s2 ; [L32] int8_t s1s2_old ; [L33] int8_t s1s2_new ; [L34] port_t s1s1 ; [L35] int8_t s1s1_old ; [L36] int8_t s1s1_new ; [L37] port_t s2s1 ; [L38] int8_t s2s1_old ; [L39] int8_t s2s1_new ; [L40] port_t s2s2 ; [L41] int8_t s2s2_old ; [L42] int8_t s2s2_new ; [L43] port_t s1p ; [L44] int8_t s1p_old ; [L45] int8_t s1p_new ; [L46] port_t s2p ; [L47] int8_t s2p_old ; [L48] int8_t s2p_new ; [L51] _Bool side1Failed ; [L52] _Bool side2Failed ; [L53] msg_t side1_written ; [L54] msg_t side2_written ; [L60] static _Bool side1Failed_History_0 ; [L61] static _Bool side1Failed_History_1 ; [L62] static _Bool side1Failed_History_2 ; [L63] static _Bool side2Failed_History_0 ; [L64] static _Bool side2Failed_History_1 ; [L65] static _Bool side2Failed_History_2 ; [L66] static int8_t active_side_History_0 ; [L67] static int8_t active_side_History_1 ; [L68] static int8_t active_side_History_2 ; [L69] static msg_t manual_selection_History_0 ; [L70] static msg_t manual_selection_History_1 ; [L71] static msg_t manual_selection_History_2 ; VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=0, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L542] int c1 ; [L543] int i2 ; [L546] c1 = 0 [L547] side1Failed = __VERIFIER_nondet_bool() [L548] side2Failed = __VERIFIER_nondet_bool() [L549] side1_written = __VERIFIER_nondet_char() [L550] side2_written = __VERIFIER_nondet_char() [L551] side1Failed_History_0 = __VERIFIER_nondet_bool() [L552] side1Failed_History_1 = __VERIFIER_nondet_bool() [L553] side1Failed_History_2 = __VERIFIER_nondet_bool() [L554] side2Failed_History_0 = __VERIFIER_nondet_bool() [L555] side2Failed_History_1 = __VERIFIER_nondet_bool() [L556] side2Failed_History_2 = __VERIFIER_nondet_bool() [L557] active_side_History_0 = __VERIFIER_nondet_char() [L558] active_side_History_1 = __VERIFIER_nondet_char() [L559] active_side_History_2 = __VERIFIER_nondet_char() [L560] manual_selection_History_0 = __VERIFIER_nondet_char() [L561] manual_selection_History_1 = __VERIFIER_nondet_char() [L562] manual_selection_History_2 = __VERIFIER_nondet_char() [L197] COND FALSE !((int )side1Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L200] COND FALSE !((int )side2Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L203] COND FALSE !((int )active_side_History_0 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L206] COND FALSE !((int )manual_selection_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L209] COND FALSE !((int )side1Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L212] COND FALSE !((int )side2Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L215] COND FALSE !((int )active_side_History_1 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L218] COND FALSE !((int )manual_selection_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L221] COND FALSE !((int )side1Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L224] COND FALSE !((int )side2Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L227] COND FALSE !((int )active_side_History_2 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L230] COND FALSE !((int )manual_selection_History_2 != 0) [L233] return (1); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L563] i2 = init() [L58] COND FALSE !(!cond) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L565] cs1_old = nomsg [L566] cs1_new = nomsg [L567] cs2_old = nomsg [L568] cs2_new = nomsg [L569] s1s2_old = nomsg [L570] s1s2_new = nomsg [L571] s1s1_old = nomsg [L572] s1s1_new = nomsg [L573] s2s1_old = nomsg [L574] s2s1_new = nomsg [L575] s2s2_old = nomsg [L576] s2s2_new = nomsg [L577] s1p_old = nomsg [L578] s1p_new = nomsg [L579] s2p_old = nomsg [L580] s2p_new = nomsg [L581] i2 = 0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L582] COND TRUE 1 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND TRUE \read(side1Failed) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] EXPR nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] s1s1_new = nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new [L279] EXPR nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L279] s1s2_new = nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new [L280] EXPR nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L280] s1p_new = nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new [L281] side1_written = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L347] COND TRUE (int )side1 == (int )side2 [L348] next_state = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L408] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L409] COND FALSE !((int )side2 == 0) [L412] active_side = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=128, cs1_old=255, cs2=0, cs2_new=128, cs2_old=255, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L588] cs1_old = cs1_new [L589] cs1_new = nomsg [L590] cs2_old = cs2_new [L591] cs2_new = nomsg [L592] s1s2_old = s1s2_new [L593] s1s2_new = nomsg [L594] s1s1_old = s1s1_new [L595] s1s1_new = nomsg [L596] s2s1_old = s2s1_new [L597] s2s1_new = nomsg [L598] s2s2_old = s2s2_new [L599] s2s2_new = nomsg [L600] s1p_old = s1p_new [L601] s1p_new = nomsg [L602] s2p_old = s2p_new [L603] s2p_new = nomsg [L423] int tmp ; [L424] msg_t tmp___0 ; [L425] _Bool tmp___1 ; [L426] _Bool tmp___2 ; [L427] _Bool tmp___3 ; [L428] _Bool tmp___4 ; [L429] int8_t tmp___5 ; [L430] _Bool tmp___6 ; [L431] _Bool tmp___7 ; [L432] _Bool tmp___8 ; [L433] int8_t tmp___9 ; [L434] _Bool tmp___10 ; [L435] _Bool tmp___11 ; [L436] _Bool tmp___12 ; [L437] msg_t tmp___13 ; [L438] _Bool tmp___14 ; [L439] _Bool tmp___15 ; [L440] _Bool tmp___16 ; [L441] _Bool tmp___17 ; [L442] int8_t tmp___18 ; [L443] int8_t tmp___19 ; [L444] int8_t tmp___20 ; VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L447] COND FALSE !(! side1Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L450] COND TRUE ! side2Failed [L451] tmp = 1 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L456] tmp___0 = read_manual_selection_history((unsigned char)1) [L457] COND TRUE ! tmp___0 [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L458] tmp___1 = read_side1_failed_history((unsigned char)1) [L459] COND TRUE ! tmp___1 [L88] COND TRUE (int )index == 0 [L89] return (side1Failed_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L460] tmp___2 = read_side1_failed_history((unsigned char)0) [L461] COND FALSE !(! tmp___2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L486] tmp___7 = read_side1_failed_history((unsigned char)1) [L487] COND FALSE !(\read(tmp___7)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L502] tmp___11 = read_side1_failed_history((unsigned char)1) [L503] COND TRUE ! tmp___11 [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L504] tmp___12 = read_side2_failed_history((unsigned char)1) [L505] COND FALSE !(\read(tmp___12)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L148] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L151] COND FALSE !((int )index == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L154] COND TRUE (int )index == 2 [L155] return (active_side_History_2); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L518] tmp___20 = read_active_side_history((unsigned char)2) [L519] COND FALSE !((int )tmp___20 > -2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L537] return (1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L604] c1 = check() [L616] COND FALSE !(! arg) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=128, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L582] COND TRUE 1 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=255, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND TRUE \read(side1Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] EXPR nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] s1s1_new = nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new [L279] EXPR nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L279] s1s2_new = nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new [L280] EXPR nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L280] s1p_new = nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new [L281] side1_written = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=128, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L347] COND FALSE !((int )side1 == (int )side2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L350] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L351] COND TRUE (int )side2 != (int )nomsg [L352] next_state = (int8_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L408] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L409] COND TRUE (int )side2 == 0 [L410] active_side = (int8_t )2 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=128, cs2=0, cs2_new=0, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L588] cs1_old = cs1_new [L589] cs1_new = nomsg [L590] cs2_old = cs2_new [L591] cs2_new = nomsg [L592] s1s2_old = s1s2_new [L593] s1s2_new = nomsg [L594] s1s1_old = s1s1_new [L595] s1s1_new = nomsg [L596] s2s1_old = s2s1_new [L597] s2s1_new = nomsg [L598] s2s2_old = s2s2_new [L599] s2s2_new = nomsg [L600] s1p_old = s1p_new [L601] s1p_new = nomsg [L602] s2p_old = s2p_new [L603] s2p_new = nomsg [L423] int tmp ; [L424] msg_t tmp___0 ; [L425] _Bool tmp___1 ; [L426] _Bool tmp___2 ; [L427] _Bool tmp___3 ; [L428] _Bool tmp___4 ; [L429] int8_t tmp___5 ; [L430] _Bool tmp___6 ; [L431] _Bool tmp___7 ; [L432] _Bool tmp___8 ; [L433] int8_t tmp___9 ; [L434] _Bool tmp___10 ; [L435] _Bool tmp___11 ; [L436] _Bool tmp___12 ; [L437] msg_t tmp___13 ; [L438] _Bool tmp___14 ; [L439] _Bool tmp___15 ; [L440] _Bool tmp___16 ; [L441] _Bool tmp___17 ; [L442] int8_t tmp___18 ; [L443] int8_t tmp___19 ; [L444] int8_t tmp___20 ; VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L447] COND FALSE !(! side1Failed) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L450] COND TRUE ! side2Failed [L451] tmp = 1 VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L456] tmp___0 = read_manual_selection_history((unsigned char)1) [L457] COND FALSE !(! tmp___0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L486] tmp___7 = read_side1_failed_history((unsigned char)1) [L487] COND TRUE \read(tmp___7) [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L488] tmp___8 = read_side2_failed_history((unsigned char)1) [L489] COND TRUE ! tmp___8 [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L490] tmp___5 = read_active_side_history((unsigned char)0) [L491] COND FALSE !(! ((int )tmp___5 == 2)) [L118] COND TRUE (int )index == 0 [L119] return (side2Failed_History_0); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L494] tmp___6 = read_side2_failed_history((unsigned char)0) [L495] COND TRUE ! tmp___6 VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L496] COND TRUE ! ((int )side2_written == 1) [L497] return (0); VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L604] c1 = check() [L616] COND TRUE ! arg VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L618] reach_error() VAL [active_side_History_0=2, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=128, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 296 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 133774.5ms, OverallIterations: 38, TraceHistogramMax: 2, EmptinessCheckTime: 96.6ms, AutomataDifference: 32674.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16851 SDtfs, 53337 SDslu, 53922 SDs, 0 SdLazy, 10223 SolverSat, 808 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6867.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10044 GetRequests, 9299 SyntacticMatches, 42 SemanticMatches, 703 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46475 ImplicationChecksByTransitivity, 12035.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4066occurred in iteration=37, InterpolantAutomatonStates: 661, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6020.0ms AutomataMinimizationTime, 37 MinimizatonAttempts, 45924 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1522.4ms SsaConstructionTime, 8097.3ms SatisfiabilityAnalysisTime, 26134.7ms InterpolantComputationTime, 4920 NumberOfCodeBlocks, 4920 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 9444 ConstructedInterpolants, 0 QuantifiedInterpolants, 32053 SizeOfPredicates, 149 NumberOfNonLiveVariables, 14989 ConjunctsInSsa, 285 ConjunctsInUnsatCore, 96 InterpolantComputations, 64 PerfectInterpolantSequences, 1002/1432 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 proved your program to be incorrect! [2021-10-13 07:18:32,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2aaf030-a019-40a7-89b9-04d2d3711e28/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...