./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur --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 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de --- 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-38b53e6 [2022-11-25 23:36:16,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:36:16,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:36:16,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:36:16,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:36:16,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:36:16,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:36:16,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:36:16,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:36:16,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:36:16,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:36:16,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:36:16,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:36:16,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:36:16,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:36:16,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:36:16,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:36:16,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:36:16,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:36:16,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:36:16,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:36:16,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:36:16,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:36:16,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:36:16,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:36:16,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:36:16,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:36:17,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:36:17,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:36:17,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:36:17,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:36:17,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:36:17,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:36:17,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:36:17,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:36:17,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:36:17,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:36:17,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:36:17,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:36:17,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:36:17,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:36:17,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:36:17,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:36:17,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:36:17,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:36:17,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:36:17,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:36:17,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:36:17,065 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:36:17,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:36:17,066 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:36:17,066 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:36:17,067 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:36:17,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:36:17,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:36:17,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:36:17,068 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:36:17,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:36:17,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:36:17,069 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:36:17,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:36:17,071 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:36:17,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:36:17,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:36:17,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:36:17,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:36:17,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:36:17,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:36:17,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:36:17,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:36:17,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:36:17,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:36:17,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:36:17,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:36:17,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:36:17,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:36:17,076 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:36:17,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:36:17,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:36:17,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:36:17,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:36:17,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:36:17,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:36:17,078 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de [2022-11-25 23:36:17,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:36:17,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:36:17,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:36:17,515 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:36:17,516 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:36:17,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-25 23:36:21,025 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:36:21,444 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:36:21,445 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-25 23:36:21,467 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/data/48ac28e98/a2d68e59ee4c4df0809c13e2a590a572/FLAGd3c181bd0 [2022-11-25 23:36:21,486 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/data/48ac28e98/a2d68e59ee4c4df0809c13e2a590a572 [2022-11-25 23:36:21,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:36:21,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:36:21,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:36:21,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:36:21,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:36:21,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:36:21" (1/1) ... [2022-11-25 23:36:21,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ccdbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:21, skipping insertion in model container [2022-11-25 23:36:21,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:36:21" (1/1) ... [2022-11-25 23:36:21,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:36:21,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:36:21,924 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-11-25 23:36:21,972 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-11-25 23:36:21,989 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-11-25 23:36:21,998 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-11-25 23:36:22,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:36:22,205 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:36:22,277 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-11-25 23:36:22,349 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-11-25 23:36:22,359 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-11-25 23:36:22,366 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_ae5dffca-e37f-4cad-b177-b46275c8d36e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-11-25 23:36:22,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:36:22,573 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:36:22,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22 WrapperNode [2022-11-25 23:36:22,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:36:22,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:36:22,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:36:22,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:36:22,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,725 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2415 [2022-11-25 23:36:22,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:36:22,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:36:22,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:36:22,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:36:22,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:36:22,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:36:22,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:36:22,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:36:22,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (1/1) ... [2022-11-25 23:36:22,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:36:22,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:36:22,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:36:22,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:36:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:36:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:36:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:36:22,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:36:23,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:36:23,310 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:36:25,414 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:36:25,639 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:36:25,639 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:36:25,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:36:25 BoogieIcfgContainer [2022-11-25 23:36:25,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:36:25,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:36:25,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:36:25,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:36:25,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:36:21" (1/3) ... [2022-11-25 23:36:25,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4bb6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:36:25, skipping insertion in model container [2022-11-25 23:36:25,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:36:22" (2/3) ... [2022-11-25 23:36:25,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4bb6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:36:25, skipping insertion in model container [2022-11-25 23:36:25,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:36:25" (3/3) ... [2022-11-25 23:36:25,663 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-25 23:36:25,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:36:25,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 23:36:25,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:36:25,770 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;@31e05d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:36:25,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 23:36:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 421 states have (on average 1.8598574821852731) internal successors, (783), 425 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 23:36:25,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:25,798 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] [2022-11-25 23:36:25,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash 34120099, now seen corresponding path program 1 times [2022-11-25 23:36:25,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:25,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651872522] [2022-11-25 23:36:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:25,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:26,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651872522] [2022-11-25 23:36:26,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651872522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:26,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:26,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:36:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082649689] [2022-11-25 23:36:26,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:26,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:36:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:26,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:36:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:36:26,515 INFO L87 Difference]: Start difference. First operand has 426 states, 421 states have (on average 1.8598574821852731) internal successors, (783), 425 states have internal predecessors, (783), 0 states have call successors, (0), 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 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:27,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:27,375 INFO L93 Difference]: Finished difference Result 712 states and 1257 transitions. [2022-11-25 23:36:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:36:27,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-25 23:36:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:27,406 INFO L225 Difference]: With dead ends: 712 [2022-11-25 23:36:27,406 INFO L226 Difference]: Without dead ends: 449 [2022-11-25 23:36:27,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:36:27,425 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 2125 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:27,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 551 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:36:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-25 23:36:27,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2022-11-25 23:36:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 439 states have (on average 1.3143507972665147) internal successors, (577), 442 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 577 transitions. [2022-11-25 23:36:27,549 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 577 transitions. Word has length 49 [2022-11-25 23:36:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:27,550 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 577 transitions. [2022-11-25 23:36:27,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 577 transitions. [2022-11-25 23:36:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 23:36:27,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:27,561 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] [2022-11-25 23:36:27,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:36:27,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:27,564 INFO L85 PathProgramCache]: Analyzing trace with hash 758566708, now seen corresponding path program 1 times [2022-11-25 23:36:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:27,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717840114] [2022-11-25 23:36:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:27,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:27,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:27,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717840114] [2022-11-25 23:36:27,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717840114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:27,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:27,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:36:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608692525] [2022-11-25 23:36:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:27,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:36:27,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:27,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:36:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:36:27,794 INFO L87 Difference]: Start difference. First operand 443 states and 577 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:27,930 INFO L93 Difference]: Finished difference Result 724 states and 978 transitions. [2022-11-25 23:36:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:36:27,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-25 23:36:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:27,934 INFO L225 Difference]: With dead ends: 724 [2022-11-25 23:36:27,935 INFO L226 Difference]: Without dead ends: 566 [2022-11-25 23:36:27,937 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 [2022-11-25 23:36:27,942 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 279 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:27,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:36:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-25 23:36:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 560. [2022-11-25 23:36:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 556 states have (on average 1.3435251798561152) internal successors, (747), 559 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 747 transitions. [2022-11-25 23:36:28,005 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 747 transitions. Word has length 49 [2022-11-25 23:36:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:28,006 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 747 transitions. [2022-11-25 23:36:28,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 747 transitions. [2022-11-25 23:36:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 23:36:28,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:28,009 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] [2022-11-25 23:36:28,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:36:28,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:28,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1943064238, now seen corresponding path program 1 times [2022-11-25 23:36:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:28,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761155351] [2022-11-25 23:36:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:28,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:28,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:28,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761155351] [2022-11-25 23:36:28,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761155351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:28,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:28,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:36:28,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250674601] [2022-11-25 23:36:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:36:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:36:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:36:28,148 INFO L87 Difference]: Start difference. First operand 560 states and 747 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:28,332 INFO L93 Difference]: Finished difference Result 1072 states and 1473 transitions. [2022-11-25 23:36:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:36:28,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-25 23:36:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:28,337 INFO L225 Difference]: With dead ends: 1072 [2022-11-25 23:36:28,338 INFO L226 Difference]: Without dead ends: 810 [2022-11-25 23:36:28,339 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 [2022-11-25 23:36:28,342 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 236 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:28,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 786 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:36:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-11-25 23:36:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 803. [2022-11-25 23:36:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 799 states have (on average 1.360450563204005) internal successors, (1087), 802 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1087 transitions. [2022-11-25 23:36:28,441 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1087 transitions. Word has length 49 [2022-11-25 23:36:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:28,442 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1087 transitions. [2022-11-25 23:36:28,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1087 transitions. [2022-11-25 23:36:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 23:36:28,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:28,445 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] [2022-11-25 23:36:28,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:36:28,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:28,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1798780356, now seen corresponding path program 1 times [2022-11-25 23:36:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:28,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792533505] [2022-11-25 23:36:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:28,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:28,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792533505] [2022-11-25 23:36:28,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792533505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:28,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:28,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:36:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654513745] [2022-11-25 23:36:28,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:36:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:36:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:36:28,651 INFO L87 Difference]: Start difference. First operand 803 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:29,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:29,219 INFO L93 Difference]: Finished difference Result 1888 states and 2618 transitions. [2022-11-25 23:36:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:36:29,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-25 23:36:29,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:29,227 INFO L225 Difference]: With dead ends: 1888 [2022-11-25 23:36:29,228 INFO L226 Difference]: Without dead ends: 1180 [2022-11-25 23:36:29,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:36:29,240 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 1270 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:29,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 317 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:36:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-25 23:36:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1174. [2022-11-25 23:36:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1170 states have (on average 1.376068376068376) internal successors, (1610), 1173 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1610 transitions. [2022-11-25 23:36:29,428 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1610 transitions. Word has length 49 [2022-11-25 23:36:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:29,431 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1610 transitions. [2022-11-25 23:36:29,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1610 transitions. [2022-11-25 23:36:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 23:36:29,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:29,434 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] [2022-11-25 23:36:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:36:29,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash -108782984, now seen corresponding path program 1 times [2022-11-25 23:36:29,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:29,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620437120] [2022-11-25 23:36:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:29,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:29,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:29,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620437120] [2022-11-25 23:36:29,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620437120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:29,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:29,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:36:29,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875397256] [2022-11-25 23:36:29,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:29,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:36:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:29,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:36:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:36:29,572 INFO L87 Difference]: Start difference. First operand 1174 states and 1610 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:29,894 INFO L93 Difference]: Finished difference Result 2579 states and 3571 transitions. [2022-11-25 23:36:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:36:29,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-25 23:36:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:29,907 INFO L225 Difference]: With dead ends: 2579 [2022-11-25 23:36:29,907 INFO L226 Difference]: Without dead ends: 1742 [2022-11-25 23:36:29,909 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 [2022-11-25 23:36:29,910 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 276 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:29,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 718 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:36:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-11-25 23:36:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1736. [2022-11-25 23:36:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1732 states have (on average 1.3625866050808315) internal successors, (2360), 1735 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2360 transitions. [2022-11-25 23:36:30,218 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2360 transitions. Word has length 50 [2022-11-25 23:36:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:30,219 INFO L495 AbstractCegarLoop]: Abstraction has 1736 states and 2360 transitions. [2022-11-25 23:36:30,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2360 transitions. [2022-11-25 23:36:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 23:36:30,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:30,224 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] [2022-11-25 23:36:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:36:30,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:30,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1856759737, now seen corresponding path program 1 times [2022-11-25 23:36:30,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:30,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864353282] [2022-11-25 23:36:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:30,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864353282] [2022-11-25 23:36:30,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864353282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:30,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:30,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:36:30,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674113310] [2022-11-25 23:36:30,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:30,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:36:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:36:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:36:30,392 INFO L87 Difference]: Start difference. First operand 1736 states and 2360 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:31,263 INFO L93 Difference]: Finished difference Result 4300 states and 5916 transitions. [2022-11-25 23:36:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:36:31,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 23:36:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:31,279 INFO L225 Difference]: With dead ends: 4300 [2022-11-25 23:36:31,279 INFO L226 Difference]: Without dead ends: 2734 [2022-11-25 23:36:31,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:36:31,283 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1162 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:31,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 270 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:36:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2022-11-25 23:36:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2727. [2022-11-25 23:36:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2723 states have (on average 1.3643040763863385) internal successors, (3715), 2726 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3715 transitions. [2022-11-25 23:36:31,764 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3715 transitions. Word has length 51 [2022-11-25 23:36:31,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:31,765 INFO L495 AbstractCegarLoop]: Abstraction has 2727 states and 3715 transitions. [2022-11-25 23:36:31,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3715 transitions. [2022-11-25 23:36:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:36:31,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:31,768 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] [2022-11-25 23:36:31,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:36:31,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1124331061, now seen corresponding path program 1 times [2022-11-25 23:36:31,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:31,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984638027] [2022-11-25 23:36:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:31,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:31,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984638027] [2022-11-25 23:36:31,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984638027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:31,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:31,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:36:31,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813674544] [2022-11-25 23:36:31,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:31,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:36:31,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:36:31,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:36:31,970 INFO L87 Difference]: Start difference. First operand 2727 states and 3715 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:34,318 INFO L93 Difference]: Finished difference Result 9432 states and 13002 transitions. [2022-11-25 23:36:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:36:34,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-25 23:36:34,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:34,357 INFO L225 Difference]: With dead ends: 9432 [2022-11-25 23:36:34,357 INFO L226 Difference]: Without dead ends: 8337 [2022-11-25 23:36:34,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:36:34,362 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 2281 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:34,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 505 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:36:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2022-11-25 23:36:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 2741. [2022-11-25 23:36:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2737 states have (on average 1.3639020825721593) internal successors, (3733), 2740 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3733 transitions. [2022-11-25 23:36:34,986 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3733 transitions. Word has length 52 [2022-11-25 23:36:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:34,986 INFO L495 AbstractCegarLoop]: Abstraction has 2741 states and 3733 transitions. [2022-11-25 23:36:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3733 transitions. [2022-11-25 23:36:34,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:36:34,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:34,990 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] [2022-11-25 23:36:34,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:36:34,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:34,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1221262858, now seen corresponding path program 1 times [2022-11-25 23:36:34,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:34,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826671277] [2022-11-25 23:36:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:34,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:35,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:35,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826671277] [2022-11-25 23:36:35,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826671277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:35,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:35,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:36:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738228143] [2022-11-25 23:36:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:36:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:36:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:36:35,170 INFO L87 Difference]: Start difference. First operand 2741 states and 3733 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:38,319 INFO L93 Difference]: Finished difference Result 10576 states and 14657 transitions. [2022-11-25 23:36:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:36:38,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-25 23:36:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:38,390 INFO L225 Difference]: With dead ends: 10576 [2022-11-25 23:36:38,390 INFO L226 Difference]: Without dead ends: 9636 [2022-11-25 23:36:38,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:36:38,398 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1768 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:38,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 598 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:36:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9636 states. [2022-11-25 23:36:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9636 to 2763. [2022-11-25 23:36:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2759 states have (on average 1.3642624139180863) internal successors, (3764), 2762 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3764 transitions. [2022-11-25 23:36:39,198 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3764 transitions. Word has length 52 [2022-11-25 23:36:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:39,199 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3764 transitions. [2022-11-25 23:36:39,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3764 transitions. [2022-11-25 23:36:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:36:39,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:39,203 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] [2022-11-25 23:36:39,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:36:39,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -163415276, now seen corresponding path program 1 times [2022-11-25 23:36:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:39,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144214774] [2022-11-25 23:36:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:39,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:39,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144214774] [2022-11-25 23:36:39,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144214774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:39,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:39,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:36:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413509586] [2022-11-25 23:36:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:39,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:36:39,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:36:39,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:36:39,426 INFO L87 Difference]: Start difference. First operand 2763 states and 3764 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:42,977 INFO L93 Difference]: Finished difference Result 12555 states and 17423 transitions. [2022-11-25 23:36:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:36:42,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-25 23:36:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:43,009 INFO L225 Difference]: With dead ends: 12555 [2022-11-25 23:36:43,009 INFO L226 Difference]: Without dead ends: 11501 [2022-11-25 23:36:43,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:36:43,016 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 2593 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:43,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2593 Valid, 538 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:36:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11501 states. [2022-11-25 23:36:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11501 to 2797. [2022-11-25 23:36:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2793 states have (on average 1.363408521303258) internal successors, (3808), 2796 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3808 transitions. [2022-11-25 23:36:43,984 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3808 transitions. Word has length 52 [2022-11-25 23:36:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:43,984 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 3808 transitions. [2022-11-25 23:36:43,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3808 transitions. [2022-11-25 23:36:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:36:43,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:43,987 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] [2022-11-25 23:36:43,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:36:43,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash -55106621, now seen corresponding path program 1 times [2022-11-25 23:36:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:43,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199067833] [2022-11-25 23:36:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:43,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:44,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:44,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199067833] [2022-11-25 23:36:44,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199067833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:44,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:44,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:36:44,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497064553] [2022-11-25 23:36:44,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:44,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:36:44,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:44,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:36:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:36:44,285 INFO L87 Difference]: Start difference. First operand 2797 states and 3808 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:46,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:46,648 INFO L93 Difference]: Finished difference Result 7253 states and 10010 transitions. [2022-11-25 23:36:46,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:36:46,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 23:36:46,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:46,658 INFO L225 Difference]: With dead ends: 7253 [2022-11-25 23:36:46,658 INFO L226 Difference]: Without dead ends: 5221 [2022-11-25 23:36:46,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:36:46,663 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 975 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:46,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 935 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:36:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2022-11-25 23:36:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 2719. [2022-11-25 23:36:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2715 states have (on average 1.3620626151012891) internal successors, (3698), 2718 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3698 transitions. [2022-11-25 23:36:47,393 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3698 transitions. Word has length 53 [2022-11-25 23:36:47,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:47,393 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3698 transitions. [2022-11-25 23:36:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3698 transitions. [2022-11-25 23:36:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:36:47,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:47,397 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] [2022-11-25 23:36:47,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:36:47,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1129390909, now seen corresponding path program 1 times [2022-11-25 23:36:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:47,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59521047] [2022-11-25 23:36:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:47,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:47,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:47,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59521047] [2022-11-25 23:36:47,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59521047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:47,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:47,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:36:47,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043463593] [2022-11-25 23:36:47,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:47,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:36:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:47,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:36:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:36:47,749 INFO L87 Difference]: Start difference. First operand 2719 states and 3698 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:50,794 INFO L93 Difference]: Finished difference Result 8347 states and 11461 transitions. [2022-11-25 23:36:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:36:50,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 23:36:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:50,808 INFO L225 Difference]: With dead ends: 8347 [2022-11-25 23:36:50,808 INFO L226 Difference]: Without dead ends: 6445 [2022-11-25 23:36:50,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:36:50,812 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 949 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:50,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1234 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:36:50,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2022-11-25 23:36:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 2690. [2022-11-25 23:36:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2686 states have (on average 1.3615040953090096) internal successors, (3657), 2689 states have internal predecessors, (3657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3657 transitions. [2022-11-25 23:36:51,620 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3657 transitions. Word has length 53 [2022-11-25 23:36:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:51,620 INFO L495 AbstractCegarLoop]: Abstraction has 2690 states and 3657 transitions. [2022-11-25 23:36:51,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3657 transitions. [2022-11-25 23:36:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:36:51,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:51,623 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] [2022-11-25 23:36:51,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:36:51,624 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:51,625 INFO L85 PathProgramCache]: Analyzing trace with hash -421230622, now seen corresponding path program 1 times [2022-11-25 23:36:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:51,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7323402] [2022-11-25 23:36:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:51,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:51,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7323402] [2022-11-25 23:36:51,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7323402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:51,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:51,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:36:51,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243554312] [2022-11-25 23:36:51,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:51,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:36:51,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:36:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:36:51,937 INFO L87 Difference]: Start difference. First operand 2690 states and 3657 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:54,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:54,925 INFO L93 Difference]: Finished difference Result 5752 states and 7847 transitions. [2022-11-25 23:36:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:36:54,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 23:36:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:54,940 INFO L225 Difference]: With dead ends: 5752 [2022-11-25 23:36:54,940 INFO L226 Difference]: Without dead ends: 5747 [2022-11-25 23:36:54,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:36:54,943 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1364 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:54,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 1057 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:36:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5747 states. [2022-11-25 23:36:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5747 to 2690. [2022-11-25 23:36:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2686 states have (on average 1.360759493670886) internal successors, (3655), 2689 states have internal predecessors, (3655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3655 transitions. [2022-11-25 23:36:55,895 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3655 transitions. Word has length 53 [2022-11-25 23:36:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:55,895 INFO L495 AbstractCegarLoop]: Abstraction has 2690 states and 3655 transitions. [2022-11-25 23:36:55,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3655 transitions. [2022-11-25 23:36:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:36:55,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:55,899 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] [2022-11-25 23:36:55,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:36:55,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1237294753, now seen corresponding path program 1 times [2022-11-25 23:36:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:55,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873365531] [2022-11-25 23:36:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:55,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:55,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873365531] [2022-11-25 23:36:55,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873365531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:55,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:55,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:36:55,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656733151] [2022-11-25 23:36:55,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:55,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:36:55,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:36:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:36:55,994 INFO L87 Difference]: Start difference. First operand 2690 states and 3655 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:57,098 INFO L93 Difference]: Finished difference Result 3709 states and 5065 transitions. [2022-11-25 23:36:57,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:36:57,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 23:36:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:57,103 INFO L225 Difference]: With dead ends: 3709 [2022-11-25 23:36:57,103 INFO L226 Difference]: Without dead ends: 2697 [2022-11-25 23:36:57,105 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 [2022-11-25 23:36:57,106 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 179 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:57,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 668 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:36:57,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2022-11-25 23:36:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2690. [2022-11-25 23:36:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2686 states have (on average 1.3443782576321668) internal successors, (3611), 2689 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3611 transitions. [2022-11-25 23:36:57,798 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3611 transitions. Word has length 54 [2022-11-25 23:36:57,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:57,799 INFO L495 AbstractCegarLoop]: Abstraction has 2690 states and 3611 transitions. [2022-11-25 23:36:57,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3611 transitions. [2022-11-25 23:36:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:36:57,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:57,802 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] [2022-11-25 23:36:57,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:36:57,803 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash -863697757, now seen corresponding path program 1 times [2022-11-25 23:36:57,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:57,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938618716] [2022-11-25 23:36:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:57,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:57,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:57,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938618716] [2022-11-25 23:36:57,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938618716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:57,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:57,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:36:57,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203089593] [2022-11-25 23:36:57,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:57,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:36:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:36:57,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:36:57,892 INFO L87 Difference]: Start difference. First operand 2690 states and 3611 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:58,763 INFO L93 Difference]: Finished difference Result 3760 states and 5071 transitions. [2022-11-25 23:36:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:36:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 23:36:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:58,775 INFO L225 Difference]: With dead ends: 3760 [2022-11-25 23:36:58,775 INFO L226 Difference]: Without dead ends: 2696 [2022-11-25 23:36:58,778 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 [2022-11-25 23:36:58,778 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 195 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:58,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 669 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:36:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2022-11-25 23:36:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2690. [2022-11-25 23:36:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2686 states have (on average 1.3287416232315712) internal successors, (3569), 2689 states have internal predecessors, (3569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3569 transitions. [2022-11-25 23:36:59,640 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3569 transitions. Word has length 54 [2022-11-25 23:36:59,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:59,640 INFO L495 AbstractCegarLoop]: Abstraction has 2690 states and 3569 transitions. [2022-11-25 23:36:59,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:36:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3569 transitions. [2022-11-25 23:36:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:36:59,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:59,644 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] [2022-11-25 23:36:59,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:36:59,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:36:59,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1589153365, now seen corresponding path program 1 times [2022-11-25 23:36:59,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:59,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082272536] [2022-11-25 23:36:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:59,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:59,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:59,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082272536] [2022-11-25 23:36:59,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082272536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:36:59,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:36:59,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:36:59,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955859841] [2022-11-25 23:36:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:36:59,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:36:59,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:59,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:36:59,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:36:59,710 INFO L87 Difference]: Start difference. First operand 2690 states and 3569 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:00,574 INFO L93 Difference]: Finished difference Result 3839 states and 5122 transitions. [2022-11-25 23:37:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:00,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 23:37:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:00,577 INFO L225 Difference]: With dead ends: 3839 [2022-11-25 23:37:00,577 INFO L226 Difference]: Without dead ends: 2681 [2022-11-25 23:37:00,579 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 [2022-11-25 23:37:00,580 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 215 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:00,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 691 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:37:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-11-25 23:37:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2675. [2022-11-25 23:37:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2671 states have (on average 1.3103706476974917) internal successors, (3500), 2674 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 3500 transitions. [2022-11-25 23:37:01,671 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 3500 transitions. Word has length 54 [2022-11-25 23:37:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:01,671 INFO L495 AbstractCegarLoop]: Abstraction has 2675 states and 3500 transitions. [2022-11-25 23:37:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 3500 transitions. [2022-11-25 23:37:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:37:01,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:01,675 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] [2022-11-25 23:37:01,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:37:01,675 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:01,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:01,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1127796312, now seen corresponding path program 1 times [2022-11-25 23:37:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:01,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770242966] [2022-11-25 23:37:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:01,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:01,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:01,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770242966] [2022-11-25 23:37:01,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770242966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:01,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:01,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:37:01,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615390973] [2022-11-25 23:37:01,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:01,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:37:01,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:01,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:37:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:01,751 INFO L87 Difference]: Start difference. First operand 2675 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:03,192 INFO L93 Difference]: Finished difference Result 4401 states and 5795 transitions. [2022-11-25 23:37:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-11-25 23:37:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:03,196 INFO L225 Difference]: With dead ends: 4401 [2022-11-25 23:37:03,196 INFO L226 Difference]: Without dead ends: 3100 [2022-11-25 23:37:03,198 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 [2022-11-25 23:37:03,199 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 302 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:03,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 493 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:37:03,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2022-11-25 23:37:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2465. [2022-11-25 23:37:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2461 states have (on average 1.3092238927265338) internal successors, (3222), 2464 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3222 transitions. [2022-11-25 23:37:04,211 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3222 transitions. Word has length 55 [2022-11-25 23:37:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:04,211 INFO L495 AbstractCegarLoop]: Abstraction has 2465 states and 3222 transitions. [2022-11-25 23:37:04,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3222 transitions. [2022-11-25 23:37:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:37:04,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:04,213 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] [2022-11-25 23:37:04,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:37:04,214 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:04,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash 847139516, now seen corresponding path program 1 times [2022-11-25 23:37:04,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:04,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163019130] [2022-11-25 23:37:04,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:04,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:04,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:04,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163019130] [2022-11-25 23:37:04,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163019130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:04,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:04,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:37:04,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317453215] [2022-11-25 23:37:04,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:04,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:37:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:04,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:37:04,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:04,319 INFO L87 Difference]: Start difference. First operand 2465 states and 3222 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:05,501 INFO L93 Difference]: Finished difference Result 4091 states and 5364 transitions. [2022-11-25 23:37:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:05,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:37:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:05,505 INFO L225 Difference]: With dead ends: 4091 [2022-11-25 23:37:05,506 INFO L226 Difference]: Without dead ends: 2838 [2022-11-25 23:37:05,508 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 [2022-11-25 23:37:05,508 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 254 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:05,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 374 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:37:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2022-11-25 23:37:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2315. [2022-11-25 23:37:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2311 states have (on average 1.3085244482907832) internal successors, (3024), 2314 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3024 transitions. [2022-11-25 23:37:06,419 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3024 transitions. Word has length 56 [2022-11-25 23:37:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:06,419 INFO L495 AbstractCegarLoop]: Abstraction has 2315 states and 3024 transitions. [2022-11-25 23:37:06,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3024 transitions. [2022-11-25 23:37:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:37:06,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:06,422 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] [2022-11-25 23:37:06,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 23:37:06,423 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:06,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash 474120695, now seen corresponding path program 1 times [2022-11-25 23:37:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:06,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478216200] [2022-11-25 23:37:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:06,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:07,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:07,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478216200] [2022-11-25 23:37:07,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478216200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:07,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:07,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:37:07,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436178957] [2022-11-25 23:37:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:37:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:37:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:37:07,264 INFO L87 Difference]: Start difference. First operand 2315 states and 3024 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:10,240 INFO L93 Difference]: Finished difference Result 3668 states and 4803 transitions. [2022-11-25 23:37:10,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:37:10,241 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:37:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:10,245 INFO L225 Difference]: With dead ends: 3668 [2022-11-25 23:37:10,245 INFO L226 Difference]: Without dead ends: 3664 [2022-11-25 23:37:10,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:37:10,246 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1474 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:10,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 2584 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:37:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2022-11-25 23:37:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 2311. [2022-11-25 23:37:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 2308 states have (on average 1.3084922010398614) internal successors, (3020), 2310 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3020 transitions. [2022-11-25 23:37:11,008 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3020 transitions. Word has length 56 [2022-11-25 23:37:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:11,008 INFO L495 AbstractCegarLoop]: Abstraction has 2311 states and 3020 transitions. [2022-11-25 23:37:11,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3020 transitions. [2022-11-25 23:37:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:37:11,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:11,011 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] [2022-11-25 23:37:11,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 23:37:11,012 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:11,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1321631968, now seen corresponding path program 1 times [2022-11-25 23:37:11,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:11,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333177249] [2022-11-25 23:37:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:12,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:12,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333177249] [2022-11-25 23:37:12,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333177249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:12,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:12,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-25 23:37:12,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087625100] [2022-11-25 23:37:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:12,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 23:37:12,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 23:37:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:37:12,248 INFO L87 Difference]: Start difference. First operand 2311 states and 3020 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:17,092 INFO L93 Difference]: Finished difference Result 3441 states and 4467 transitions. [2022-11-25 23:37:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 23:37:17,092 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:37:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:17,096 INFO L225 Difference]: With dead ends: 3441 [2022-11-25 23:37:17,097 INFO L226 Difference]: Without dead ends: 3435 [2022-11-25 23:37:17,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 23:37:17,098 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2145 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:17,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 4155 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 23:37:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2022-11-25 23:37:17,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 2311. [2022-11-25 23:37:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 2308 states have (on average 1.308058925476603) internal successors, (3019), 2310 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3019 transitions. [2022-11-25 23:37:17,929 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3019 transitions. Word has length 56 [2022-11-25 23:37:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:17,929 INFO L495 AbstractCegarLoop]: Abstraction has 2311 states and 3019 transitions. [2022-11-25 23:37:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:17,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3019 transitions. [2022-11-25 23:37:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:37:17,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:17,932 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] [2022-11-25 23:37:17,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 23:37:17,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:17,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1854706179, now seen corresponding path program 1 times [2022-11-25 23:37:17,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:17,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663133010] [2022-11-25 23:37:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:17,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:18,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:18,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663133010] [2022-11-25 23:37:18,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663133010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:18,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:18,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:37:18,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527491532] [2022-11-25 23:37:18,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:18,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:37:18,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:37:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:37:18,661 INFO L87 Difference]: Start difference. First operand 2311 states and 3019 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:21,708 INFO L93 Difference]: Finished difference Result 3692 states and 4830 transitions. [2022-11-25 23:37:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:37:21,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:37:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:21,713 INFO L225 Difference]: With dead ends: 3692 [2022-11-25 23:37:21,713 INFO L226 Difference]: Without dead ends: 3470 [2022-11-25 23:37:21,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:37:21,716 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1629 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:21,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2086 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:37:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-11-25 23:37:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2299. [2022-11-25 23:37:22,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2297 states have (on average 1.3086634740966478) internal successors, (3006), 2298 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3006 transitions. [2022-11-25 23:37:22,677 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3006 transitions. Word has length 56 [2022-11-25 23:37:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:22,677 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3006 transitions. [2022-11-25 23:37:22,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3006 transitions. [2022-11-25 23:37:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:37:22,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:22,680 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] [2022-11-25 23:37:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 23:37:22,681 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:22,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1858163223, now seen corresponding path program 1 times [2022-11-25 23:37:22,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:22,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611388318] [2022-11-25 23:37:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:23,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:23,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611388318] [2022-11-25 23:37:23,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611388318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:23,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:23,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:37:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674080225] [2022-11-25 23:37:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:23,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:37:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:37:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:37:23,314 INFO L87 Difference]: Start difference. First operand 2299 states and 3006 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:27,035 INFO L93 Difference]: Finished difference Result 3895 states and 5101 transitions. [2022-11-25 23:37:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:37:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:37:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:27,040 INFO L225 Difference]: With dead ends: 3895 [2022-11-25 23:37:27,041 INFO L226 Difference]: Without dead ends: 3891 [2022-11-25 23:37:27,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:37:27,043 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1368 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:27,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 3282 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:37:27,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2022-11-25 23:37:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 2299. [2022-11-25 23:37:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2297 states have (on average 1.30822812363953) internal successors, (3005), 2298 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3005 transitions. [2022-11-25 23:37:28,215 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3005 transitions. Word has length 56 [2022-11-25 23:37:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:28,216 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3005 transitions. [2022-11-25 23:37:28,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3005 transitions. [2022-11-25 23:37:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:37:28,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:28,218 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] [2022-11-25 23:37:28,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 23:37:28,219 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:28,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash -612654208, now seen corresponding path program 1 times [2022-11-25 23:37:28,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:28,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119255904] [2022-11-25 23:37:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:28,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:28,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119255904] [2022-11-25 23:37:28,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119255904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:28,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:28,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:37:28,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289606345] [2022-11-25 23:37:28,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:28,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:37:28,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:28,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:37:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:28,271 INFO L87 Difference]: Start difference. First operand 2299 states and 3005 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:29,459 INFO L93 Difference]: Finished difference Result 3635 states and 4768 transitions. [2022-11-25 23:37:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:29,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:37:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:29,463 INFO L225 Difference]: With dead ends: 3635 [2022-11-25 23:37:29,463 INFO L226 Difference]: Without dead ends: 2457 [2022-11-25 23:37:29,464 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 [2022-11-25 23:37:29,465 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 206 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:29,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 387 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:37:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2022-11-25 23:37:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2187. [2022-11-25 23:37:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.3051235132662398) internal successors, (2853), 2186 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2853 transitions. [2022-11-25 23:37:30,375 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2853 transitions. Word has length 56 [2022-11-25 23:37:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:30,375 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 2853 transitions. [2022-11-25 23:37:30,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2853 transitions. [2022-11-25 23:37:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:37:30,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:30,378 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] [2022-11-25 23:37:30,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 23:37:30,379 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:30,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash -370722732, now seen corresponding path program 1 times [2022-11-25 23:37:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:30,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987363975] [2022-11-25 23:37:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:30,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:30,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987363975] [2022-11-25 23:37:30,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987363975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:30,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:30,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:37:30,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016331898] [2022-11-25 23:37:30,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:30,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:37:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:30,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:37:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:37:30,507 INFO L87 Difference]: Start difference. First operand 2187 states and 2853 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:31,535 INFO L93 Difference]: Finished difference Result 2193 states and 2856 transitions. [2022-11-25 23:37:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:37:31,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:37:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:31,539 INFO L225 Difference]: With dead ends: 2193 [2022-11-25 23:37:31,540 INFO L226 Difference]: Without dead ends: 1886 [2022-11-25 23:37:31,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:37:31,541 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 466 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:31,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 547 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:37:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2022-11-25 23:37:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1882. [2022-11-25 23:37:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 1.3035619351408825) internal successors, (2452), 1881 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2452 transitions. [2022-11-25 23:37:32,374 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2452 transitions. Word has length 56 [2022-11-25 23:37:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:32,374 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 2452 transitions. [2022-11-25 23:37:32,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2452 transitions. [2022-11-25 23:37:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 23:37:32,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:32,376 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] [2022-11-25 23:37:32,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 23:37:32,377 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2033147619, now seen corresponding path program 1 times [2022-11-25 23:37:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:32,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232723866] [2022-11-25 23:37:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:32,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:32,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:32,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232723866] [2022-11-25 23:37:32,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232723866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:32,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:32,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:37:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788522114] [2022-11-25 23:37:32,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:32,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:37:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:37:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:32,502 INFO L87 Difference]: Start difference. First operand 1882 states and 2452 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:34,445 INFO L93 Difference]: Finished difference Result 3598 states and 4778 transitions. [2022-11-25 23:37:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:34,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-25 23:37:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:34,448 INFO L225 Difference]: With dead ends: 3598 [2022-11-25 23:37:34,448 INFO L226 Difference]: Without dead ends: 2612 [2022-11-25 23:37:34,449 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 [2022-11-25 23:37:34,449 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 131 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:34,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 431 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:37:34,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2022-11-25 23:37:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2418. [2022-11-25 23:37:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 1.2991311543235415) internal successors, (3140), 2417 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3140 transitions. [2022-11-25 23:37:36,069 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3140 transitions. Word has length 57 [2022-11-25 23:37:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:36,069 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3140 transitions. [2022-11-25 23:37:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3140 transitions. [2022-11-25 23:37:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 23:37:36,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:36,071 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] [2022-11-25 23:37:36,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 23:37:36,072 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1382446820, now seen corresponding path program 1 times [2022-11-25 23:37:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:36,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795670145] [2022-11-25 23:37:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:36,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:36,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795670145] [2022-11-25 23:37:36,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795670145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:36,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:36,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:37:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990738534] [2022-11-25 23:37:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:36,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:37:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:37:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:36,185 INFO L87 Difference]: Start difference. First operand 2418 states and 3140 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:38,545 INFO L93 Difference]: Finished difference Result 4892 states and 6468 transitions. [2022-11-25 23:37:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-25 23:37:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:38,549 INFO L225 Difference]: With dead ends: 4892 [2022-11-25 23:37:38,550 INFO L226 Difference]: Without dead ends: 3526 [2022-11-25 23:37:38,552 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 [2022-11-25 23:37:38,552 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 111 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:38,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 427 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:37:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2022-11-25 23:37:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3172. [2022-11-25 23:37:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 3171 states have (on average 1.2964364553768528) internal successors, (4111), 3171 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 4111 transitions. [2022-11-25 23:37:40,068 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 4111 transitions. Word has length 60 [2022-11-25 23:37:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:40,069 INFO L495 AbstractCegarLoop]: Abstraction has 3172 states and 4111 transitions. [2022-11-25 23:37:40,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 4111 transitions. [2022-11-25 23:37:40,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 23:37:40,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:40,071 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] [2022-11-25 23:37:40,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 23:37:40,071 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1340348596, now seen corresponding path program 1 times [2022-11-25 23:37:40,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:40,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492863802] [2022-11-25 23:37:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:40,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:40,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:40,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492863802] [2022-11-25 23:37:40,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492863802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:40,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:40,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:37:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159701315] [2022-11-25 23:37:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:40,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:37:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:37:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:37:40,181 INFO L87 Difference]: Start difference. First operand 3172 states and 4111 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:43,017 INFO L93 Difference]: Finished difference Result 6634 states and 8734 transitions. [2022-11-25 23:37:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:37:43,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-25 23:37:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:43,023 INFO L225 Difference]: With dead ends: 6634 [2022-11-25 23:37:43,023 INFO L226 Difference]: Without dead ends: 4754 [2022-11-25 23:37:43,025 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 [2022-11-25 23:37:43,028 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 80 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:43,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 429 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:37:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2022-11-25 23:37:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4256. [2022-11-25 23:37:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 1.2893066980023502) internal successors, (5486), 4255 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 5486 transitions. [2022-11-25 23:37:45,261 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 5486 transitions. Word has length 64 [2022-11-25 23:37:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:45,261 INFO L495 AbstractCegarLoop]: Abstraction has 4256 states and 5486 transitions. [2022-11-25 23:37:45,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 5486 transitions. [2022-11-25 23:37:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 23:37:45,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:45,263 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] [2022-11-25 23:37:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 23:37:45,263 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:45,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1005334251, now seen corresponding path program 1 times [2022-11-25 23:37:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:45,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712273747] [2022-11-25 23:37:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:45,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:45,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712273747] [2022-11-25 23:37:45,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712273747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:45,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:45,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:37:45,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455352994] [2022-11-25 23:37:45,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:37:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:37:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:37:45,608 INFO L87 Difference]: Start difference. First operand 4256 states and 5486 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:51,440 INFO L93 Difference]: Finished difference Result 7965 states and 10242 transitions. [2022-11-25 23:37:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:37:51,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-25 23:37:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:51,451 INFO L225 Difference]: With dead ends: 7965 [2022-11-25 23:37:51,451 INFO L226 Difference]: Without dead ends: 7963 [2022-11-25 23:37:51,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:37:51,454 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1109 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1825 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:37:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7963 states. [2022-11-25 23:37:54,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7963 to 4926. [2022-11-25 23:37:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4926 states, 4925 states have (on average 1.2828426395939085) internal successors, (6318), 4925 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4926 states to 4926 states and 6318 transitions. [2022-11-25 23:37:54,688 INFO L78 Accepts]: Start accepts. Automaton has 4926 states and 6318 transitions. Word has length 68 [2022-11-25 23:37:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:54,689 INFO L495 AbstractCegarLoop]: Abstraction has 4926 states and 6318 transitions. [2022-11-25 23:37:54,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:37:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4926 states and 6318 transitions. [2022-11-25 23:37:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 23:37:54,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:54,692 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] [2022-11-25 23:37:54,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 23:37:54,692 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:37:54,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:54,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1468670967, now seen corresponding path program 1 times [2022-11-25 23:37:54,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:54,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162120206] [2022-11-25 23:37:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:54,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:54,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:54,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162120206] [2022-11-25 23:37:54,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162120206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:54,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:54,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:37:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992886856] [2022-11-25 23:37:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:54,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:37:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:37:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:37:54,839 INFO L87 Difference]: Start difference. First operand 4926 states and 6318 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:01,294 INFO L93 Difference]: Finished difference Result 11105 states and 14315 transitions. [2022-11-25 23:38:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:38:01,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-25 23:38:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:01,306 INFO L225 Difference]: With dead ends: 11105 [2022-11-25 23:38:01,306 INFO L226 Difference]: Without dead ends: 9719 [2022-11-25 23:38:01,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:38:01,310 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1813 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:01,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 407 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:38:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9719 states. [2022-11-25 23:38:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9719 to 4846. [2022-11-25 23:38:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 4845 states have (on average 1.2831785345717235) internal successors, (6217), 4845 states have internal predecessors, (6217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 6217 transitions. [2022-11-25 23:38:04,296 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 6217 transitions. Word has length 71 [2022-11-25 23:38:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:04,297 INFO L495 AbstractCegarLoop]: Abstraction has 4846 states and 6217 transitions. [2022-11-25 23:38:04,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 6217 transitions. [2022-11-25 23:38:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:38:04,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:04,300 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] [2022-11-25 23:38:04,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 23:38:04,301 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:38:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash 312155261, now seen corresponding path program 1 times [2022-11-25 23:38:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:04,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572654843] [2022-11-25 23:38:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:04,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:04,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:04,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572654843] [2022-11-25 23:38:04,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572654843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:04,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:04,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:38:04,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012101378] [2022-11-25 23:38:04,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:04,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:38:04,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:38:04,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:38:04,711 INFO L87 Difference]: Start difference. First operand 4846 states and 6217 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:10,544 INFO L93 Difference]: Finished difference Result 7479 states and 9640 transitions. [2022-11-25 23:38:10,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:38:10,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-25 23:38:10,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:10,554 INFO L225 Difference]: With dead ends: 7479 [2022-11-25 23:38:10,554 INFO L226 Difference]: Without dead ends: 7477 [2022-11-25 23:38:10,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:38:10,557 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 816 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:10,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1807 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:38:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2022-11-25 23:38:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 5082. [2022-11-25 23:38:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5082 states, 5081 states have (on average 1.2812438496358984) internal successors, (6510), 5081 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 6510 transitions. [2022-11-25 23:38:14,193 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 6510 transitions. Word has length 73 [2022-11-25 23:38:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:14,193 INFO L495 AbstractCegarLoop]: Abstraction has 5082 states and 6510 transitions. [2022-11-25 23:38:14,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 6510 transitions. [2022-11-25 23:38:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 23:38:14,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:14,197 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] [2022-11-25 23:38:14,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 23:38:14,197 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:38:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1037785061, now seen corresponding path program 1 times [2022-11-25 23:38:14,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:14,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592114896] [2022-11-25 23:38:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:14,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:14,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592114896] [2022-11-25 23:38:14,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592114896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:14,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:14,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:38:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333579446] [2022-11-25 23:38:14,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:14,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:38:14,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:14,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:38:14,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:38:14,589 INFO L87 Difference]: Start difference. First operand 5082 states and 6510 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:20,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:20,496 INFO L93 Difference]: Finished difference Result 7547 states and 9716 transitions. [2022-11-25 23:38:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:38:20,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-25 23:38:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:20,505 INFO L225 Difference]: With dead ends: 7547 [2022-11-25 23:38:20,505 INFO L226 Difference]: Without dead ends: 7545 [2022-11-25 23:38:20,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:38:20,508 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 891 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:20,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1852 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:38:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7545 states. [2022-11-25 23:38:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7545 to 5060. [2022-11-25 23:38:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 5059 states have (on average 1.2816762205969559) internal successors, (6484), 5059 states have internal predecessors, (6484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 6484 transitions. [2022-11-25 23:38:23,714 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 6484 transitions. Word has length 74 [2022-11-25 23:38:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:23,715 INFO L495 AbstractCegarLoop]: Abstraction has 5060 states and 6484 transitions. [2022-11-25 23:38:23,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 6484 transitions. [2022-11-25 23:38:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 23:38:23,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:23,717 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] [2022-11-25 23:38:23,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 23:38:23,718 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:38:23,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:23,718 INFO L85 PathProgramCache]: Analyzing trace with hash 445950059, now seen corresponding path program 1 times [2022-11-25 23:38:23,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:23,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226356980] [2022-11-25 23:38:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:24,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:24,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226356980] [2022-11-25 23:38:24,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226356980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:24,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:24,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:38:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137231131] [2022-11-25 23:38:24,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:38:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:38:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:38:24,087 INFO L87 Difference]: Start difference. First operand 5060 states and 6484 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:29,566 INFO L93 Difference]: Finished difference Result 7699 states and 9907 transitions. [2022-11-25 23:38:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:38:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-25 23:38:29,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:29,575 INFO L225 Difference]: With dead ends: 7699 [2022-11-25 23:38:29,575 INFO L226 Difference]: Without dead ends: 7697 [2022-11-25 23:38:29,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:38:29,578 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 839 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:29,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1477 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:38:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2022-11-25 23:38:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 5244. [2022-11-25 23:38:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5244 states, 5243 states have (on average 1.2807552927713142) internal successors, (6715), 5243 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5244 states to 5244 states and 6715 transitions. [2022-11-25 23:38:33,210 INFO L78 Accepts]: Start accepts. Automaton has 5244 states and 6715 transitions. Word has length 74 [2022-11-25 23:38:33,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:33,210 INFO L495 AbstractCegarLoop]: Abstraction has 5244 states and 6715 transitions. [2022-11-25 23:38:33,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5244 states and 6715 transitions. [2022-11-25 23:38:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 23:38:33,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:33,212 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:38:33,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-25 23:38:33,213 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:38:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1532349139, now seen corresponding path program 1 times [2022-11-25 23:38:33,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:33,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241118644] [2022-11-25 23:38:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:33,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 23:38:33,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:33,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241118644] [2022-11-25 23:38:33,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241118644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:33,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:33,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:38:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308521256] [2022-11-25 23:38:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:38:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:38:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:38:33,505 INFO L87 Difference]: Start difference. First operand 5244 states and 6715 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:40,787 INFO L93 Difference]: Finished difference Result 12372 states and 15788 transitions. [2022-11-25 23:38:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:38:40,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-25 23:38:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:40,799 INFO L225 Difference]: With dead ends: 12372 [2022-11-25 23:38:40,799 INFO L226 Difference]: Without dead ends: 9927 [2022-11-25 23:38:40,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:38:40,805 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 950 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:40,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 871 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:38:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9927 states. [2022-11-25 23:38:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9927 to 5185. [2022-11-25 23:38:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 1.2822145061728396) internal successors, (6647), 5184 states have internal predecessors, (6647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 6647 transitions. [2022-11-25 23:38:44,122 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 6647 transitions. Word has length 76 [2022-11-25 23:38:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:44,122 INFO L495 AbstractCegarLoop]: Abstraction has 5185 states and 6647 transitions. [2022-11-25 23:38:44,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 6647 transitions. [2022-11-25 23:38:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 23:38:44,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:44,125 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:38:44,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-25 23:38:44,126 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:38:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash -998694756, now seen corresponding path program 1 times [2022-11-25 23:38:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562020639] [2022-11-25 23:38:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 23:38:44,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:44,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562020639] [2022-11-25 23:38:44,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562020639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:44,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:44,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:38:44,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026996891] [2022-11-25 23:38:44,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:38:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:38:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:38:44,414 INFO L87 Difference]: Start difference. First operand 5185 states and 6647 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:51,941 INFO L93 Difference]: Finished difference Result 11971 states and 15322 transitions. [2022-11-25 23:38:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:38:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-25 23:38:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:51,953 INFO L225 Difference]: With dead ends: 11971 [2022-11-25 23:38:51,953 INFO L226 Difference]: Without dead ends: 9644 [2022-11-25 23:38:51,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:38:51,958 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 699 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:51,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 989 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:38:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9644 states. [2022-11-25 23:38:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9644 to 5121. [2022-11-25 23:38:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 1.2833984375) internal successors, (6571), 5120 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 6571 transitions. [2022-11-25 23:38:55,577 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 6571 transitions. Word has length 76 [2022-11-25 23:38:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:55,577 INFO L495 AbstractCegarLoop]: Abstraction has 5121 states and 6571 transitions. [2022-11-25 23:38:55,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:38:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 6571 transitions. [2022-11-25 23:38:55,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 23:38:55,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:55,579 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:38:55,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 23:38:55,579 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:38:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:55,580 INFO L85 PathProgramCache]: Analyzing trace with hash 978845119, now seen corresponding path program 1 times [2022-11-25 23:38:55,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:55,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943817632] [2022-11-25 23:38:55,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:55,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:56,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:56,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943817632] [2022-11-25 23:38:56,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943817632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:38:56,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769282905] [2022-11-25 23:38:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:56,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:38:56,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:56,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:38:56,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:38:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:56,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-25 23:38:56,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:03,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:19,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769282905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:19,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [130147844] [2022-11-25 23:39:19,379 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-25 23:39:19,379 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:39:19,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:39:19,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:39:19,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:39:19,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:39:19,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:39:19,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:39:19,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:39:19,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:39:19,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:39:19,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:39:23,305 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:40:44,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [130147844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:40:44,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:40:44,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [16, 26, 26] total 105 [2022-11-25 23:40:44,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567389074] [2022-11-25 23:40:44,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:40:44,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-25 23:40:44,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:40:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-25 23:40:44,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1967, Invalid=8953, Unknown=0, NotChecked=0, Total=10920 [2022-11-25 23:40:44,161 INFO L87 Difference]: Start difference. First operand 5121 states and 6571 transitions. Second operand has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:05,969 INFO L93 Difference]: Finished difference Result 5699 states and 7326 transitions. [2022-11-25 23:41:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-25 23:41:05,970 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 23:41:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:05,975 INFO L225 Difference]: With dead ends: 5699 [2022-11-25 23:41:05,975 INFO L226 Difference]: Without dead ends: 5033 [2022-11-25 23:41:05,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 132 SyntacticMatches, 12 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6144 ImplicationChecksByTransitivity, 86.1s TimeCoverageRelationStatistics Valid=1967, Invalid=8953, Unknown=0, NotChecked=0, Total=10920 [2022-11-25 23:41:05,981 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 9 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 4639 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:05,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 555 Invalid, 4644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 4639 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2022-11-25 23:41:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5033 states. [2022-11-25 23:41:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5033 to 5033. [2022-11-25 23:41:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 5032 states have (on average 1.2829888712241653) internal successors, (6456), 5032 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 6456 transitions. [2022-11-25 23:41:09,189 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 6456 transitions. Word has length 77 [2022-11-25 23:41:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:09,189 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 6456 transitions. [2022-11-25 23:41:09,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 6456 transitions. [2022-11-25 23:41:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 23:41:09,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:09,192 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:41:09,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:41:09,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:41:09,401 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:41:09,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash 385067998, now seen corresponding path program 1 times [2022-11-25 23:41:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:09,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634163381] [2022-11-25 23:41:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:41:10,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:10,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634163381] [2022-11-25 23:41:10,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634163381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:41:10,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233934592] [2022-11-25 23:41:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:10,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:41:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:41:10,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:41:10,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:41:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:10,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 23:41:10,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:41:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 23:41:12,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:41:12,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233934592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:41:12,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:41:12,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2022-11-25 23:41:12,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394055782] [2022-11-25 23:41:12,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:41:12,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:41:12,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:41:12,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:41:12,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:41:12,045 INFO L87 Difference]: Start difference. First operand 5033 states and 6456 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:17,968 INFO L93 Difference]: Finished difference Result 8727 states and 11199 transitions. [2022-11-25 23:41:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:41:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 23:41:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:17,977 INFO L225 Difference]: With dead ends: 8727 [2022-11-25 23:41:17,977 INFO L226 Difference]: Without dead ends: 6344 [2022-11-25 23:41:17,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-11-25 23:41:17,982 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1277 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:17,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1164 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:41:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2022-11-25 23:41:21,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 5076. [2022-11-25 23:41:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5075 states have (on average 1.283743842364532) internal successors, (6515), 5075 states have internal predecessors, (6515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 6515 transitions. [2022-11-25 23:41:21,874 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 6515 transitions. Word has length 77 [2022-11-25 23:41:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:21,875 INFO L495 AbstractCegarLoop]: Abstraction has 5076 states and 6515 transitions. [2022-11-25 23:41:21,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 6515 transitions. [2022-11-25 23:41:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 23:41:21,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:21,878 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:41:21,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:41:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-25 23:41:22,095 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:41:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash -368345732, now seen corresponding path program 1 times [2022-11-25 23:41:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:22,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949652] [2022-11-25 23:41:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:41:23,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:23,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949652] [2022-11-25 23:41:23,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:41:23,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592504070] [2022-11-25 23:41:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:23,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:41:23,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:41:23,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:41:23,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:41:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:23,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 23:41:23,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:41:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:41:25,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:41:25,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592504070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:41:25,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:41:25,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 27 [2022-11-25 23:41:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431411725] [2022-11-25 23:41:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:41:25,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 23:41:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:41:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 23:41:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:41:25,757 INFO L87 Difference]: Start difference. First operand 5076 states and 6515 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:36,835 INFO L93 Difference]: Finished difference Result 11163 states and 14323 transitions. [2022-11-25 23:41:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 23:41:36,836 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 23:41:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:36,848 INFO L225 Difference]: With dead ends: 11163 [2022-11-25 23:41:36,848 INFO L226 Difference]: Without dead ends: 8800 [2022-11-25 23:41:36,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=293, Invalid=1513, Unknown=0, NotChecked=0, Total=1806 [2022-11-25 23:41:36,852 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1403 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:36,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2697 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 23:41:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8800 states. [2022-11-25 23:41:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8800 to 5639. [2022-11-25 23:41:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 5638 states have (on average 1.2820148989003193) internal successors, (7228), 5638 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 7228 transitions. [2022-11-25 23:41:40,982 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 7228 transitions. Word has length 77 [2022-11-25 23:41:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:40,983 INFO L495 AbstractCegarLoop]: Abstraction has 5639 states and 7228 transitions. [2022-11-25 23:41:40,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:41:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 7228 transitions. [2022-11-25 23:41:40,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 23:41:40,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:40,984 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:41:40,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:41:41,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-25 23:41:41,185 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:41:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:41,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1253368141, now seen corresponding path program 1 times [2022-11-25 23:41:41,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:41,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398543256] [2022-11-25 23:41:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:41,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:41:42,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:42,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398543256] [2022-11-25 23:41:42,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398543256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:41:42,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733215510] [2022-11-25 23:41:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:42,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:41:42,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:41:42,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:41:42,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5dffca-e37f-4cad-b177-b46275c8d36e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:41:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:42,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-25 23:41:42,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:41:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:41:47,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:42:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:05,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733215510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:42:05,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1728118802] [2022-11-25 23:42:05,850 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-25 23:42:05,851 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:42:05,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:42:05,852 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:42:05,852 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:42:06,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:06,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:06,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:06,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:42:06,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:42:06,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:42:06,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:43:48,761 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:45:37,008 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '506287#(and (= ~__return_7447~0 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~2#1| 127) (= ~__return_8468~0 0) (<= 0 ~id3~0) (= ~__return_6753~0 0) (= ~__return_7712~0 0) (<= 0 (+ ~p3_new~0 1)) (= ~__return_7807~0 0) (= ~__return_7749~0 0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~2#1|) (= ~__return_6925~0 0) (<= ~__return_6326~0 1) (<= ~__return_6532~0 1) (= ~__return_7029~0 0) (<= 0 ~__return_6532~0) (= ~__return_7853~0 0) (= ~__return_7563~0 0) (= ~__return_7300~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~8#1| 1)) (= ~__return_7990~0 0) (= ~__return_7776~0 0) (= (ite (= |ULTIMATE.start_main_~main__c1~0#1| 0) 0 1) |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 1 ~__return_6326~0) (= ~__return_6690~0 0) (<= 0 ~id1~0) (= |ULTIMATE.start_main_~check__tmp~24#1| 1) (= |ULTIMATE.start_main_~check__tmp~1#1| 1) (<= 0 |ULTIMATE.start_main_~check__tmp~2#1|) (= ~__return_8548~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~2#1| 1)) (= ~p2~0 0) (<= (+ ~p1_new~0 1) 0) (<= 1 ~r1~0) (= ~__return_7331~0 0) (= ~__return_7163~0 0) (= ~__return_6996~0 0) (= ~__return_8636~0 0) (<= 0 ~mode3~0) (= ~__return_7106~0 0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~1#1| 1)) (<= ~send1~0 127) (= ~__return_8230~0 0) (<= ~st1~0 0) (= ~__return_7396~0 0) (= ~__return_8019~0 0) (<= 0 (+ ~p3_old~0 1)) (= ~__return_8411~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_24~0#1|) (= (mod |ULTIMATE.start_main_~assert__arg~2#1| 256) 0) (<= ~mode2~0 1) (<= |ULTIMATE.start_main_~check__tmp~2#1| 1) (<= 0 ~st1~0) (<= ~r1~0 257) (= ~__return_8047~0 0) (<= 0 ~st2~0) (<= 1 ~__return_7910~0) (<= ~mode3~0 1) (<= ~__return_7910~0 1) (<= 0 |ULTIMATE.start_main_~assert__arg~23#1|) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (= ~__return_7530~0 0) (<= ~id1~0 127) (= ~__return_6959~0 0) (<= (+ ~p3_old~0 1) 0) (= ~__return_7641~0 0) (= ~__return_7678~0 0) (= ~__return_8499~0 0) (= ~__return_8334~0 0) (= ~__return_8277~0 0) (= |ULTIMATE.start_main_~init__tmp~0#1| 1) (= ~__return_6886~0 0) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_7882~0 0) (<= (+ ~nomsg~0 1) 0) (= ~__return_6839~0 0) (<= ~mode1~0 1) (= ~__return_7060~0 0) (= ~__return_6404~0 0) (= ~__return_8306~0 0) (<= (+ ~p2_new~0 1) 0) (= ~__return_8440~0 0) (= ~__return_7594~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~2#1| 1) 0) (= ~__return_8199~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~8#1| 1) 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (= ~__return_8605~0 0) (= ~__return_7243~0 0) (<= ~id3~0 127) (= ~__return_7272~0 0) (= ~__return_7135~0 0) (<= |ULTIMATE.start_main_~assert__arg~23#1| 1) (<= 0 ~id2~0) (= |#NULL.offset| 0) (<= 0 (+ ~nomsg~0 1)) (= ~__return_7941~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~1#1| 1) 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1| 127) (= ~__return_7481~0 0) (<= |ULTIMATE.start_main_~__tmp_24~0#1| 1) (<= (+ |ULTIMATE.start_main_~node1__m1~1#1| 1) 0) (= ~__return_8171~0 0) (= ~__return_8365~0 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= |ULTIMATE.start_main_~assert__arg~2#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (<= (+ ~p3_new~0 1) 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (= ~__return_8142~0 0) (= ~p3~0 0) (<= 0 (+ ~p1_new~0 1)) (= ~__return_7194~0 0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1|) (= ~p1~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 ~send1~0) (= ~__return_6808~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (= ~__return_main~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~1#1| 1)) (= ~__return_8078~0 0) (= ~__return_8577~0 0) (<= 1 ~__return_6465~0) (<= ~__return_6465~0 1) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= |ULTIMATE.start_main_~main__i2~0#1| 0))' at error location [2022-11-25 23:45:37,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:45:37,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:45:37,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 63 [2022-11-25 23:45:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060414158] [2022-11-25 23:45:37,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:45:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-25 23:45:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-25 23:45:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1956, Invalid=12324, Unknown=0, NotChecked=0, Total=14280 [2022-11-25 23:45:37,014 INFO L87 Difference]: Start difference. First operand 5639 states and 7228 transitions. Second operand has 63 states, 63 states have (on average 3.761904761904762) internal successors, (237), 63 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)