./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh --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 8fe6fb83fb08ef54afbd8d78d8c97f9d20e73a7ae4eae7f287d2ff90296f8470 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:04:36,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:04:36,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:04:36,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:04:36,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:04:36,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:04:36,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:04:36,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:04:36,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:04:36,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:04:36,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:04:36,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:04:36,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:04:36,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:04:36,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:04:36,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:04:36,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:04:36,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:04:36,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:04:36,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:04:36,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:04:36,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:04:36,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:04:36,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:04:36,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:04:36,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:04:36,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:04:36,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:04:36,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:04:36,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:04:36,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:04:36,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:04:36,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:04:36,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:04:36,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:04:36,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:04:36,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:04:36,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:04:36,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:04:36,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:04:36,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:04:36,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:04:37,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:04:37,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:04:37,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:04:37,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:04:37,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:04:37,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:04:37,020 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:04:37,020 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:04:37,020 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:04:37,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:04:37,020 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:04:37,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:04:37,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:04:37,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:04:37,021 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:04:37,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:04:37,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:04:37,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:04:37,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:04:37,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:04:37,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:04:37,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:04:37,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:04:37,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:04:37,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:04:37,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:04:37,023 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:04:37,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:04:37,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:04:37,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:04:37,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:04:37,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:04:37,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:04:37,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:04:37,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fe6fb83fb08ef54afbd8d78d8c97f9d20e73a7ae4eae7f287d2ff90296f8470 [2022-12-14 09:04:37,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:04:37,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:04:37,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:04:37,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:04:37,240 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:04:37,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2022-12-14 09:04:39,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:04:39,997 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:04:39,998 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2022-12-14 09:04:40,005 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/data/e17e9f250/53b43dbb74e44cc39a3353cd94809beb/FLAG201183442 [2022-12-14 09:04:40,349 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/data/e17e9f250/53b43dbb74e44cc39a3353cd94809beb [2022-12-14 09:04:40,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:04:40,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:04:40,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:04:40,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:04:40,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:04:40,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ebaa6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40, skipping insertion in model container [2022-12-14 09:04:40,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:04:40,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:04:40,631 WARN L237 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_56f77dc0-bc81-4591-acba-54bc9366dcea/sv-benchmarks/c/eca-rers2012/Problem02_label06.c[21333,21346] [2022-12-14 09:04:40,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:04:40,656 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:04:40,719 WARN L237 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_56f77dc0-bc81-4591-acba-54bc9366dcea/sv-benchmarks/c/eca-rers2012/Problem02_label06.c[21333,21346] [2022-12-14 09:04:40,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:04:40,733 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:04:40,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40 WrapperNode [2022-12-14 09:04:40,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:04:40,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:04:40,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:04:40,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:04:40,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,779 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-12-14 09:04:40,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:04:40,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:04:40,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:04:40,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:04:40,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:04:40,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:04:40,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:04:40,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:04:40,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (1/1) ... [2022-12-14 09:04:40,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:04:40,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:04:40,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:04:40,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:04:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:04:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:04:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:04:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:04:40,951 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:04:40,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:04:41,618 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:04:41,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:04:41,762 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:04:41,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:04:41 BoogieIcfgContainer [2022-12-14 09:04:41,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:04:41,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:04:41,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:04:41,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:04:41,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:04:40" (1/3) ... [2022-12-14 09:04:41,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291faaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:04:41, skipping insertion in model container [2022-12-14 09:04:41,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:04:40" (2/3) ... [2022-12-14 09:04:41,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291faaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:04:41, skipping insertion in model container [2022-12-14 09:04:41,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:04:41" (3/3) ... [2022-12-14 09:04:41,770 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label06.c [2022-12-14 09:04:41,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:04:41,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:04:41,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:04:41,824 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7044d98e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:04:41,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:04:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 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) [2022-12-14 09:04:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 09:04:41,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:41,834 INFO L195 NwaCegarLoop]: 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] [2022-12-14 09:04:41,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:41,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1814586647, now seen corresponding path program 1 times [2022-12-14 09:04:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:41,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103743718] [2022-12-14 09:04:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:41,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:42,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:42,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103743718] [2022-12-14 09:04:42,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103743718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:42,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:42,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:04:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096550545] [2022-12-14 09:04:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:42,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:42,256 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 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) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 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) [2022-12-14 09:04:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:42,601 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-12-14 09:04:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:42,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 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 [2022-12-14 09:04:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:42,613 INFO L225 Difference]: With dead ends: 251 [2022-12-14 09:04:42,613 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 09:04:42,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:42,618 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:42,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:04:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 09:04:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-12-14 09:04:42,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2022-12-14 09:04:42,653 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2022-12-14 09:04:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:42,653 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2022-12-14 09:04:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 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) [2022-12-14 09:04:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2022-12-14 09:04:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 09:04:42,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:42,655 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 09:04:42,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:04:42,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -483694278, now seen corresponding path program 1 times [2022-12-14 09:04:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137967457] [2022-12-14 09:04:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:42,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:42,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:42,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137967457] [2022-12-14 09:04:42,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137967457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:42,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:42,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:04:42,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409094046] [2022-12-14 09:04:42,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:42,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:04:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:42,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:04:42,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:04:42,915 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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) [2022-12-14 09:04:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:43,629 INFO L93 Difference]: Finished difference Result 725 states and 1163 transitions. [2022-12-14 09:04:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:04:43,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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 [2022-12-14 09:04:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:43,633 INFO L225 Difference]: With dead ends: 725 [2022-12-14 09:04:43,634 INFO L226 Difference]: Without dead ends: 563 [2022-12-14 09:04:43,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:04:43,636 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 386 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:43,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 23 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 09:04:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-12-14 09:04:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2022-12-14 09:04:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4481327800829875) internal successors, (698), 482 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) [2022-12-14 09:04:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 698 transitions. [2022-12-14 09:04:43,664 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 698 transitions. Word has length 85 [2022-12-14 09:04:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:43,664 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 698 transitions. [2022-12-14 09:04:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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) [2022-12-14 09:04:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 698 transitions. [2022-12-14 09:04:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 09:04:43,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:43,669 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 09:04:43,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:04:43,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash -329011223, now seen corresponding path program 1 times [2022-12-14 09:04:43,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:43,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11947027] [2022-12-14 09:04:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:43,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11947027] [2022-12-14 09:04:43,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11947027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:43,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:43,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:04:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128232895] [2022-12-14 09:04:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:43,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:43,774 INFO L87 Difference]: Start difference. First operand 483 states and 698 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:43,980 INFO L93 Difference]: Finished difference Result 1445 states and 2091 transitions. [2022-12-14 09:04:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:43,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-12-14 09:04:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:43,983 INFO L225 Difference]: With dead ends: 1445 [2022-12-14 09:04:43,983 INFO L226 Difference]: Without dead ends: 963 [2022-12-14 09:04:43,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:43,986 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:43,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 20 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:04:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-12-14 09:04:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 883. [2022-12-14 09:04:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.3639455782312926) internal successors, (1203), 882 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1203 transitions. [2022-12-14 09:04:44,010 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1203 transitions. Word has length 91 [2022-12-14 09:04:44,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:44,010 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1203 transitions. [2022-12-14 09:04:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1203 transitions. [2022-12-14 09:04:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-14 09:04:44,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:44,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 09:04:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:04:44,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash -985379421, now seen corresponding path program 1 times [2022-12-14 09:04:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:44,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927875989] [2022-12-14 09:04:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:44,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:44,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927875989] [2022-12-14 09:04:44,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927875989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:04:44,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758256198] [2022-12-14 09:04:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:44,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:04:44,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:04:44,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:04:44,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:04:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:44,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:04:44,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:04:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 09:04:44,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:04:44,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758256198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:44,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:04:44,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 09:04:44,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128716657] [2022-12-14 09:04:44,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:44,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:44,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:44,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:44,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:04:44,436 INFO L87 Difference]: Start difference. First operand 883 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:44,742 INFO L93 Difference]: Finished difference Result 2165 states and 3041 transitions. [2022-12-14 09:04:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:44,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2022-12-14 09:04:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:44,749 INFO L225 Difference]: With dead ends: 2165 [2022-12-14 09:04:44,749 INFO L226 Difference]: Without dead ends: 1283 [2022-12-14 09:04:44,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:04:44,751 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:44,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 152 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:04:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-12-14 09:04:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2022-12-14 09:04:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.316971713810316) internal successors, (1583), 1202 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1583 transitions. [2022-12-14 09:04:44,769 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1583 transitions. Word has length 107 [2022-12-14 09:04:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:44,769 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1583 transitions. [2022-12-14 09:04:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1583 transitions. [2022-12-14 09:04:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 09:04:44,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:44,771 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 09:04:44,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:04:44,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:04:44,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 793810871, now seen corresponding path program 1 times [2022-12-14 09:04:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298286260] [2022-12-14 09:04:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:45,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:45,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298286260] [2022-12-14 09:04:45,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298286260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:45,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:45,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:04:45,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64246352] [2022-12-14 09:04:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:45,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:45,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:45,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:45,071 INFO L87 Difference]: Start difference. First operand 1203 states and 1583 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:45,339 INFO L93 Difference]: Finished difference Result 2885 states and 3921 transitions. [2022-12-14 09:04:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:45,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-12-14 09:04:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:45,346 INFO L225 Difference]: With dead ends: 2885 [2022-12-14 09:04:45,346 INFO L226 Difference]: Without dead ends: 1683 [2022-12-14 09:04:45,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:45,348 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 66 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:45,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 144 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:04:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-12-14 09:04:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1523. [2022-12-14 09:04:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.3226018396846255) internal successors, (2013), 1522 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2013 transitions. [2022-12-14 09:04:45,373 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2013 transitions. Word has length 115 [2022-12-14 09:04:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:45,374 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2013 transitions. [2022-12-14 09:04:45,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:45,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2013 transitions. [2022-12-14 09:04:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-14 09:04:45,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:45,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-12-14 09:04:45,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:04:45,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:45,377 INFO L85 PathProgramCache]: Analyzing trace with hash -387655936, now seen corresponding path program 1 times [2022-12-14 09:04:45,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:45,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033658363] [2022-12-14 09:04:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:45,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 09:04:45,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:45,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033658363] [2022-12-14 09:04:45,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033658363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:45,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:45,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:04:45,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412793320] [2022-12-14 09:04:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:45,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:45,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:45,478 INFO L87 Difference]: Start difference. First operand 1523 states and 2013 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:45,711 INFO L93 Difference]: Finished difference Result 3445 states and 4660 transitions. [2022-12-14 09:04:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 153 [2022-12-14 09:04:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:45,717 INFO L225 Difference]: With dead ends: 3445 [2022-12-14 09:04:45,717 INFO L226 Difference]: Without dead ends: 1843 [2022-12-14 09:04:45,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:45,720 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:45,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 28 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:04:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-12-14 09:04:45,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1763. [2022-12-14 09:04:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.3314415437003406) internal successors, (2346), 1762 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2346 transitions. [2022-12-14 09:04:45,757 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2346 transitions. Word has length 153 [2022-12-14 09:04:45,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:45,758 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2346 transitions. [2022-12-14 09:04:45,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2346 transitions. [2022-12-14 09:04:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-14 09:04:45,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:45,762 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:04:45,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 09:04:45,763 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:45,763 INFO L85 PathProgramCache]: Analyzing trace with hash -126925409, now seen corresponding path program 1 times [2022-12-14 09:04:45,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:45,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984275806] [2022-12-14 09:04:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 09:04:45,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:45,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984275806] [2022-12-14 09:04:45,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984275806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:45,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:45,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:04:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166139646] [2022-12-14 09:04:45,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:45,858 INFO L87 Difference]: Start difference. First operand 1763 states and 2346 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:46,134 INFO L93 Difference]: Finished difference Result 4085 states and 5428 transitions. [2022-12-14 09:04:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:46,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 171 [2022-12-14 09:04:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:46,138 INFO L225 Difference]: With dead ends: 4085 [2022-12-14 09:04:46,138 INFO L226 Difference]: Without dead ends: 1763 [2022-12-14 09:04:46,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:46,140 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:46,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 150 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:04:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-12-14 09:04:46,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2022-12-14 09:04:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.2616345062429057) internal successors, (2223), 1762 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2223 transitions. [2022-12-14 09:04:46,162 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2223 transitions. Word has length 171 [2022-12-14 09:04:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:46,163 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2223 transitions. [2022-12-14 09:04:46,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2223 transitions. [2022-12-14 09:04:46,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-14 09:04:46,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:46,165 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 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, 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] [2022-12-14 09:04:46,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:04:46,166 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1027400499, now seen corresponding path program 1 times [2022-12-14 09:04:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:46,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184512215] [2022-12-14 09:04:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:46,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-14 09:04:46,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:46,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184512215] [2022-12-14 09:04:46,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184512215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:46,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:46,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:04:46,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016190318] [2022-12-14 09:04:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:46,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:46,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:46,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:46,283 INFO L87 Difference]: Start difference. First operand 1763 states and 2223 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2022-12-14 09:04:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:46,551 INFO L93 Difference]: Finished difference Result 4085 states and 5166 transitions. [2022-12-14 09:04:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:46,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 172 [2022-12-14 09:04:46,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:46,555 INFO L225 Difference]: With dead ends: 4085 [2022-12-14 09:04:46,556 INFO L226 Difference]: Without dead ends: 2243 [2022-12-14 09:04:46,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:46,557 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:46,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 137 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:04:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2022-12-14 09:04:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2243. [2022-12-14 09:04:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2242 states have (on average 1.2181088314005353) internal successors, (2731), 2242 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2731 transitions. [2022-12-14 09:04:46,583 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2731 transitions. Word has length 172 [2022-12-14 09:04:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:46,583 INFO L495 AbstractCegarLoop]: Abstraction has 2243 states and 2731 transitions. [2022-12-14 09:04:46,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2022-12-14 09:04:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2731 transitions. [2022-12-14 09:04:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-14 09:04:46,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:46,587 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-12-14 09:04:46,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:04:46,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash -18637207, now seen corresponding path program 1 times [2022-12-14 09:04:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:46,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42901684] [2022-12-14 09:04:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:46,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 52 proven. 7 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-14 09:04:46,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:46,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42901684] [2022-12-14 09:04:46,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42901684] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:04:46,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123622415] [2022-12-14 09:04:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:46,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:04:46,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:04:46,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:04:46,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:04:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:46,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:04:46,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:04:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 09:04:46,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:04:46,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123622415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:46,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:04:46,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 09:04:46,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802796835] [2022-12-14 09:04:46,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:46,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:46,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:04:46,908 INFO L87 Difference]: Start difference. First operand 2243 states and 2731 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 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) [2022-12-14 09:04:47,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:47,034 INFO L93 Difference]: Finished difference Result 4245 states and 5134 transitions. [2022-12-14 09:04:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:47,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 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 180 [2022-12-14 09:04:47,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:47,040 INFO L225 Difference]: With dead ends: 4245 [2022-12-14 09:04:47,040 INFO L226 Difference]: Without dead ends: 1923 [2022-12-14 09:04:47,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:04:47,048 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 4 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:04:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-12-14 09:04:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1363. [2022-12-14 09:04:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.1732745961820852) internal successors, (1598), 1362 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1598 transitions. [2022-12-14 09:04:47,066 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1598 transitions. Word has length 180 [2022-12-14 09:04:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:47,066 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1598 transitions. [2022-12-14 09:04:47,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 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) [2022-12-14 09:04:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1598 transitions. [2022-12-14 09:04:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-14 09:04:47,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:47,069 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 09:04:47,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:04:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 09:04:47,270 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -687024265, now seen corresponding path program 1 times [2022-12-14 09:04:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:47,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473313369] [2022-12-14 09:04:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 09:04:47,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473313369] [2022-12-14 09:04:47,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473313369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:04:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419808409] [2022-12-14 09:04:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:47,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:04:47,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:04:47,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:04:47,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:04:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:47,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:04:47,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:04:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-14 09:04:47,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:04:47,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419808409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:47,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:04:47,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 09:04:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687543590] [2022-12-14 09:04:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:47,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:04:47,510 INFO L87 Difference]: Start difference. First operand 1363 states and 1598 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:47,669 INFO L93 Difference]: Finished difference Result 2325 states and 2727 transitions. [2022-12-14 09:04:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 189 [2022-12-14 09:04:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:47,671 INFO L225 Difference]: With dead ends: 2325 [2022-12-14 09:04:47,671 INFO L226 Difference]: Without dead ends: 1283 [2022-12-14 09:04:47,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:04:47,672 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 63 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:47,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 45 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:04:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-12-14 09:04:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2022-12-14 09:04:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.139767054908486) internal successors, (1370), 1202 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1370 transitions. [2022-12-14 09:04:47,686 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1370 transitions. Word has length 189 [2022-12-14 09:04:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:47,686 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1370 transitions. [2022-12-14 09:04:47,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1370 transitions. [2022-12-14 09:04:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-14 09:04:47,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:47,688 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 09:04:47,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:04:47,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 09:04:47,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:47,890 INFO L85 PathProgramCache]: Analyzing trace with hash -659089124, now seen corresponding path program 1 times [2022-12-14 09:04:47,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:47,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798413199] [2022-12-14 09:04:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:47,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-14 09:04:48,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:48,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798413199] [2022-12-14 09:04:48,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798413199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:48,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:48,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:04:48,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041420501] [2022-12-14 09:04:48,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:48,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:48,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:48,041 INFO L87 Difference]: Start difference. First operand 1203 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:48,187 INFO L93 Difference]: Finished difference Result 2085 states and 2384 transitions. [2022-12-14 09:04:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 196 [2022-12-14 09:04:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:48,192 INFO L225 Difference]: With dead ends: 2085 [2022-12-14 09:04:48,192 INFO L226 Difference]: Without dead ends: 1123 [2022-12-14 09:04:48,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:48,193 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:48,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 11 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:04:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-12-14 09:04:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-12-14 09:04:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1354723707664884) internal successors, (1274), 1122 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1274 transitions. [2022-12-14 09:04:48,206 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1274 transitions. Word has length 196 [2022-12-14 09:04:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:48,206 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1274 transitions. [2022-12-14 09:04:48,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1274 transitions. [2022-12-14 09:04:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-12-14 09:04:48,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:48,208 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-12-14 09:04:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 09:04:48,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1335204306, now seen corresponding path program 1 times [2022-12-14 09:04:48,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:48,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066144206] [2022-12-14 09:04:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 09:04:48,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066144206] [2022-12-14 09:04:48,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066144206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:48,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:48,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:04:48,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134319034] [2022-12-14 09:04:48,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:48,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:48,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:48,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:48,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:48,289 INFO L87 Difference]: Start difference. First operand 1123 states and 1274 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:48,455 INFO L93 Difference]: Finished difference Result 2405 states and 2763 transitions. [2022-12-14 09:04:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:48,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 206 [2022-12-14 09:04:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:48,457 INFO L225 Difference]: With dead ends: 2405 [2022-12-14 09:04:48,457 INFO L226 Difference]: Without dead ends: 1363 [2022-12-14 09:04:48,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:48,458 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 64 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:48,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 100 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:04:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-12-14 09:04:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1203. [2022-12-14 09:04:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1339434276206324) internal successors, (1363), 1202 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1363 transitions. [2022-12-14 09:04:48,472 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1363 transitions. Word has length 206 [2022-12-14 09:04:48,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:48,472 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1363 transitions. [2022-12-14 09:04:48,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1363 transitions. [2022-12-14 09:04:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-12-14 09:04:48,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:48,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 09:04:48,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 09:04:48,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:48,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash 626265463, now seen corresponding path program 1 times [2022-12-14 09:04:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:48,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617123343] [2022-12-14 09:04:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:48,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:48,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617123343] [2022-12-14 09:04:48,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617123343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:48,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:48,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:04:48,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110377629] [2022-12-14 09:04:48,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:48,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:04:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:04:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:04:48,659 INFO L87 Difference]: Start difference. First operand 1203 states and 1363 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:48,896 INFO L93 Difference]: Finished difference Result 2245 states and 2555 transitions. [2022-12-14 09:04:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:04:48,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2022-12-14 09:04:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:48,898 INFO L225 Difference]: With dead ends: 2245 [2022-12-14 09:04:48,898 INFO L226 Difference]: Without dead ends: 1203 [2022-12-14 09:04:48,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:04:48,899 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 73 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:48,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 143 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:04:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-12-14 09:04:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2022-12-14 09:04:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1306156405990018) internal successors, (1359), 1202 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1359 transitions. [2022-12-14 09:04:48,912 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1359 transitions. Word has length 229 [2022-12-14 09:04:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:48,912 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1359 transitions. [2022-12-14 09:04:48,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1359 transitions. [2022-12-14 09:04:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-12-14 09:04:48,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:48,914 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:04:48,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 09:04:48,914 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:48,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:48,914 INFO L85 PathProgramCache]: Analyzing trace with hash 559970142, now seen corresponding path program 1 times [2022-12-14 09:04:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:48,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986244531] [2022-12-14 09:04:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:48,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-14 09:04:49,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:49,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986244531] [2022-12-14 09:04:49,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986244531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:49,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:04:49,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:04:49,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655523962] [2022-12-14 09:04:49,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:49,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:04:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:04:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:49,015 INFO L87 Difference]: Start difference. First operand 1203 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:49,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:49,155 INFO L93 Difference]: Finished difference Result 2405 states and 2730 transitions. [2022-12-14 09:04:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:04:49,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 245 [2022-12-14 09:04:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:49,157 INFO L225 Difference]: With dead ends: 2405 [2022-12-14 09:04:49,157 INFO L226 Difference]: Without dead ends: 1043 [2022-12-14 09:04:49,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:04:49,158 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:49,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 113 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:04:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-12-14 09:04:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-12-14 09:04:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.0700575815738964) internal successors, (1115), 1042 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1115 transitions. [2022-12-14 09:04:49,168 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1115 transitions. Word has length 245 [2022-12-14 09:04:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:49,169 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1115 transitions. [2022-12-14 09:04:49,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1115 transitions. [2022-12-14 09:04:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-12-14 09:04:49,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:49,170 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:04:49,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 09:04:49,171 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:04:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash 34401679, now seen corresponding path program 1 times [2022-12-14 09:04:49,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:49,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318626118] [2022-12-14 09:04:49,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 337 proven. 15 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 09:04:49,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318626118] [2022-12-14 09:04:49,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318626118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:04:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707311257] [2022-12-14 09:04:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:04:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:04:49,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:04:49,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:04:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:49,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 09:04:49,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:04:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 383 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:50,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:04:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 259 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-14 09:04:51,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707311257] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:04:51,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [703433763] [2022-12-14 09:04:51,854 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-12-14 09:04:51,855 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:04:51,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:04:51,864 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:04:51,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:05:53,778 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2022-12-14 09:05:53,994 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 11136 conjuctions. This might take some time... [2022-12-14 09:05:54,131 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 80 conjuctions. [2022-12-14 09:05:54,134 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2022-12-14 09:05:54,339 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 11136 conjuctions. This might take some time... [2022-12-14 09:05:54,474 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 80 conjuctions. [2022-12-14 09:05:54,517 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2022-12-14 09:05:54,716 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 11136 conjuctions. This might take some time... [2022-12-14 09:05:54,848 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 80 conjuctions. [2022-12-14 09:05:55,006 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:06:07,713 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56501#(and (<= 26 ~z~0) (<= 5 ~e~0) (<= 25 ~y~0) (<= ~c~0 3) (<= ~e~0 5) (<= 6 ~f~0) (<= 0 |#NULL.base|) (<= ~w~0 23) (<= ~u~0 21) (<= 1 |ULTIMATE.start_calculate_output_~input#1|) (<= ~x~0 24) (<= 3 ~c~0) (<= |#NULL.offset| 0) (<= ~v~0 22) (<= 1 |ULTIMATE.start_main_~input~0#1|) (= ~a11~0 1) (<= ~a~0 1) (<= 4 ~d~0) (<= 23 ~w~0) (= ~a28~0 10) (<= ~z~0 26) (= ~a21~0 1) (<= 21 ~u~0) (<= 1 |ULTIMATE.start_calculate_output_#in~input#1|) (= 7 ~a17~0) (<= |#NULL.base| 0) (<= ~y~0 25) (= ~a19~0 1) (<= 1 ~a~0) (<= 22 ~v~0) (<= 0 |#NULL.offset|) (<= ~d~0 4) (<= 0 |#StackHeapBarrier|) (<= ~a25~0 0) (<= ~f~0 6) (<= 0 ~a25~0) (<= 24 ~x~0))' at error location [2022-12-14 09:06:07,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:06:07,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:06:07,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 12 [2022-12-14 09:06:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554786302] [2022-12-14 09:06:07,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:06:07,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 09:06:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 09:06:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-12-14 09:06:07,715 INFO L87 Difference]: Start difference. First operand 1043 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 48.166666666666664) internal successors, (578), 12 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:06:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:08,647 INFO L93 Difference]: Finished difference Result 1686 states and 1791 transitions. [2022-12-14 09:06:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 09:06:08,647 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 48.166666666666664) internal successors, (578), 12 states have internal predecessors, (578), 0 states have call successors, (0), 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 279 [2022-12-14 09:06:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:08,648 INFO L225 Difference]: With dead ends: 1686 [2022-12-14 09:06:08,648 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:06:08,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 598 SyntacticMatches, 227 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3659 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-12-14 09:06:08,649 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 559 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:08,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 55 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 09:06:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:06:08,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:06:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:06:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:06:08,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 279 [2022-12-14 09:06:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:08,650 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:06:08,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.166666666666664) internal successors, (578), 12 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:06:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:06:08,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:06:08,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:06:08,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:06:08,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:06:08,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-12-14 09:06:09,729 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-12-14 09:06:09,730 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 602) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L598-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L602(line 602) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-12-14 09:06:09,731 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-12-14 09:06:09,732 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (= ~a11~0 0)) (.cse4 (<= ~a17~0 8)) (.cse1 (= ~a19~0 1))) (let ((.cse12 (or (and (not (= 7 ~a17~0)) .cse4 .cse1) (and .cse2 .cse4 .cse1))) (.cse6 (<= ~a25~0 0)) (.cse0 (<= ~a17~0 7)) (.cse9 (<= 10 ~a28~0)) (.cse13 (= ~a17~0 8)) (.cse3 (= ~a21~0 1)) (.cse14 (not (= ~a11~0 1))) (.cse7 (<= ~a19~0 0)) (.cse10 (<= 9 ~a28~0)) (.cse11 (<= ~a28~0 10)) (.cse8 (= ~a25~0 1)) (.cse5 (<= ~a28~0 7))) (or (and (<= 11 ~a28~0) .cse0 .cse1) (and .cse0 .cse2 .cse1) (and .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0) (and .cse9 .cse10 .cse11 .cse12 .cse6) (and .cse13 .cse10 .cse3 .cse11 .cse12 .cse6) (and .cse8 .cse4 .cse1 .cse5) (and .cse0 .cse7) (and .cse8 .cse3 .cse4 .cse1 .cse14) (and .cse13 (= ~a25~0 ~a11~0) .cse3 .cse2 .cse1 .cse5) (and .cse9 .cse13 .cse8 .cse3 .cse11 .cse14 .cse7) (and .cse3 .cse4 (= ~a28~0 8) .cse14 (= ~a25~0 0) .cse7) (and .cse10 .cse8 .cse4 .cse11 .cse1) (and .cse8 .cse2 .cse1 .cse5)))) [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L895 garLoopResultBuilder]: At program point calculate_output_returnLabel#1(lines 39 608) the Hoare annotation is: (let ((.cse2 (= ~a11~0 0)) (.cse4 (<= ~a17~0 8)) (.cse1 (= ~a19~0 1))) (let ((.cse12 (or (and (not (= 7 ~a17~0)) .cse4 .cse1) (and .cse2 .cse4 .cse1))) (.cse6 (<= ~a25~0 0)) (.cse0 (<= ~a17~0 7)) (.cse9 (<= 10 ~a28~0)) (.cse13 (= ~a17~0 8)) (.cse3 (= ~a21~0 1)) (.cse14 (not (= ~a11~0 1))) (.cse7 (<= ~a19~0 0)) (.cse10 (<= 9 ~a28~0)) (.cse11 (<= ~a28~0 10)) (.cse8 (= ~a25~0 1)) (.cse5 (<= ~a28~0 7))) (or (and (<= 11 ~a28~0) .cse0 .cse1) (and .cse0 .cse2 .cse1) (and .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0) (and .cse9 .cse10 .cse11 .cse12 .cse6) (and .cse13 .cse10 .cse3 .cse11 .cse12 .cse6) (and .cse8 .cse4 .cse1 .cse5) (and .cse0 .cse7) (and .cse8 .cse3 .cse4 .cse1 .cse14) (and .cse13 (= ~a25~0 ~a11~0) .cse3 .cse2 .cse1 .cse5) (and .cse9 .cse13 .cse8 .cse3 .cse11 .cse14 .cse7) (and .cse3 .cse4 (= ~a28~0 8) .cse14 (= ~a25~0 0) .cse7) (and .cse10 .cse8 .cse4 .cse11 .cse1) (and .cse8 .cse2 .cse1 .cse5)))) [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-12-14 09:06:09,733 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-12-14 09:06:09,734 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-12-14 09:06:09,736 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:09,737 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:06:09,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:06:09 BoogieIcfgContainer [2022-12-14 09:06:09,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:06:09,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:06:09,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:06:09,750 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:06:09,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:04:41" (3/4) ... [2022-12-14 09:06:09,753 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:06:09,764 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2022-12-14 09:06:09,764 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-14 09:06:09,765 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 09:06:09,765 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 09:06:09,818 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:06:09,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:06:09,819 INFO L158 Benchmark]: Toolchain (without parser) took 89466.78ms. Allocated memory was 130.0MB in the beginning and 474.0MB in the end (delta: 343.9MB). Free memory was 94.8MB in the beginning and 232.7MB in the end (delta: -137.9MB). Peak memory consumption was 206.8MB. Max. memory is 16.1GB. [2022-12-14 09:06:09,819 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:06:09,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.54ms. Allocated memory is still 130.0MB. Free memory was 94.8MB in the beginning and 68.5MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-14 09:06:09,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.44ms. Allocated memory is still 130.0MB. Free memory was 68.5MB in the beginning and 63.0MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 09:06:09,819 INFO L158 Benchmark]: Boogie Preprocessor took 48.99ms. Allocated memory is still 130.0MB. Free memory was 63.0MB in the beginning and 99.2MB in the end (delta: -36.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-12-14 09:06:09,820 INFO L158 Benchmark]: RCFGBuilder took 934.66ms. Allocated memory is still 130.0MB. Free memory was 99.2MB in the beginning and 63.7MB in the end (delta: 35.4MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2022-12-14 09:06:09,820 INFO L158 Benchmark]: TraceAbstraction took 87984.08ms. Allocated memory was 130.0MB in the beginning and 474.0MB in the end (delta: 343.9MB). Free memory was 63.0MB in the beginning and 243.2MB in the end (delta: -180.2MB). Peak memory consumption was 162.4MB. Max. memory is 16.1GB. [2022-12-14 09:06:09,820 INFO L158 Benchmark]: Witness Printer took 68.47ms. Allocated memory is still 474.0MB. Free memory was 243.2MB in the beginning and 232.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 09:06:09,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.54ms. Allocated memory is still 130.0MB. Free memory was 94.8MB in the beginning and 68.5MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.44ms. Allocated memory is still 130.0MB. Free memory was 68.5MB in the beginning and 63.0MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.99ms. Allocated memory is still 130.0MB. Free memory was 63.0MB in the beginning and 99.2MB in the end (delta: -36.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * RCFGBuilder took 934.66ms. Allocated memory is still 130.0MB. Free memory was 99.2MB in the beginning and 63.7MB in the end (delta: 35.4MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. * TraceAbstraction took 87984.08ms. Allocated memory was 130.0MB in the beginning and 474.0MB in the end (delta: 343.9MB). Free memory was 63.0MB in the beginning and 243.2MB in the end (delta: -180.2MB). Peak memory consumption was 162.4MB. Max. memory is 16.1GB. * Witness Printer took 68.47ms. Allocated memory is still 474.0MB. Free memory was 243.2MB in the beginning and 232.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 602]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.9s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1696 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1696 mSDsluCounter, 1190 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 911 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5325 IncrementalHoareTripleChecker+Invalid, 6236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 911 mSolverCounterUnsat, 1052 mSDtfsCounter, 5325 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1372 GetRequests, 1090 SyntacticMatches, 227 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3664 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2243occurred in iteration=8, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 1280 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 491 HoareAnnotationTreeSize, 3 FomulaSimplifications, 516 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1508 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 3253 NumberOfCodeBlocks, 3253 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3512 ConstructedInterpolants, 0 QuantifiedInterpolants, 13273 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1681 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 3165/3290 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((11 <= a28 && a17 <= 7) && a19 == 1) || ((a17 <= 7 && a11 == 0) && a19 == 1)) || ((((a21 == 1 && a17 <= 8) && a28 <= 7) && a25 <= 0) && a19 <= 0)) || (a25 == 1 && a17 <= 7)) || ((((10 <= a28 && 9 <= a28) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((a25 == 1 && a17 <= 8) && a19 == 1) && a28 <= 7)) || (a17 <= 7 && a19 <= 0)) || ((((a25 == 1 && a21 == 1) && a17 <= 8) && a19 == 1) && !(a11 == 1))) || (((((a17 == 8 && a25 == a11) && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || ((((((10 <= a28 && a17 == 8) && a25 == 1) && a21 == 1) && a28 <= 10) && !(a11 == 1)) && a19 <= 0)) || (((((a21 == 1 && a17 <= 8) && a28 == 8) && !(a11 == 1)) && a25 == 0) && a19 <= 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((((11 <= a28 && a17 <= 7) && a19 == 1) || ((a17 <= 7 && a11 == 0) && a19 == 1)) || ((((a21 == 1 && a17 <= 8) && a28 <= 7) && a25 <= 0) && a19 <= 0)) || (a25 == 1 && a17 <= 7)) || ((((10 <= a28 && 9 <= a28) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((a25 == 1 && a17 <= 8) && a19 == 1) && a28 <= 7)) || (a17 <= 7 && a19 <= 0)) || ((((a25 == 1 && a21 == 1) && a17 <= 8) && a19 == 1) && !(a11 == 1))) || (((((a17 == 8 && a25 == a11) && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || ((((((10 <= a28 && a17 == 8) && a25 == 1) && a21 == 1) && a28 <= 10) && !(a11 == 1)) && a19 <= 0)) || (((((a21 == 1 && a17 <= 8) && a28 == 8) && !(a11 == 1)) && a25 == 0) && a19 <= 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 09:06:09,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f77dc0-bc81-4591-acba-54bc9366dcea/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE