./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/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 afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:21,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:21,344 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:21:21,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:21,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:21,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:21,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:21,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:21,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:21,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:21,416 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:21,417 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:21,418 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:21,420 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:21,420 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:21,431 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:21,431 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:21,432 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:21,432 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:21,433 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:21,433 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:21,434 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:21,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:21,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:21,436 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:21:21,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:21,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:21:21,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:21,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:21,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:21,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:21,439 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:21:21,439 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:21,440 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:21,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:21,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:21,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:21,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:21,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:21,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:21:21,442 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:21,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:21,442 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:21:21,443 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:21,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:21,443 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 [2023-11-19 05:21:21,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:21,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:21,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:21,790 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:21,791 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:21,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-19 05:21:25,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:25,643 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:25,644 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-19 05:21:25,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/data/695a7d048/84df6ce0164a46f380e7076cd8ddcc90/FLAG318e95916 [2023-11-19 05:21:25,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/data/695a7d048/84df6ce0164a46f380e7076cd8ddcc90 [2023-11-19 05:21:25,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:25,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:25,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:25,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:25,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:25,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:25" (1/1) ... [2023-11-19 05:21:25,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73261809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:25, skipping insertion in model container [2023-11-19 05:21:25,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:25" (1/1) ... [2023-11-19 05:21:25,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:26,231 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-11-19 05:21:26,285 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-11-19 05:21:26,307 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-11-19 05:21:26,316 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-11-19 05:21:26,358 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-11-19 05:21:26,381 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-11-19 05:21:26,411 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-11-19 05:21:27,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:27,092 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:21:27,175 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-11-19 05:21:27,214 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-11-19 05:21:27,224 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-11-19 05:21:27,229 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-11-19 05:21:27,241 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-11-19 05:21:27,245 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-11-19 05:21:27,254 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_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-11-19 05:21:27,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:27,692 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:21:27,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27 WrapperNode [2023-11-19 05:21:27,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:27,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:27,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:21:27,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:21:27,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,937 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7671 [2023-11-19 05:21:27,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:27,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:21:27,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:21:27,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:21:27,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:21:28,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:21:28,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:21:28,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:21:28,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:28,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:21:28,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a2a4dd-9a34-43ba-b652-7a6d12000bbe/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:21:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:21:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:21:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:21:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:21:28,634 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:21:28,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:21:32,254 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:21:32,651 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:21:32,651 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:21:32,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:32 BoogieIcfgContainer [2023-11-19 05:21:32,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:21:32,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:21:32,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:21:32,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:21:32,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:25" (1/3) ... [2023-11-19 05:21:32,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e153a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:32, skipping insertion in model container [2023-11-19 05:21:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (2/3) ... [2023-11-19 05:21:32,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e153a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:32, skipping insertion in model container [2023-11-19 05:21:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:32" (3/3) ... [2023-11-19 05:21:32,674 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-19 05:21:32,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:21:32,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-19 05:21:32,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:32,782 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;@7fc51971, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:32,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 05:21:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 1059 states, 1051 states have (on average 1.8924833491912465) internal successors, (1989), 1058 states have internal predecessors, (1989), 0 states have call successors, (0), 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 05:21:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:21:32,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:32,817 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] [2023-11-19 05:21:32,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:32,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:32,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1184813438, now seen corresponding path program 1 times [2023-11-19 05:21:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569830566] [2023-11-19 05:21:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:33,381 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 05:21:33,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:33,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569830566] [2023-11-19 05:21:33,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569830566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:33,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645139734] [2023-11-19 05:21:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:33,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:33,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:33,450 INFO L87 Difference]: Start difference. First operand has 1059 states, 1051 states have (on average 1.8924833491912465) internal successors, (1989), 1058 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:33,830 INFO L93 Difference]: Finished difference Result 1348 states and 2449 transitions. [2023-11-19 05:21:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-19 05:21:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:33,877 INFO L225 Difference]: With dead ends: 1348 [2023-11-19 05:21:33,884 INFO L226 Difference]: Without dead ends: 1214 [2023-11-19 05:21:33,890 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 05:21:33,895 INFO L413 NwaCegarLoop]: 1962 mSDtfsCounter, 921 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:33,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 3150 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-11-19 05:21:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1206. [2023-11-19 05:21:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1199 states have (on average 1.291909924937448) internal successors, (1549), 1205 states have internal predecessors, (1549), 0 states have call successors, (0), 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 05:21:34,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1549 transitions. [2023-11-19 05:21:34,024 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1549 transitions. Word has length 63 [2023-11-19 05:21:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:34,025 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1549 transitions. [2023-11-19 05:21:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1549 transitions. [2023-11-19 05:21:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:21:34,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:34,031 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] [2023-11-19 05:21:34,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:21:34,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:34,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2003436219, now seen corresponding path program 1 times [2023-11-19 05:21:34,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595101062] [2023-11-19 05:21:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:34,395 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 05:21:34,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:34,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595101062] [2023-11-19 05:21:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595101062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:34,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:34,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912772462] [2023-11-19 05:21:34,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:34,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:34,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:34,406 INFO L87 Difference]: Start difference. First operand 1206 states and 1549 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:34,539 INFO L93 Difference]: Finished difference Result 1737 states and 2289 transitions. [2023-11-19 05:21:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:34,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-19 05:21:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:34,549 INFO L225 Difference]: With dead ends: 1737 [2023-11-19 05:21:34,550 INFO L226 Difference]: Without dead ends: 1456 [2023-11-19 05:21:34,556 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 05:21:34,558 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 672 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:34,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 2130 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-11-19 05:21:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1448. [2023-11-19 05:21:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1441 states have (on average 1.3095072866065232) internal successors, (1887), 1447 states have internal predecessors, (1887), 0 states have call successors, (0), 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 05:21:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1887 transitions. [2023-11-19 05:21:34,622 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1887 transitions. Word has length 63 [2023-11-19 05:21:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:34,623 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1887 transitions. [2023-11-19 05:21:34,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1887 transitions. [2023-11-19 05:21:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:21:34,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:34,630 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] [2023-11-19 05:21:34,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:21:34,632 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 05:21:34,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1542392687, now seen corresponding path program 1 times [2023-11-19 05:21:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:34,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275596590] [2023-11-19 05:21:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:34,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:35,037 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 05:21:35,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275596590] [2023-11-19 05:21:35,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275596590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:35,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:35,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670303325] [2023-11-19 05:21:35,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:35,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:35,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:35,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:35,042 INFO L87 Difference]: Start difference. First operand 1448 states and 1887 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:35,881 INFO L93 Difference]: Finished difference Result 2715 states and 3620 transitions. [2023-11-19 05:21:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:21:35,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-19 05:21:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:35,894 INFO L225 Difference]: With dead ends: 2715 [2023-11-19 05:21:35,900 INFO L226 Difference]: Without dead ends: 1575 [2023-11-19 05:21:35,902 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 05:21:35,905 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 3208 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3208 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:35,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3208 Valid, 760 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:21:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2023-11-19 05:21:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1567. [2023-11-19 05:21:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1560 states have (on average 1.3429487179487178) internal successors, (2095), 1566 states have internal predecessors, (2095), 0 states have call successors, (0), 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 05:21:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2095 transitions. [2023-11-19 05:21:35,949 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2095 transitions. Word has length 63 [2023-11-19 05:21:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:35,950 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2095 transitions. [2023-11-19 05:21:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2095 transitions. [2023-11-19 05:21:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 05:21:35,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:35,954 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 05:21:35,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:21:35,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:35,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1152487412, now seen corresponding path program 1 times [2023-11-19 05:21:35,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:35,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801874298] [2023-11-19 05:21:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:36,129 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 05:21:36,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801874298] [2023-11-19 05:21:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801874298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:36,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:36,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912354708] [2023-11-19 05:21:36,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:36,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:36,136 INFO L87 Difference]: Start difference. First operand 1567 states and 2095 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 05:21:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:36,227 INFO L93 Difference]: Finished difference Result 3538 states and 4810 transitions. [2023-11-19 05:21:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:36,228 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 05:21:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:36,242 INFO L225 Difference]: With dead ends: 3538 [2023-11-19 05:21:36,242 INFO L226 Difference]: Without dead ends: 2573 [2023-11-19 05:21:36,244 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 05:21:36,252 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 852 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:36,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1955 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2023-11-19 05:21:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2565. [2023-11-19 05:21:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2558 states have (on average 1.3444096950742768) internal successors, (3439), 2564 states have internal predecessors, (3439), 0 states have call successors, (0), 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 05:21:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3439 transitions. [2023-11-19 05:21:36,326 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3439 transitions. Word has length 64 [2023-11-19 05:21:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:36,328 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 3439 transitions. [2023-11-19 05:21:36,328 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 05:21:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3439 transitions. [2023-11-19 05:21:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 05:21:36,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:36,334 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 05:21:36,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:21:36,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:36,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash -998210018, now seen corresponding path program 1 times [2023-11-19 05:21:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39153249] [2023-11-19 05:21:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:36,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:36,551 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 05:21:36,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39153249] [2023-11-19 05:21:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39153249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:36,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178340264] [2023-11-19 05:21:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:36,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:36,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:36,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:36,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:36,554 INFO L87 Difference]: Start difference. First operand 2565 states and 3439 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 05:21:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:37,308 INFO L93 Difference]: Finished difference Result 5263 states and 7132 transitions. [2023-11-19 05:21:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:21:37,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 05:21:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:37,326 INFO L225 Difference]: With dead ends: 5263 [2023-11-19 05:21:37,326 INFO L226 Difference]: Without dead ends: 3302 [2023-11-19 05:21:37,331 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 05:21:37,332 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2780 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:37,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2780 Valid, 597 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:21:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2023-11-19 05:21:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3294. [2023-11-19 05:21:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3287 states have (on average 1.3383024034073623) internal successors, (4399), 3293 states have internal predecessors, (4399), 0 states have call successors, (0), 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 05:21:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4399 transitions. [2023-11-19 05:21:37,434 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4399 transitions. Word has length 64 [2023-11-19 05:21:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:37,434 INFO L495 AbstractCegarLoop]: Abstraction has 3294 states and 4399 transitions. [2023-11-19 05:21:37,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 05:21:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4399 transitions. [2023-11-19 05:21:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 05:21:37,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:37,440 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 05:21:37,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:21:37,440 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 05:21:37,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1760122824, now seen corresponding path program 1 times [2023-11-19 05:21:37,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:37,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009914028] [2023-11-19 05:21:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:37,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:37,637 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 05:21:37,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009914028] [2023-11-19 05:21:37,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009914028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:37,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:37,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:37,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481916380] [2023-11-19 05:21:37,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:37,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:37,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:37,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:37,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:37,641 INFO L87 Difference]: Start difference. First operand 3294 states and 4399 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 05:21:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:38,222 INFO L93 Difference]: Finished difference Result 7715 states and 10483 transitions. [2023-11-19 05:21:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:21:38,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 05:21:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:38,249 INFO L225 Difference]: With dead ends: 7715 [2023-11-19 05:21:38,249 INFO L226 Difference]: Without dead ends: 4854 [2023-11-19 05:21:38,253 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 05:21:38,254 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2462 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:38,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 573 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:21:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2023-11-19 05:21:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 4846. [2023-11-19 05:21:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 4839 states have (on average 1.3533787972721636) internal successors, (6549), 4845 states have internal predecessors, (6549), 0 states have call successors, (0), 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 05:21:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 6549 transitions. [2023-11-19 05:21:38,394 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 6549 transitions. Word has length 64 [2023-11-19 05:21:38,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:38,395 INFO L495 AbstractCegarLoop]: Abstraction has 4846 states and 6549 transitions. [2023-11-19 05:21:38,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 05:21:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 6549 transitions. [2023-11-19 05:21:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:21:38,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:38,401 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] [2023-11-19 05:21:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:21:38,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:38,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1332635061, now seen corresponding path program 1 times [2023-11-19 05:21:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203094790] [2023-11-19 05:21:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:38,569 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 05:21:38,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:38,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203094790] [2023-11-19 05:21:38,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203094790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:38,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:38,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:38,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333428512] [2023-11-19 05:21:38,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:38,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:38,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:38,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:38,571 INFO L87 Difference]: Start difference. First operand 4846 states and 6549 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 05:21:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:39,085 INFO L93 Difference]: Finished difference Result 12804 states and 17488 transitions. [2023-11-19 05:21:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:21:39,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-19 05:21:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:39,127 INFO L225 Difference]: With dead ends: 12804 [2023-11-19 05:21:39,127 INFO L226 Difference]: Without dead ends: 8196 [2023-11-19 05:21:39,134 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 05:21:39,135 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2065 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:39,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 508 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:21:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8196 states. [2023-11-19 05:21:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8196 to 8188. [2023-11-19 05:21:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8181 states have (on average 1.3539909546510207) internal successors, (11077), 8187 states have internal predecessors, (11077), 0 states have call successors, (0), 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 05:21:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 11077 transitions. [2023-11-19 05:21:39,403 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 11077 transitions. Word has length 65 [2023-11-19 05:21:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:39,403 INFO L495 AbstractCegarLoop]: Abstraction has 8188 states and 11077 transitions. [2023-11-19 05:21:39,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 05:21:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 11077 transitions. [2023-11-19 05:21:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:21:39,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:39,412 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] [2023-11-19 05:21:39,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:21:39,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:39,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash -254635222, now seen corresponding path program 1 times [2023-11-19 05:21:39,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:39,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86327912] [2023-11-19 05:21:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:39,536 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 05:21:39,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:39,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86327912] [2023-11-19 05:21:39,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86327912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:39,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:39,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:39,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459739492] [2023-11-19 05:21:39,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:39,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:39,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:39,539 INFO L87 Difference]: Start difference. First operand 8188 states and 11077 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:39,679 INFO L93 Difference]: Finished difference Result 20818 states and 28288 transitions. [2023-11-19 05:21:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 05:21:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:39,731 INFO L225 Difference]: With dead ends: 20818 [2023-11-19 05:21:39,731 INFO L226 Difference]: Without dead ends: 13787 [2023-11-19 05:21:39,741 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 05:21:39,742 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 456 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:39,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1185 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13787 states. [2023-11-19 05:21:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13787 to 13779. [2023-11-19 05:21:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13772 states have (on average 1.3427243682834737) internal successors, (18492), 13778 states have internal predecessors, (18492), 0 states have call successors, (0), 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 05:21:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 18492 transitions. [2023-11-19 05:21:40,197 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 18492 transitions. Word has length 66 [2023-11-19 05:21:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:40,197 INFO L495 AbstractCegarLoop]: Abstraction has 13779 states and 18492 transitions. [2023-11-19 05:21:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 18492 transitions. [2023-11-19 05:21:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:21:40,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:40,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:21:40,214 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:40,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2145810939, now seen corresponding path program 1 times [2023-11-19 05:21:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619938943] [2023-11-19 05:21:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:40,445 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 05:21:40,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:40,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619938943] [2023-11-19 05:21:40,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619938943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:40,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:40,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:21:40,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562581835] [2023-11-19 05:21:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:40,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:40,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:40,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:40,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:40,448 INFO L87 Difference]: Start difference. First operand 13779 states and 18492 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:41,608 INFO L93 Difference]: Finished difference Result 71170 states and 96948 transitions. [2023-11-19 05:21:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:21:41,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 05:21:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:41,934 INFO L225 Difference]: With dead ends: 71170 [2023-11-19 05:21:41,934 INFO L226 Difference]: Without dead ends: 65374 [2023-11-19 05:21:41,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:21:41,976 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 4174 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:41,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4174 Valid, 945 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:21:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65374 states. [2023-11-19 05:21:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65374 to 13847. [2023-11-19 05:21:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13847 states, 13840 states have (on average 1.342485549132948) internal successors, (18580), 13846 states have internal predecessors, (18580), 0 states have call successors, (0), 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 05:21:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13847 states to 13847 states and 18580 transitions. [2023-11-19 05:21:42,864 INFO L78 Accepts]: Start accepts. Automaton has 13847 states and 18580 transitions. Word has length 67 [2023-11-19 05:21:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:42,864 INFO L495 AbstractCegarLoop]: Abstraction has 13847 states and 18580 transitions. [2023-11-19 05:21:42,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 13847 states and 18580 transitions. [2023-11-19 05:21:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:21:42,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:42,874 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 05:21:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:21:42,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:42,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2044326195, now seen corresponding path program 1 times [2023-11-19 05:21:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924871511] [2023-11-19 05:21:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:42,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:43,168 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 05:21:43,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:43,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924871511] [2023-11-19 05:21:43,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924871511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:43,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:43,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:21:43,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715326773] [2023-11-19 05:21:43,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:43,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:43,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:43,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:43,172 INFO L87 Difference]: Start difference. First operand 13847 states and 18580 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:44,301 INFO L93 Difference]: Finished difference Result 64574 states and 87598 transitions. [2023-11-19 05:21:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:21:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 05:21:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:44,425 INFO L225 Difference]: With dead ends: 64574 [2023-11-19 05:21:44,425 INFO L226 Difference]: Without dead ends: 58850 [2023-11-19 05:21:44,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:21:44,449 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 3823 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:44,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 937 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:21:44,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58850 states. [2023-11-19 05:21:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58850 to 14003. [2023-11-19 05:21:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14003 states, 13996 states have (on average 1.3422406401829095) internal successors, (18786), 14002 states have internal predecessors, (18786), 0 states have call successors, (0), 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 05:21:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14003 states to 14003 states and 18786 transitions. [2023-11-19 05:21:45,286 INFO L78 Accepts]: Start accepts. Automaton has 14003 states and 18786 transitions. Word has length 67 [2023-11-19 05:21:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:45,287 INFO L495 AbstractCegarLoop]: Abstraction has 14003 states and 18786 transitions. [2023-11-19 05:21:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 14003 states and 18786 transitions. [2023-11-19 05:21:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:21:45,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:45,297 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 05:21:45,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:21:45,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:45,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1189983517, now seen corresponding path program 1 times [2023-11-19 05:21:45,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:45,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359486341] [2023-11-19 05:21:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:45,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:45,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:45,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359486341] [2023-11-19 05:21:45,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359486341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:45,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:45,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:21:45,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32444100] [2023-11-19 05:21:45,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:45,608 INFO L87 Difference]: Start difference. First operand 14003 states and 18786 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:46,835 INFO L93 Difference]: Finished difference Result 57224 states and 77306 transitions. [2023-11-19 05:21:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:21:46,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 05:21:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:46,945 INFO L225 Difference]: With dead ends: 57224 [2023-11-19 05:21:46,946 INFO L226 Difference]: Without dead ends: 51866 [2023-11-19 05:21:46,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:21:46,965 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2889 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:46,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 1024 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:21:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51866 states. [2023-11-19 05:21:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51866 to 14074. [2023-11-19 05:21:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 14067 states have (on average 1.342503732139049) internal successors, (18885), 14073 states have internal predecessors, (18885), 0 states have call successors, (0), 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 05:21:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 18885 transitions. [2023-11-19 05:21:47,569 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 18885 transitions. Word has length 67 [2023-11-19 05:21:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:47,570 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 18885 transitions. [2023-11-19 05:21:47,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 18885 transitions. [2023-11-19 05:21:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:21:47,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:47,583 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 05:21:47,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:21:47,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:47,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash -92881536, now seen corresponding path program 1 times [2023-11-19 05:21:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974183752] [2023-11-19 05:21:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:47,801 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 05:21:47,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:47,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974183752] [2023-11-19 05:21:47,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974183752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:47,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:47,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:21:47,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420840228] [2023-11-19 05:21:47,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:47,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:47,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:47,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:47,805 INFO L87 Difference]: Start difference. First operand 14074 states and 18885 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:48,886 INFO L93 Difference]: Finished difference Result 52840 states and 70924 transitions. [2023-11-19 05:21:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:21:48,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 05:21:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:48,961 INFO L225 Difference]: With dead ends: 52840 [2023-11-19 05:21:48,961 INFO L226 Difference]: Without dead ends: 47022 [2023-11-19 05:21:48,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:21:48,977 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 3776 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:48,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3776 Valid, 901 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:21:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47022 states. [2023-11-19 05:21:49,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47022 to 14109. [2023-11-19 05:21:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14109 states, 14102 states have (on average 1.3423627854205078) internal successors, (18930), 14108 states have internal predecessors, (18930), 0 states have call successors, (0), 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 05:21:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14109 states to 14109 states and 18930 transitions. [2023-11-19 05:21:49,457 INFO L78 Accepts]: Start accepts. Automaton has 14109 states and 18930 transitions. Word has length 67 [2023-11-19 05:21:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:49,457 INFO L495 AbstractCegarLoop]: Abstraction has 14109 states and 18930 transitions. [2023-11-19 05:21:49,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 14109 states and 18930 transitions. [2023-11-19 05:21:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:21:49,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:49,469 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] [2023-11-19 05:21:49,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:21:49,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:49,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:49,471 INFO L85 PathProgramCache]: Analyzing trace with hash 680595235, now seen corresponding path program 1 times [2023-11-19 05:21:49,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:49,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600860436] [2023-11-19 05:21:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:49,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:49,809 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 05:21:49,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600860436] [2023-11-19 05:21:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600860436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:49,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:49,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:21:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353451553] [2023-11-19 05:21:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:49,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:21:49,812 INFO L87 Difference]: Start difference. First operand 14109 states and 18930 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:50,837 INFO L93 Difference]: Finished difference Result 36177 states and 48772 transitions. [2023-11-19 05:21:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:21:50,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-19 05:21:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:50,875 INFO L225 Difference]: With dead ends: 36177 [2023-11-19 05:21:50,875 INFO L226 Difference]: Without dead ends: 24955 [2023-11-19 05:21:50,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:21:50,893 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 2464 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2464 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:50,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2464 Valid, 1219 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:21:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24955 states. [2023-11-19 05:21:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24955 to 13807. [2023-11-19 05:21:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13807 states, 13800 states have (on average 1.3408695652173912) internal successors, (18504), 13806 states have internal predecessors, (18504), 0 states have call successors, (0), 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 05:21:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13807 states to 13807 states and 18504 transitions. [2023-11-19 05:21:51,272 INFO L78 Accepts]: Start accepts. Automaton has 13807 states and 18504 transitions. Word has length 68 [2023-11-19 05:21:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:51,273 INFO L495 AbstractCegarLoop]: Abstraction has 13807 states and 18504 transitions. [2023-11-19 05:21:51,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13807 states and 18504 transitions. [2023-11-19 05:21:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:21:51,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:51,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:51,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 05:21:51,282 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:51,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash 718017329, now seen corresponding path program 1 times [2023-11-19 05:21:51,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:51,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550333102] [2023-11-19 05:21:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:51,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:51,796 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 05:21:51,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:51,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550333102] [2023-11-19 05:21:51,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550333102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:51,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:21:51,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393768027] [2023-11-19 05:21:51,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:51,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:21:51,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:51,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:21:51,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:21:51,800 INFO L87 Difference]: Start difference. First operand 13807 states and 18504 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:53,271 INFO L93 Difference]: Finished difference Result 41466 states and 55789 transitions. [2023-11-19 05:21:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:21:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-19 05:21:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:53,320 INFO L225 Difference]: With dead ends: 41466 [2023-11-19 05:21:53,320 INFO L226 Difference]: Without dead ends: 30702 [2023-11-19 05:21:53,339 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 05:21:53,339 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2065 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:53,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 2148 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:21:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30702 states. [2023-11-19 05:21:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30702 to 13676. [2023-11-19 05:21:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13676 states, 13669 states have (on average 1.3404052966566684) internal successors, (18322), 13675 states have internal predecessors, (18322), 0 states have call successors, (0), 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 05:21:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13676 states to 13676 states and 18322 transitions. [2023-11-19 05:21:53,764 INFO L78 Accepts]: Start accepts. Automaton has 13676 states and 18322 transitions. Word has length 68 [2023-11-19 05:21:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:53,764 INFO L495 AbstractCegarLoop]: Abstraction has 13676 states and 18322 transitions. [2023-11-19 05:21:53,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13676 states and 18322 transitions. [2023-11-19 05:21:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:21:53,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:53,775 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] [2023-11-19 05:21:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 05:21:53,776 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:53,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2097490812, now seen corresponding path program 1 times [2023-11-19 05:21:53,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:53,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584647054] [2023-11-19 05:21:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:54,290 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 05:21:54,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584647054] [2023-11-19 05:21:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584647054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:54,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:54,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:21:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58728820] [2023-11-19 05:21:54,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:54,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:21:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:54,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:21:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:21:54,294 INFO L87 Difference]: Start difference. First operand 13676 states and 18322 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:55,870 INFO L93 Difference]: Finished difference Result 41548 states and 55893 transitions. [2023-11-19 05:21:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:21:55,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-19 05:21:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:55,921 INFO L225 Difference]: With dead ends: 41548 [2023-11-19 05:21:55,922 INFO L226 Difference]: Without dead ends: 31008 [2023-11-19 05:21:55,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:21:55,941 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 2323 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:55,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 1893 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:21:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31008 states. [2023-11-19 05:21:56,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31008 to 13656. [2023-11-19 05:21:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13656 states, 13649 states have (on average 1.3400249102498352) internal successors, (18290), 13655 states have internal predecessors, (18290), 0 states have call successors, (0), 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 05:21:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13656 states to 13656 states and 18290 transitions. [2023-11-19 05:21:56,246 INFO L78 Accepts]: Start accepts. Automaton has 13656 states and 18290 transitions. Word has length 68 [2023-11-19 05:21:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:56,246 INFO L495 AbstractCegarLoop]: Abstraction has 13656 states and 18290 transitions. [2023-11-19 05:21:56,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13656 states and 18290 transitions. [2023-11-19 05:21:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:21:56,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:56,254 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] [2023-11-19 05:21:56,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 05:21:56,255 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:21:56,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2111634662, now seen corresponding path program 1 times [2023-11-19 05:21:56,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:56,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895879522] [2023-11-19 05:21:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:56,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:56,589 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 05:21:56,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:56,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895879522] [2023-11-19 05:21:56,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895879522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:56,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:56,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:21:56,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904918226] [2023-11-19 05:21:56,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:56,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:21:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:21:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:21:56,594 INFO L87 Difference]: Start difference. First operand 13656 states and 18290 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:57,939 INFO L93 Difference]: Finished difference Result 41346 states and 55598 transitions. [2023-11-19 05:21:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:21:57,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-19 05:21:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:57,989 INFO L225 Difference]: With dead ends: 41346 [2023-11-19 05:21:57,990 INFO L226 Difference]: Without dead ends: 30825 [2023-11-19 05:21:58,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:21:58,006 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 2342 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:58,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2342 Valid, 1819 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 05:21:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30825 states. [2023-11-19 05:21:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30825 to 13644. [2023-11-19 05:21:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13644 states, 13637 states have (on average 1.3395174891838382) internal successors, (18267), 13643 states have internal predecessors, (18267), 0 states have call successors, (0), 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 05:21:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13644 states to 13644 states and 18267 transitions. [2023-11-19 05:21:58,302 INFO L78 Accepts]: Start accepts. Automaton has 13644 states and 18267 transitions. Word has length 68 [2023-11-19 05:21:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:58,303 INFO L495 AbstractCegarLoop]: Abstraction has 13644 states and 18267 transitions. [2023-11-19 05:21:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:21:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13644 states and 18267 transitions. [2023-11-19 05:21:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 05:21:58,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:58,309 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] [2023-11-19 05:21:58,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 05:21:58,309 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 05:21:58,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1885132627, now seen corresponding path program 1 times [2023-11-19 05:21:58,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:58,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619421578] [2023-11-19 05:21:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:58,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:59,317 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 05:21:59,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619421578] [2023-11-19 05:21:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619421578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 05:21:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764735535] [2023-11-19 05:21:59,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:59,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 05:21:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 05:21:59,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:21:59,321 INFO L87 Difference]: Start difference. First operand 13644 states and 18267 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:22:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:02,413 INFO L93 Difference]: Finished difference Result 84436 states and 114019 transitions. [2023-11-19 05:22:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-19 05:22:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-19 05:22:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:02,526 INFO L225 Difference]: With dead ends: 84436 [2023-11-19 05:22:02,526 INFO L226 Difference]: Without dead ends: 73918 [2023-11-19 05:22:02,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 05:22:02,551 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 4256 mSDsluCounter, 4867 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 5617 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:02,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 5617 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 05:22:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73918 states. [2023-11-19 05:22:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73918 to 13624. [2023-11-19 05:22:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13624 states, 13618 states have (on average 1.3386694081362902) internal successors, (18230), 13623 states have internal predecessors, (18230), 0 states have call successors, (0), 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 05:22:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 18230 transitions. [2023-11-19 05:22:03,126 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 18230 transitions. Word has length 69 [2023-11-19 05:22:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:03,126 INFO L495 AbstractCegarLoop]: Abstraction has 13624 states and 18230 transitions. [2023-11-19 05:22:03,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:22:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 18230 transitions. [2023-11-19 05:22:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 05:22:03,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:03,133 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] [2023-11-19 05:22:03,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 05:22:03,133 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:22:03,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash -578802053, now seen corresponding path program 1 times [2023-11-19 05:22:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:03,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918150317] [2023-11-19 05:22:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:03,761 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 05:22:03,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:03,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918150317] [2023-11-19 05:22:03,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918150317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:03,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:03,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 05:22:03,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479509181] [2023-11-19 05:22:03,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:03,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:22:03,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:03,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:22:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:22:03,764 INFO L87 Difference]: Start difference. First operand 13624 states and 18230 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:22:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:05,957 INFO L93 Difference]: Finished difference Result 63269 states and 85380 transitions. [2023-11-19 05:22:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:22:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-19 05:22:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:06,048 INFO L225 Difference]: With dead ends: 63269 [2023-11-19 05:22:06,048 INFO L226 Difference]: Without dead ends: 52521 [2023-11-19 05:22:06,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:22:06,069 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 2964 mSDsluCounter, 3919 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2964 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:06,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2964 Valid, 4916 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:22:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52521 states. [2023-11-19 05:22:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52521 to 13400. [2023-11-19 05:22:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13400 states, 13395 states have (on average 1.337290033594625) internal successors, (17913), 13399 states have internal predecessors, (17913), 0 states have call successors, (0), 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 05:22:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13400 states to 13400 states and 17913 transitions. [2023-11-19 05:22:06,456 INFO L78 Accepts]: Start accepts. Automaton has 13400 states and 17913 transitions. Word has length 69 [2023-11-19 05:22:06,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:06,457 INFO L495 AbstractCegarLoop]: Abstraction has 13400 states and 17913 transitions. [2023-11-19 05:22:06,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:22:06,458 INFO L276 IsEmpty]: Start isEmpty. Operand 13400 states and 17913 transitions. [2023-11-19 05:22:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 05:22:06,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:06,464 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, 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 05:22:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 05:22:06,464 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-19 05:22:06,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1227479287, now seen corresponding path program 1 times [2023-11-19 05:22:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454148601] [2023-11-19 05:22:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:06,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:06,556 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 05:22:06,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:06,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454148601] [2023-11-19 05:22:06,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454148601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:06,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:06,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:06,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290911044] [2023-11-19 05:22:06,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:06,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:06,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:06,559 INFO L87 Difference]: Start difference. First operand 13400 states and 17913 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)