./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 a158f4486af48c98a7df56cba98940178e8617d42ff04ad885cda239ab95e10a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:12:55,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:12:55,443 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:12:55,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:12:55,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:12:55,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:12:55,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:12:55,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:12:55,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:12:55,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:12:55,484 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:12:55,485 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:12:55,485 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:12:55,486 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:12:55,486 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:12:55,487 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:12:55,487 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:12:55,488 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:12:55,488 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:12:55,489 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:12:55,489 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:12:55,490 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:12:55,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:12:55,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:12:55,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:12:55,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:12:55,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:12:55,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:12:55,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:12:55,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:12:55,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:12:55,494 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:12:55,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:12:55,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:12:55,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:12:55,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:12:55,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:55,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:12:55,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:12:55,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:12:55,497 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:12:55,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:12:55,497 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:12:55,498 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:12:55,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:12:55,498 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a158f4486af48c98a7df56cba98940178e8617d42ff04ad885cda239ab95e10a [2023-11-19 04:12:55,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:12:55,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:12:55,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:12:55,807 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:12:55,808 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:12:55,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-19 04:12:59,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:12:59,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:12:59,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-19 04:12:59,353 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/data/a6c778101/79dd78fabc014073970ad0e99fcfa08f/FLAG017ca0a9b [2023-11-19 04:12:59,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/data/a6c778101/79dd78fabc014073970ad0e99fcfa08f [2023-11-19 04:12:59,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:12:59,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:12:59,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:59,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:12:59,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:12:59,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:59" (1/1) ... [2023-11-19 04:12:59,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b0f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:59, skipping insertion in model container [2023-11-19 04:12:59,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:59" (1/1) ... [2023-11-19 04:12:59,444 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:12:59,733 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7119,7132] [2023-11-19 04:12:59,768 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9806,9819] [2023-11-19 04:12:59,780 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10897,10910] [2023-11-19 04:12:59,795 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11503,11516] [2023-11-19 04:12:59,819 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12922,12935] [2023-11-19 04:12:59,826 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13528,13541] [2023-11-19 04:12:59,866 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14457,14470] [2023-11-19 04:12:59,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:59,961 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:13:00,046 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7119,7132] [2023-11-19 04:13:00,057 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9806,9819] [2023-11-19 04:13:00,073 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10897,10910] [2023-11-19 04:13:00,077 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11503,11516] [2023-11-19 04:13:00,092 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12922,12935] [2023-11-19 04:13:00,096 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13528,13541] [2023-11-19 04:13:00,102 WARN L240 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_3efa3519-28c3-4432-87da-4651e65451cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14457,14470] [2023-11-19 04:13:00,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:13:00,172 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:13:00,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00 WrapperNode [2023-11-19 04:13:00,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:13:00,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:13:00,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:13:00,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:13:00,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,262 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1046 [2023-11-19 04:13:00,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:13:00,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:13:00,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:13:00,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:13:00,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:13:00,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:13:00,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:13:00,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:13:00,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (1/1) ... [2023-11-19 04:13:00,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:13:00,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:00,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:13:00,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:13:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:13:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:13:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:13:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:13:00,595 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:13:00,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:13:01,617 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:13:01,708 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:13:01,708 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:13:01,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:01 BoogieIcfgContainer [2023-11-19 04:13:01,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:13:01,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:13:01,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:13:01,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:13:01,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:12:59" (1/3) ... [2023-11-19 04:13:01,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5d592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:01, skipping insertion in model container [2023-11-19 04:13:01,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:00" (2/3) ... [2023-11-19 04:13:01,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5d592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:01, skipping insertion in model container [2023-11-19 04:13:01,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:01" (3/3) ... [2023-11-19 04:13:01,725 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-19 04:13:01,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:13:01,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-19 04:13:01,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:13:01,800 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=LoopHeads, 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;@72545210, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:13:01,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 04:13:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 181 states have (on average 1.839779005524862) internal successors, (333), 189 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 04:13:01,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:01,818 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] [2023-11-19 04:13:01,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:01,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:01,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1585983530, now seen corresponding path program 1 times [2023-11-19 04:13:01,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:01,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171270775] [2023-11-19 04:13:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:01,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:02,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171270775] [2023-11-19 04:13:02,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171270775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:02,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:02,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:13:02,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331179834] [2023-11-19 04:13:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:13:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:13:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:13:02,561 INFO L87 Difference]: Start difference. First operand has 190 states, 181 states have (on average 1.839779005524862) internal successors, (333), 189 states have internal predecessors, (333), 0 states have call successors, (0), 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 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:02,917 INFO L93 Difference]: Finished difference Result 305 states and 511 transitions. [2023-11-19 04:13:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:13:02,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-19 04:13:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:02,931 INFO L225 Difference]: With dead ends: 305 [2023-11-19 04:13:02,931 INFO L226 Difference]: Without dead ends: 167 [2023-11-19 04:13:02,935 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 [2023-11-19 04:13:02,939 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 771 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:02,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 221 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-19 04:13:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-11-19 04:13:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 160 states have (on average 1.23125) internal successors, (197), 166 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2023-11-19 04:13:02,986 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 45 [2023-11-19 04:13:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:02,987 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2023-11-19 04:13:02,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2023-11-19 04:13:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 04:13:02,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:02,990 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] [2023-11-19 04:13:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:13:02,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:02,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash -496068033, now seen corresponding path program 1 times [2023-11-19 04:13:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972469287] [2023-11-19 04:13:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:03,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:03,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972469287] [2023-11-19 04:13:03,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972469287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:03,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:13:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377768350] [2023-11-19 04:13:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:03,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:13:03,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:13:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:13:03,274 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:03,428 INFO L93 Difference]: Finished difference Result 275 states and 332 transitions. [2023-11-19 04:13:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:13:03,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-19 04:13:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:03,437 INFO L225 Difference]: With dead ends: 275 [2023-11-19 04:13:03,437 INFO L226 Difference]: Without dead ends: 151 [2023-11-19 04:13:03,441 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 [2023-11-19 04:13:03,443 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 496 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:03,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 115 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:13:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-19 04:13:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-19 04:13:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 150 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2023-11-19 04:13:03,460 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 46 [2023-11-19 04:13:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2023-11-19 04:13:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2023-11-19 04:13:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 04:13:03,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:03,464 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] [2023-11-19 04:13:03,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:13:03,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:03,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash -490260021, now seen corresponding path program 1 times [2023-11-19 04:13:03,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:03,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565162730] [2023-11-19 04:13:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:03,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:03,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565162730] [2023-11-19 04:13:03,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565162730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:03,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:03,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:13:03,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610071962] [2023-11-19 04:13:03,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:03,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:13:03,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:13:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:13:03,580 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:03,735 INFO L93 Difference]: Finished difference Result 328 states and 397 transitions. [2023-11-19 04:13:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:13:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-11-19 04:13:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:03,739 INFO L225 Difference]: With dead ends: 328 [2023-11-19 04:13:03,744 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 04:13:03,746 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 [2023-11-19 04:13:03,749 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 587 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:03,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 169 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:13:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 04:13:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 185. [2023-11-19 04:13:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 178 states have (on average 1.2752808988764044) internal successors, (227), 184 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 227 transitions. [2023-11-19 04:13:03,786 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 227 transitions. Word has length 47 [2023-11-19 04:13:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:03,786 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 227 transitions. [2023-11-19 04:13:03,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 227 transitions. [2023-11-19 04:13:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:13:03,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:03,794 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] [2023-11-19 04:13:03,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:13:03,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:03,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1960134064, now seen corresponding path program 1 times [2023-11-19 04:13:03,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:03,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949300542] [2023-11-19 04:13:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:03,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:04,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:04,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949300542] [2023-11-19 04:13:04,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949300542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:04,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:04,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:13:04,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168581175] [2023-11-19 04:13:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:04,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:04,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:04,319 INFO L87 Difference]: Start difference. First operand 185 states and 227 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:04,865 INFO L93 Difference]: Finished difference Result 410 states and 518 transitions. [2023-11-19 04:13:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:13:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-11-19 04:13:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:04,869 INFO L225 Difference]: With dead ends: 410 [2023-11-19 04:13:04,869 INFO L226 Difference]: Without dead ends: 405 [2023-11-19 04:13:04,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:13:04,871 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 585 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:04,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 689 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-19 04:13:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 185. [2023-11-19 04:13:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 184 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2023-11-19 04:13:04,884 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 48 [2023-11-19 04:13:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:04,884 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2023-11-19 04:13:04,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2023-11-19 04:13:04,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:13:04,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:04,891 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] [2023-11-19 04:13:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:13:04,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:04,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash -47936962, now seen corresponding path program 1 times [2023-11-19 04:13:04,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:04,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430569858] [2023-11-19 04:13:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:05,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430569858] [2023-11-19 04:13:05,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430569858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:05,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:05,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:13:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119322377] [2023-11-19 04:13:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:05,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:05,217 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:05,832 INFO L93 Difference]: Finished difference Result 387 states and 484 transitions. [2023-11-19 04:13:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:13:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-11-19 04:13:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:05,835 INFO L225 Difference]: With dead ends: 387 [2023-11-19 04:13:05,835 INFO L226 Difference]: Without dead ends: 316 [2023-11-19 04:13:05,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:13:05,837 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 710 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:05,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 551 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:13:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-19 04:13:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 185. [2023-11-19 04:13:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 178 states have (on average 1.2640449438202248) internal successors, (225), 184 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2023-11-19 04:13:05,847 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 48 [2023-11-19 04:13:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:05,847 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2023-11-19 04:13:05,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2023-11-19 04:13:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:13:05,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:05,849 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] [2023-11-19 04:13:05,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:13:05,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:05,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:05,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1498142210, now seen corresponding path program 1 times [2023-11-19 04:13:05,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:05,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479773722] [2023-11-19 04:13:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:05,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:06,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479773722] [2023-11-19 04:13:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479773722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:13:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085533477] [2023-11-19 04:13:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:06,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:13:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:13:06,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:13:06,127 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:06,401 INFO L93 Difference]: Finished difference Result 369 states and 452 transitions. [2023-11-19 04:13:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:13:06,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-11-19 04:13:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:06,405 INFO L225 Difference]: With dead ends: 369 [2023-11-19 04:13:06,405 INFO L226 Difference]: Without dead ends: 275 [2023-11-19 04:13:06,405 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 [2023-11-19 04:13:06,406 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 469 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:06,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 313 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-19 04:13:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 185. [2023-11-19 04:13:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 178 states have (on average 1.2584269662921348) internal successors, (224), 184 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2023-11-19 04:13:06,413 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 48 [2023-11-19 04:13:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:06,414 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2023-11-19 04:13:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2023-11-19 04:13:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:13:06,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:06,415 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] [2023-11-19 04:13:06,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:13:06,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:06,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:06,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2131378021, now seen corresponding path program 1 times [2023-11-19 04:13:06,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:06,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975099942] [2023-11-19 04:13:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:06,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:07,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975099942] [2023-11-19 04:13:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975099942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:07,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:13:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764550571] [2023-11-19 04:13:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:13:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:13:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:07,226 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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) [2023-11-19 04:13:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:08,146 INFO L93 Difference]: Finished difference Result 462 states and 563 transitions. [2023-11-19 04:13:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:13:08,147 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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 [2023-11-19 04:13:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:08,150 INFO L225 Difference]: With dead ends: 462 [2023-11-19 04:13:08,150 INFO L226 Difference]: Without dead ends: 458 [2023-11-19 04:13:08,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:13:08,151 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1037 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:08,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1085 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-19 04:13:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 181. [2023-11-19 04:13:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.2571428571428571) internal successors, (220), 180 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 220 transitions. [2023-11-19 04:13:08,160 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 220 transitions. Word has length 50 [2023-11-19 04:13:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:08,160 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 220 transitions. [2023-11-19 04:13:08,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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) [2023-11-19 04:13:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 220 transitions. [2023-11-19 04:13:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:13:08,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:08,161 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] [2023-11-19 04:13:08,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:13:08,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:08,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash -56699219, now seen corresponding path program 1 times [2023-11-19 04:13:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053397870] [2023-11-19 04:13:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:08,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053397870] [2023-11-19 04:13:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053397870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:08,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:08,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:13:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149893100] [2023-11-19 04:13:08,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:08,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:13:08,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:13:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:08,750 INFO L87 Difference]: Start difference. First operand 181 states and 220 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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) [2023-11-19 04:13:09,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:09,601 INFO L93 Difference]: Finished difference Result 515 states and 635 transitions. [2023-11-19 04:13:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 04:13:09,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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 [2023-11-19 04:13:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:09,606 INFO L225 Difference]: With dead ends: 515 [2023-11-19 04:13:09,606 INFO L226 Difference]: Without dead ends: 457 [2023-11-19 04:13:09,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:13:09,607 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 732 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:09,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1366 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-19 04:13:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 177. [2023-11-19 04:13:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.25) internal successors, (215), 176 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 215 transitions. [2023-11-19 04:13:09,617 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 215 transitions. Word has length 50 [2023-11-19 04:13:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:09,618 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 215 transitions. [2023-11-19 04:13:09,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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) [2023-11-19 04:13:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 215 transitions. [2023-11-19 04:13:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:13:09,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:09,620 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] [2023-11-19 04:13:09,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:13:09,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:09,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:09,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1837216367, now seen corresponding path program 1 times [2023-11-19 04:13:09,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:09,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096024614] [2023-11-19 04:13:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:09,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:10,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096024614] [2023-11-19 04:13:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096024614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:10,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:10,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:13:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583600100] [2023-11-19 04:13:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:10,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:13:10,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:10,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:13:10,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:10,279 INFO L87 Difference]: Start difference. First operand 177 states and 215 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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) [2023-11-19 04:13:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:11,000 INFO L93 Difference]: Finished difference Result 331 states and 415 transitions. [2023-11-19 04:13:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:13:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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 [2023-11-19 04:13:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:11,003 INFO L225 Difference]: With dead ends: 331 [2023-11-19 04:13:11,003 INFO L226 Difference]: Without dead ends: 266 [2023-11-19 04:13:11,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:13:11,005 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 436 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:11,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1100 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-19 04:13:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 166. [2023-11-19 04:13:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.2469135802469136) internal successors, (202), 165 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2023-11-19 04:13:11,012 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 50 [2023-11-19 04:13:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:11,013 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2023-11-19 04:13:11,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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) [2023-11-19 04:13:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2023-11-19 04:13:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 04:13:11,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:11,014 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] [2023-11-19 04:13:11,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:13:11,015 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:11,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash -932698590, now seen corresponding path program 1 times [2023-11-19 04:13:11,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:11,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274057615] [2023-11-19 04:13:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:11,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:11,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:11,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274057615] [2023-11-19 04:13:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274057615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:11,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:11,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:13:11,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723962489] [2023-11-19 04:13:11,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:11,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:11,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:11,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:11,368 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 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) [2023-11-19 04:13:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:11,724 INFO L93 Difference]: Finished difference Result 277 states and 338 transitions. [2023-11-19 04:13:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 04:13:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 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 [2023-11-19 04:13:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:11,727 INFO L225 Difference]: With dead ends: 277 [2023-11-19 04:13:11,727 INFO L226 Difference]: Without dead ends: 270 [2023-11-19 04:13:11,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:13:11,729 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 435 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:11,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 522 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-19 04:13:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2023-11-19 04:13:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.2407407407407407) internal successors, (201), 165 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 201 transitions. [2023-11-19 04:13:11,738 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 201 transitions. Word has length 51 [2023-11-19 04:13:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:11,739 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 201 transitions. [2023-11-19 04:13:11,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 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) [2023-11-19 04:13:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 201 transitions. [2023-11-19 04:13:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 04:13:11,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:11,740 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] [2023-11-19 04:13:11,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:13:11,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:11,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1469455582, now seen corresponding path program 1 times [2023-11-19 04:13:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:11,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796361528] [2023-11-19 04:13:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:11,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:11,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796361528] [2023-11-19 04:13:11,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796361528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:11,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:11,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:13:11,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465384059] [2023-11-19 04:13:11,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:11,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:11,996 INFO L87 Difference]: Start difference. First operand 166 states and 201 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 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) [2023-11-19 04:13:12,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:12,269 INFO L93 Difference]: Finished difference Result 253 states and 313 transitions. [2023-11-19 04:13:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 04:13:12,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 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 [2023-11-19 04:13:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:12,271 INFO L225 Difference]: With dead ends: 253 [2023-11-19 04:13:12,271 INFO L226 Difference]: Without dead ends: 169 [2023-11-19 04:13:12,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:13:12,273 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 423 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:12,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 289 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:13:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-19 04:13:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2023-11-19 04:13:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.228395061728395) internal successors, (199), 165 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 199 transitions. [2023-11-19 04:13:12,279 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 199 transitions. Word has length 51 [2023-11-19 04:13:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:12,279 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 199 transitions. [2023-11-19 04:13:12,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 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) [2023-11-19 04:13:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 199 transitions. [2023-11-19 04:13:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 04:13:12,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:12,281 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] [2023-11-19 04:13:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:13:12,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:12,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1042165086, now seen corresponding path program 1 times [2023-11-19 04:13:12,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:12,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015035529] [2023-11-19 04:13:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:12,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:12,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015035529] [2023-11-19 04:13:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015035529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 04:13:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071699540] [2023-11-19 04:13:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:12,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:13:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:13:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:13:12,765 INFO L87 Difference]: Start difference. First operand 166 states and 199 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2023-11-19 04:13:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:13,550 INFO L93 Difference]: Finished difference Result 397 states and 493 transitions. [2023-11-19 04:13:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 04:13:13,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 [2023-11-19 04:13:13,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:13,554 INFO L225 Difference]: With dead ends: 397 [2023-11-19 04:13:13,554 INFO L226 Difference]: Without dead ends: 390 [2023-11-19 04:13:13,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2023-11-19 04:13:13,555 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1002 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:13,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 584 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:13:13,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-19 04:13:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 170. [2023-11-19 04:13:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 1.2228915662650603) internal successors, (203), 169 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 203 transitions. [2023-11-19 04:13:13,563 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 203 transitions. Word has length 51 [2023-11-19 04:13:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:13,563 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 203 transitions. [2023-11-19 04:13:13,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2023-11-19 04:13:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 203 transitions. [2023-11-19 04:13:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 04:13:13,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:13,565 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] [2023-11-19 04:13:13,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 04:13:13,565 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:13,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash -310153583, now seen corresponding path program 1 times [2023-11-19 04:13:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829752128] [2023-11-19 04:13:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:13,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:13,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829752128] [2023-11-19 04:13:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829752128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:13,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:13:13,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706272107] [2023-11-19 04:13:13,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:13,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:13,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:13,859 INFO L87 Difference]: Start difference. First operand 170 states and 203 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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) [2023-11-19 04:13:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:14,207 INFO L93 Difference]: Finished difference Result 277 states and 334 transitions. [2023-11-19 04:13:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:13:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 [2023-11-19 04:13:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:14,210 INFO L225 Difference]: With dead ends: 277 [2023-11-19 04:13:14,210 INFO L226 Difference]: Without dead ends: 270 [2023-11-19 04:13:14,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:13:14,211 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 429 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:14,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 479 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-19 04:13:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2023-11-19 04:13:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.2222222222222223) internal successors, (198), 165 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2023-11-19 04:13:14,218 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 52 [2023-11-19 04:13:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:14,218 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2023-11-19 04:13:14,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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) [2023-11-19 04:13:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2023-11-19 04:13:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 04:13:14,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:14,227 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] [2023-11-19 04:13:14,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:13:14,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:14,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1554093006, now seen corresponding path program 1 times [2023-11-19 04:13:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682785590] [2023-11-19 04:13:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:14,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:15,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:15,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682785590] [2023-11-19 04:13:15,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682785590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:15,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:15,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-19 04:13:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298499719] [2023-11-19 04:13:15,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:15,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 04:13:15,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:15,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 04:13:15,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:13:15,157 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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) [2023-11-19 04:13:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:16,412 INFO L93 Difference]: Finished difference Result 294 states and 349 transitions. [2023-11-19 04:13:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 04:13:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 [2023-11-19 04:13:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:16,414 INFO L225 Difference]: With dead ends: 294 [2023-11-19 04:13:16,415 INFO L226 Difference]: Without dead ends: 286 [2023-11-19 04:13:16,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 04:13:16,416 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 448 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:16,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 2099 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:13:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-19 04:13:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 169. [2023-11-19 04:13:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 168 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2023-11-19 04:13:16,423 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 53 [2023-11-19 04:13:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:16,424 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2023-11-19 04:13:16,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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) [2023-11-19 04:13:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2023-11-19 04:13:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 04:13:16,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:16,425 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] [2023-11-19 04:13:16,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 04:13:16,426 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:16,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash 188086898, now seen corresponding path program 1 times [2023-11-19 04:13:16,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:16,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211982842] [2023-11-19 04:13:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:16,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:17,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211982842] [2023-11-19 04:13:17,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211982842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:17,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:17,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-19 04:13:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84342634] [2023-11-19 04:13:17,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:17,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 04:13:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:17,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 04:13:17,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:13:17,199 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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) [2023-11-19 04:13:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:18,307 INFO L93 Difference]: Finished difference Result 515 states and 647 transitions. [2023-11-19 04:13:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 04:13:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 [2023-11-19 04:13:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:18,310 INFO L225 Difference]: With dead ends: 515 [2023-11-19 04:13:18,310 INFO L226 Difference]: Without dead ends: 509 [2023-11-19 04:13:18,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:13:18,312 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 759 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:18,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1785 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:13:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-11-19 04:13:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 175. [2023-11-19 04:13:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.2222222222222223) internal successors, (209), 174 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 209 transitions. [2023-11-19 04:13:18,319 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 209 transitions. Word has length 53 [2023-11-19 04:13:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:18,320 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 209 transitions. [2023-11-19 04:13:18,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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) [2023-11-19 04:13:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 209 transitions. [2023-11-19 04:13:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 04:13:18,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:18,321 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] [2023-11-19 04:13:18,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 04:13:18,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:18,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash 622789362, now seen corresponding path program 1 times [2023-11-19 04:13:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:18,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646822810] [2023-11-19 04:13:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:19,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646822810] [2023-11-19 04:13:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646822810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:19,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-19 04:13:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740456126] [2023-11-19 04:13:19,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:19,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 04:13:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 04:13:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:13:19,210 INFO L87 Difference]: Start difference. First operand 175 states and 209 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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) [2023-11-19 04:13:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:20,229 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2023-11-19 04:13:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 04:13:20,230 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 [2023-11-19 04:13:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:20,232 INFO L225 Difference]: With dead ends: 205 [2023-11-19 04:13:20,232 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 04:13:20,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=782, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:13:20,233 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 353 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1380 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:13:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 04:13:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 180. [2023-11-19 04:13:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 176 states have (on average 1.2159090909090908) internal successors, (214), 179 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 214 transitions. [2023-11-19 04:13:20,240 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 214 transitions. Word has length 53 [2023-11-19 04:13:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:20,240 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 214 transitions. [2023-11-19 04:13:20,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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) [2023-11-19 04:13:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 214 transitions. [2023-11-19 04:13:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:13:20,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:20,241 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] [2023-11-19 04:13:20,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 04:13:20,242 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:20,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:20,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1916579593, now seen corresponding path program 1 times [2023-11-19 04:13:20,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:20,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698003283] [2023-11-19 04:13:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:20,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:21,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698003283] [2023-11-19 04:13:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698003283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:21,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:21,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 04:13:21,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004413106] [2023-11-19 04:13:21,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:21,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:13:21,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:13:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:13:21,361 INFO L87 Difference]: Start difference. First operand 180 states and 214 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 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) [2023-11-19 04:13:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:23,004 INFO L93 Difference]: Finished difference Result 630 states and 792 transitions. [2023-11-19 04:13:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 04:13:23,004 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 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 [2023-11-19 04:13:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:23,008 INFO L225 Difference]: With dead ends: 630 [2023-11-19 04:13:23,008 INFO L226 Difference]: Without dead ends: 624 [2023-11-19 04:13:23,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:13:23,010 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1280 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:23,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 2308 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:13:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-11-19 04:13:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 174. [2023-11-19 04:13:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.2058823529411764) internal successors, (205), 173 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2023-11-19 04:13:23,018 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 54 [2023-11-19 04:13:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:23,018 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2023-11-19 04:13:23,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 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) [2023-11-19 04:13:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2023-11-19 04:13:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:13:23,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:23,019 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] [2023-11-19 04:13:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 04:13:23,020 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:23,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash 59376147, now seen corresponding path program 1 times [2023-11-19 04:13:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291137369] [2023-11-19 04:13:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:23,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:23,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291137369] [2023-11-19 04:13:23,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291137369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:23,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:23,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:13:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497483349] [2023-11-19 04:13:23,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:23,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:13:23,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:13:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:23,665 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 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) [2023-11-19 04:13:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:24,241 INFO L93 Difference]: Finished difference Result 323 states and 397 transitions. [2023-11-19 04:13:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 04:13:24,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 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 [2023-11-19 04:13:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:24,244 INFO L225 Difference]: With dead ends: 323 [2023-11-19 04:13:24,244 INFO L226 Difference]: Without dead ends: 308 [2023-11-19 04:13:24,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:13:24,245 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 555 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:24,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1091 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-19 04:13:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 159. [2023-11-19 04:13:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.205128205128205) internal successors, (188), 158 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 188 transitions. [2023-11-19 04:13:24,252 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 188 transitions. Word has length 54 [2023-11-19 04:13:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:24,252 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 188 transitions. [2023-11-19 04:13:24,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 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) [2023-11-19 04:13:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 188 transitions. [2023-11-19 04:13:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:13:24,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:24,253 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] [2023-11-19 04:13:24,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 04:13:24,254 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:24,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:24,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1064905229, now seen corresponding path program 1 times [2023-11-19 04:13:24,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:24,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397457309] [2023-11-19 04:13:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:24,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:24,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:24,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397457309] [2023-11-19 04:13:24,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397457309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:24,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:24,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:13:24,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894514312] [2023-11-19 04:13:24,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:24,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:13:24,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:13:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:24,820 INFO L87 Difference]: Start difference. First operand 159 states and 188 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 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) [2023-11-19 04:13:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:25,947 INFO L93 Difference]: Finished difference Result 632 states and 804 transitions. [2023-11-19 04:13:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 04:13:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 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 [2023-11-19 04:13:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:25,952 INFO L225 Difference]: With dead ends: 632 [2023-11-19 04:13:25,952 INFO L226 Difference]: Without dead ends: 626 [2023-11-19 04:13:25,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-11-19 04:13:25,954 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 740 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:25,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1731 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:13:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-19 04:13:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 153. [2023-11-19 04:13:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.205298013245033) internal successors, (182), 152 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 182 transitions. [2023-11-19 04:13:25,964 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 182 transitions. Word has length 54 [2023-11-19 04:13:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:25,964 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 182 transitions. [2023-11-19 04:13:25,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 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) [2023-11-19 04:13:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 182 transitions. [2023-11-19 04:13:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:13:25,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:25,965 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] [2023-11-19 04:13:25,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 04:13:25,966 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:25,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1176747099, now seen corresponding path program 1 times [2023-11-19 04:13:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:25,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336838055] [2023-11-19 04:13:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:26,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:26,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336838055] [2023-11-19 04:13:26,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336838055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:26,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:26,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 04:13:26,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710473027] [2023-11-19 04:13:26,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 04:13:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 04:13:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:13:26,796 INFO L87 Difference]: Start difference. First operand 153 states and 182 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 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) [2023-11-19 04:13:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:27,625 INFO L93 Difference]: Finished difference Result 238 states and 285 transitions. [2023-11-19 04:13:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 04:13:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 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 [2023-11-19 04:13:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:27,627 INFO L225 Difference]: With dead ends: 238 [2023-11-19 04:13:27,627 INFO L226 Difference]: Without dead ends: 224 [2023-11-19 04:13:27,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:13:27,628 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 253 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:27,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 720 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-19 04:13:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 148. [2023-11-19 04:13:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2054794520547945) internal successors, (176), 147 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2023-11-19 04:13:27,635 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 54 [2023-11-19 04:13:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:27,635 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2023-11-19 04:13:27,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 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) [2023-11-19 04:13:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2023-11-19 04:13:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:13:27,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:27,636 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] [2023-11-19 04:13:27,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 04:13:27,637 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:27,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash -288792799, now seen corresponding path program 1 times [2023-11-19 04:13:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:27,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069241352] [2023-11-19 04:13:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:28,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069241352] [2023-11-19 04:13:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069241352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:28,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:28,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 04:13:28,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197814554] [2023-11-19 04:13:28,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:28,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:13:28,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:28,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:13:28,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:13:28,212 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2023-11-19 04:13:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:28,633 INFO L93 Difference]: Finished difference Result 238 states and 289 transitions. [2023-11-19 04:13:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:13:28,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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 [2023-11-19 04:13:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:28,636 INFO L225 Difference]: With dead ends: 238 [2023-11-19 04:13:28,636 INFO L226 Difference]: Without dead ends: 230 [2023-11-19 04:13:28,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:13:28,638 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 253 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:28,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 697 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-19 04:13:28,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 148. [2023-11-19 04:13:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 147 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2023-11-19 04:13:28,646 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 54 [2023-11-19 04:13:28,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:28,647 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2023-11-19 04:13:28,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2023-11-19 04:13:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2023-11-19 04:13:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 04:13:28,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:28,648 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] [2023-11-19 04:13:28,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 04:13:28,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:28,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:28,649 INFO L85 PathProgramCache]: Analyzing trace with hash 628976982, now seen corresponding path program 1 times [2023-11-19 04:13:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:28,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091116481] [2023-11-19 04:13:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:29,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:29,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091116481] [2023-11-19 04:13:29,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091116481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:29,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:29,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-19 04:13:29,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807567194] [2023-11-19 04:13:29,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:29,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 04:13:29,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 04:13:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:13:29,464 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 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) [2023-11-19 04:13:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:30,480 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2023-11-19 04:13:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 04:13:30,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 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 [2023-11-19 04:13:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:30,483 INFO L225 Difference]: With dead ends: 228 [2023-11-19 04:13:30,483 INFO L226 Difference]: Without dead ends: 210 [2023-11-19 04:13:30,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:13:30,485 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 309 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:30,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1134 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:13:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-19 04:13:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 130. [2023-11-19 04:13:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 129 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2023-11-19 04:13:30,491 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 55 [2023-11-19 04:13:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:30,491 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2023-11-19 04:13:30,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 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) [2023-11-19 04:13:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2023-11-19 04:13:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 04:13:30,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:30,493 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] [2023-11-19 04:13:30,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 04:13:30,493 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:30,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash -629718650, now seen corresponding path program 1 times [2023-11-19 04:13:30,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:30,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270579640] [2023-11-19 04:13:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:30,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:30,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:30,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270579640] [2023-11-19 04:13:30,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270579640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:30,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:30,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:13:30,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383352494] [2023-11-19 04:13:30,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:30,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:30,599 INFO L87 Difference]: Start difference. First operand 130 states and 157 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) [2023-11-19 04:13:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:30,626 INFO L93 Difference]: Finished difference Result 192 states and 241 transitions. [2023-11-19 04:13:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:30,627 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 [2023-11-19 04:13:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:30,628 INFO L225 Difference]: With dead ends: 192 [2023-11-19 04:13:30,628 INFO L226 Difference]: Without dead ends: 164 [2023-11-19 04:13:30,629 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 [2023-11-19 04:13:30,630 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 42 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:30,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 188 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:13:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-19 04:13:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 154. [2023-11-19 04:13:30,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.2352941176470589) internal successors, (189), 153 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2023-11-19 04:13:30,636 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 64 [2023-11-19 04:13:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:30,637 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2023-11-19 04:13:30,637 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) [2023-11-19 04:13:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2023-11-19 04:13:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:13:30,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:30,639 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] [2023-11-19 04:13:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 04:13:30,639 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:30,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1627130526, now seen corresponding path program 1 times [2023-11-19 04:13:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:30,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925720087] [2023-11-19 04:13:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:30,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:30,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:30,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925720087] [2023-11-19 04:13:30,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925720087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:30,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:30,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:13:30,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150538309] [2023-11-19 04:13:30,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:30,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:30,777 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:30,801 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2023-11-19 04:13:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:30,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 04:13:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:30,809 INFO L225 Difference]: With dead ends: 306 [2023-11-19 04:13:30,810 INFO L226 Difference]: Without dead ends: 230 [2023-11-19 04:13:30,810 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 [2023-11-19 04:13:30,812 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 35 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:30,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 188 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:13:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-19 04:13:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 216. [2023-11-19 04:13:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.2744186046511627) internal successors, (274), 215 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 274 transitions. [2023-11-19 04:13:30,820 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 274 transitions. Word has length 67 [2023-11-19 04:13:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:30,820 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 274 transitions. [2023-11-19 04:13:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 274 transitions. [2023-11-19 04:13:30,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 04:13:30,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:30,822 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] [2023-11-19 04:13:30,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-19 04:13:30,822 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:30,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash -958429519, now seen corresponding path program 1 times [2023-11-19 04:13:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:30,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469893905] [2023-11-19 04:13:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:30,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:30,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469893905] [2023-11-19 04:13:30,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469893905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:30,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:30,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:13:30,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152649274] [2023-11-19 04:13:30,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:30,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:30,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:30,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:30,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:30,935 INFO L87 Difference]: Start difference. First operand 216 states and 274 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:30,962 INFO L93 Difference]: Finished difference Result 492 states and 652 transitions. [2023-11-19 04:13:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:30,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-11-19 04:13:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:30,965 INFO L225 Difference]: With dead ends: 492 [2023-11-19 04:13:30,966 INFO L226 Difference]: Without dead ends: 354 [2023-11-19 04:13:30,966 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 [2023-11-19 04:13:30,967 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 25 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:30,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 188 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:13:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-19 04:13:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 328. [2023-11-19 04:13:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.3027522935779816) internal successors, (426), 327 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 426 transitions. [2023-11-19 04:13:30,978 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 426 transitions. Word has length 70 [2023-11-19 04:13:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:30,978 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 426 transitions. [2023-11-19 04:13:30,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 426 transitions. [2023-11-19 04:13:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 04:13:30,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:30,980 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] [2023-11-19 04:13:30,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-19 04:13:30,980 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:30,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1145699154, now seen corresponding path program 1 times [2023-11-19 04:13:30,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066166995] [2023-11-19 04:13:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:30,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:31,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:31,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066166995] [2023-11-19 04:13:31,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066166995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:31,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:31,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:13:31,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309041532] [2023-11-19 04:13:31,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:31,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:13:31,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:31,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:13:31,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:13:31,086 INFO L87 Difference]: Start difference. First operand 328 states and 426 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2023-11-19 04:13:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:31,189 INFO L93 Difference]: Finished difference Result 1102 states and 1470 transitions. [2023-11-19 04:13:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:13:31,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 [2023-11-19 04:13:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:31,200 INFO L225 Difference]: With dead ends: 1102 [2023-11-19 04:13:31,201 INFO L226 Difference]: Without dead ends: 852 [2023-11-19 04:13:31,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:31,202 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 292 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:31,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 382 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:13:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-11-19 04:13:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 488. [2023-11-19 04:13:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.3018480492813143) internal successors, (634), 487 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 634 transitions. [2023-11-19 04:13:31,239 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 634 transitions. Word has length 73 [2023-11-19 04:13:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:31,239 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 634 transitions. [2023-11-19 04:13:31,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2023-11-19 04:13:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 634 transitions. [2023-11-19 04:13:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 04:13:31,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:31,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:31,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-19 04:13:31,242 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:31,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1071527444, now seen corresponding path program 1 times [2023-11-19 04:13:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711481819] [2023-11-19 04:13:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:31,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711481819] [2023-11-19 04:13:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711481819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:31,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:31,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:13:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928724549] [2023-11-19 04:13:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:31,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:13:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:31,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:13:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:13:31,414 INFO L87 Difference]: Start difference. First operand 488 states and 634 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2023-11-19 04:13:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:31,485 INFO L93 Difference]: Finished difference Result 900 states and 1184 transitions. [2023-11-19 04:13:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:13:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 75 [2023-11-19 04:13:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:31,489 INFO L225 Difference]: With dead ends: 900 [2023-11-19 04:13:31,490 INFO L226 Difference]: Without dead ends: 490 [2023-11-19 04:13:31,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:13:31,491 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 52 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:31,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 159 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:13:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-19 04:13:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 488. [2023-11-19 04:13:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.297741273100616) internal successors, (632), 487 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 632 transitions. [2023-11-19 04:13:31,517 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 632 transitions. Word has length 75 [2023-11-19 04:13:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:31,518 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 632 transitions. [2023-11-19 04:13:31,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2023-11-19 04:13:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 632 transitions. [2023-11-19 04:13:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 04:13:31,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:31,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:31,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-19 04:13:31,522 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:31,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash 331787123, now seen corresponding path program 1 times [2023-11-19 04:13:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590474444] [2023-11-19 04:13:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:31,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590474444] [2023-11-19 04:13:31,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590474444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:31,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:31,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:13:31,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921279152] [2023-11-19 04:13:31,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:31,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:31,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:31,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:31,596 INFO L87 Difference]: Start difference. First operand 488 states and 632 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-11-19 04:13:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:31,633 INFO L93 Difference]: Finished difference Result 996 states and 1312 transitions. [2023-11-19 04:13:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:31,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 75 [2023-11-19 04:13:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:31,637 INFO L225 Difference]: With dead ends: 996 [2023-11-19 04:13:31,638 INFO L226 Difference]: Without dead ends: 586 [2023-11-19 04:13:31,638 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 [2023-11-19 04:13:31,639 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 51 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:31,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 142 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:13:31,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-19 04:13:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2023-11-19 04:13:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.2933104631217838) internal successors, (754), 583 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 754 transitions. [2023-11-19 04:13:31,656 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 754 transitions. Word has length 75 [2023-11-19 04:13:31,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:31,656 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 754 transitions. [2023-11-19 04:13:31,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-11-19 04:13:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 754 transitions. [2023-11-19 04:13:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 04:13:31,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:31,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:31,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-19 04:13:31,659 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:31,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1201555210, now seen corresponding path program 1 times [2023-11-19 04:13:31,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:31,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799301536] [2023-11-19 04:13:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:31,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:31,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:31,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799301536] [2023-11-19 04:13:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799301536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:31,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:31,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:13:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618867563] [2023-11-19 04:13:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:13:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:13:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:13:31,877 INFO L87 Difference]: Start difference. First operand 584 states and 754 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:31,960 INFO L93 Difference]: Finished difference Result 882 states and 1122 transitions. [2023-11-19 04:13:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:13:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 04:13:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:31,965 INFO L225 Difference]: With dead ends: 882 [2023-11-19 04:13:31,966 INFO L226 Difference]: Without dead ends: 880 [2023-11-19 04:13:31,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:13:31,972 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 128 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:31,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 482 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:13:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-11-19 04:13:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 608. [2023-11-19 04:13:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 1.2619439868204283) internal successors, (766), 607 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 766 transitions. [2023-11-19 04:13:31,995 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 766 transitions. Word has length 76 [2023-11-19 04:13:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:31,996 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 766 transitions. [2023-11-19 04:13:31,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 766 transitions. [2023-11-19 04:13:31,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 04:13:31,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:31,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:31,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-19 04:13:31,998 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:31,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1867061001, now seen corresponding path program 1 times [2023-11-19 04:13:31,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911030434] [2023-11-19 04:13:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:13:32,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911030434] [2023-11-19 04:13:32,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911030434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:32,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:32,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 04:13:32,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425046824] [2023-11-19 04:13:32,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:32,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:13:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:32,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:13:32,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:13:32,543 INFO L87 Difference]: Start difference. First operand 608 states and 766 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:33,691 INFO L93 Difference]: Finished difference Result 2652 states and 3357 transitions. [2023-11-19 04:13:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 04:13:33,692 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-19 04:13:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:33,706 INFO L225 Difference]: With dead ends: 2652 [2023-11-19 04:13:33,706 INFO L226 Difference]: Without dead ends: 2108 [2023-11-19 04:13:33,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:13:33,709 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1170 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:33,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 637 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:13:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2023-11-19 04:13:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 616. [2023-11-19 04:13:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.2585365853658537) internal successors, (774), 615 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 774 transitions. [2023-11-19 04:13:33,759 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 774 transitions. Word has length 87 [2023-11-19 04:13:33,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:33,759 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 774 transitions. [2023-11-19 04:13:33,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 774 transitions. [2023-11-19 04:13:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 04:13:33,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:33,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-19 04:13:33,762 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:33,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1302105166, now seen corresponding path program 1 times [2023-11-19 04:13:33,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:33,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217565165] [2023-11-19 04:13:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:13:34,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217565165] [2023-11-19 04:13:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217565165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:34,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:34,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:13:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865922525] [2023-11-19 04:13:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:34,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:34,035 INFO L87 Difference]: Start difference. First operand 616 states and 774 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:34,383 INFO L93 Difference]: Finished difference Result 1520 states and 1923 transitions. [2023-11-19 04:13:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:13:34,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 88 [2023-11-19 04:13:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:34,389 INFO L225 Difference]: With dead ends: 1520 [2023-11-19 04:13:34,391 INFO L226 Difference]: Without dead ends: 976 [2023-11-19 04:13:34,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:13:34,393 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 338 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:34,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 268 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:13:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-11-19 04:13:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 608. [2023-11-19 04:13:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 1.2586490939044481) internal successors, (764), 607 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 764 transitions. [2023-11-19 04:13:34,414 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 764 transitions. Word has length 88 [2023-11-19 04:13:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:34,415 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 764 transitions. [2023-11-19 04:13:34,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 764 transitions. [2023-11-19 04:13:34,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 04:13:34,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:34,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:34,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-19 04:13:34,417 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:34,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:34,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1995824569, now seen corresponding path program 1 times [2023-11-19 04:13:34,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:34,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648751421] [2023-11-19 04:13:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:13:35,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:35,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648751421] [2023-11-19 04:13:35,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648751421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:35,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-19 04:13:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417538649] [2023-11-19 04:13:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 04:13:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 04:13:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:13:35,223 INFO L87 Difference]: Start difference. First operand 608 states and 764 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:35,953 INFO L93 Difference]: Finished difference Result 1692 states and 2151 transitions. [2023-11-19 04:13:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 04:13:35,953 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-19 04:13:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:35,960 INFO L225 Difference]: With dead ends: 1692 [2023-11-19 04:13:35,960 INFO L226 Difference]: Without dead ends: 1153 [2023-11-19 04:13:35,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-11-19 04:13:35,963 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 241 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:35,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1253 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:13:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2023-11-19 04:13:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 613. [2023-11-19 04:13:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.2565359477124183) internal successors, (769), 612 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 769 transitions. [2023-11-19 04:13:35,989 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 769 transitions. Word has length 89 [2023-11-19 04:13:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:35,989 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 769 transitions. [2023-11-19 04:13:35,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 769 transitions. [2023-11-19 04:13:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 04:13:35,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:35,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:35,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-19 04:13:35,992 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 04:13:35,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash 542464588, now seen corresponding path program 1 times [2023-11-19 04:13:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:35,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656027224] [2023-11-19 04:13:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:35,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:38,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:38,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656027224] [2023-11-19 04:13:38,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656027224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:13:38,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335350440] [2023-11-19 04:13:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:38,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:38,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:38,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:38,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3519-28c3-4432-87da-4651e65451cd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:13:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:38,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 04:13:38,900 INFO L285 TraceCheckSpWp]: Computing forward predicates...