./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91 --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 a6a02224ad3116421a031fb474928d71f99a366daf138bf7c752aaea303a81f9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:40,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:40,546 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:10:40,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:40,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:40,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:40,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:40,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:40,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:40,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:40,612 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:40,613 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:40,613 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:40,615 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:10:40,616 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:40,616 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:40,617 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:10:40,617 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:10:40,618 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:40,618 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:10:40,619 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:10:40,619 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:10:40,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:40,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:40,622 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:10:40,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:40,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:10:40,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:40,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:40,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:40,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:40,626 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:10:40,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:40,626 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:40,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:40,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:40,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:40,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:40,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:40,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:40,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:10:40,629 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:10:40,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:10:40,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:40,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:10:40,630 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:40,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:40,630 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6a02224ad3116421a031fb474928d71f99a366daf138bf7c752aaea303a81f9 [2023-11-25 00:10:40,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:41,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:41,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:41,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:41,014 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:41,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-25 00:10:44,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:44,782 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:44,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-25 00:10:44,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/data/2b5801f97/5533aa82195346ae804459b77a818461/FLAGf3c98b62a [2023-11-25 00:10:44,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/data/2b5801f97/5533aa82195346ae804459b77a818461 [2023-11-25 00:10:44,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:44,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:44,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:44,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:44,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:44,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:44" (1/1) ... [2023-11-25 00:10:44,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59029134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:44, skipping insertion in model container [2023-11-25 00:10:44,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:44" (1/1) ... [2023-11-25 00:10:44,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:45,360 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7117,7130] [2023-11-25 00:10:45,392 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9784,9797] [2023-11-25 00:10:45,403 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10875,10888] [2023-11-25 00:10:45,419 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11481,11494] [2023-11-25 00:10:45,435 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12900,12913] [2023-11-25 00:10:45,443 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13506,13519] [2023-11-25 00:10:45,451 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14435,14448] [2023-11-25 00:10:45,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:45,541 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:45,604 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7117,7130] [2023-11-25 00:10:45,620 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9784,9797] [2023-11-25 00:10:45,628 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10875,10888] [2023-11-25 00:10:45,634 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11481,11494] [2023-11-25 00:10:45,644 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12900,12913] [2023-11-25 00:10:45,649 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13506,13519] [2023-11-25 00:10:45,658 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_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14435,14448] [2023-11-25 00:10:45,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:45,766 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:45,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45 WrapperNode [2023-11-25 00:10:45,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:45,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:45,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:45,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:45,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,920 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1044 [2023-11-25 00:10:45,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:45,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:45,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:45,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:45,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:10:46,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:10:46,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:10:46,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:10:46,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:46,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:46,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:10:46,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07950c1d-8d1a-4fcd-9f61-d4409fe8e1cd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:10:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:10:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:10:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:10:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:10:46,416 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:10:46,420 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:10:47,663 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:10:47,814 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:10:47,815 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:10:47,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:47 BoogieIcfgContainer [2023-11-25 00:10:47,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:10:47,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:10:47,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:10:47,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:10:47,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:44" (1/3) ... [2023-11-25 00:10:47,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cc4342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:47, skipping insertion in model container [2023-11-25 00:10:47,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (2/3) ... [2023-11-25 00:10:47,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cc4342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:47, skipping insertion in model container [2023-11-25 00:10:47,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:47" (3/3) ... [2023-11-25 00:10:47,836 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-25 00:10:47,862 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:10:47,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-25 00:10:47,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:10:47,955 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;@2ce6361d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:10:47,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-25 00:10:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 181 states have (on average 1.839779005524862) internal successors, (333), 189 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-25 00:10:47,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:47,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:47,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:47,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -114756949, now seen corresponding path program 1 times [2023-11-25 00:10:48,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:48,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091839871] [2023-11-25 00:10:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:48,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091839871] [2023-11-25 00:10:48,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091839871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:48,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:48,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:10:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498842625] [2023-11-25 00:10:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:10:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:10:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:10:48,814 INFO L87 Difference]: Start difference. First operand has 190 states, 181 states have (on average 1.839779005524862) internal successors, (333), 189 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:49,163 INFO L93 Difference]: Finished difference Result 305 states and 511 transitions. [2023-11-25 00:10:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:49,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-25 00:10:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:49,180 INFO L225 Difference]: With dead ends: 305 [2023-11-25 00:10:49,181 INFO L226 Difference]: Without dead ends: 167 [2023-11-25 00:10:49,185 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 [2023-11-25 00:10:49,190 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 771 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:49,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 221 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:10:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-25 00:10:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-11-25 00:10:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 160 states have (on average 1.23125) internal successors, (197), 166 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2023-11-25 00:10:49,245 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 45 [2023-11-25 00:10:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:49,246 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2023-11-25 00:10:49,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2023-11-25 00:10:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-25 00:10:49,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:49,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:49,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:10:49,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:49,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1679415330, now seen corresponding path program 1 times [2023-11-25 00:10:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:49,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503804566] [2023-11-25 00:10:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:49,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:49,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503804566] [2023-11-25 00:10:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503804566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:49,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:49,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:10:49,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335779434] [2023-11-25 00:10:49,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:49,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:10:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:10:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:10:49,433 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:49,580 INFO L93 Difference]: Finished difference Result 275 states and 332 transitions. [2023-11-25 00:10:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:49,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-25 00:10:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:49,583 INFO L225 Difference]: With dead ends: 275 [2023-11-25 00:10:49,583 INFO L226 Difference]: Without dead ends: 148 [2023-11-25 00:10:49,584 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 [2023-11-25 00:10:49,586 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 498 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 109 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:10:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-25 00:10:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-25 00:10:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 147 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2023-11-25 00:10:49,600 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 46 [2023-11-25 00:10:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:49,600 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2023-11-25 00:10:49,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2023-11-25 00:10:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-25 00:10:49,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:49,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:49,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:10:49,604 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)] === [2023-11-25 00:10:49,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash -577877594, now seen corresponding path program 1 times [2023-11-25 00:10:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:49,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183695085] [2023-11-25 00:10:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:49,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183695085] [2023-11-25 00:10:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183695085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:49,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:49,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:10:49,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426405038] [2023-11-25 00:10:49,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:49,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:10:49,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:49,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:10:49,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:10:49,750 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:49,878 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2023-11-25 00:10:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:49,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-25 00:10:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:49,880 INFO L225 Difference]: With dead ends: 256 [2023-11-25 00:10:49,881 INFO L226 Difference]: Without dead ends: 140 [2023-11-25 00:10:49,882 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 [2023-11-25 00:10:49,883 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 456 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:49,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 108 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:10:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-25 00:10:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-25 00:10:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 133 states have (on average 1.2406015037593985) internal successors, (165), 139 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2023-11-25 00:10:49,895 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 47 [2023-11-25 00:10:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2023-11-25 00:10:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2023-11-25 00:10:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-25 00:10:49,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:49,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:10:49,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:49,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash -990553041, now seen corresponding path program 1 times [2023-11-25 00:10:49,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:49,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67327165] [2023-11-25 00:10:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:49,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:50,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67327165] [2023-11-25 00:10:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67327165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:50,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:50,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:10:50,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909741437] [2023-11-25 00:10:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:10:50,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:10:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:10:50,431 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:51,213 INFO L93 Difference]: Finished difference Result 270 states and 325 transitions. [2023-11-25 00:10:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-25 00:10:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-25 00:10:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:51,218 INFO L225 Difference]: With dead ends: 270 [2023-11-25 00:10:51,219 INFO L226 Difference]: Without dead ends: 265 [2023-11-25 00:10:51,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:10:51,224 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 581 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:51,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 689 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:10:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-25 00:10:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 140. [2023-11-25 00:10:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 133 states have (on average 1.2330827067669172) internal successors, (164), 139 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2023-11-25 00:10:51,244 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 48 [2023-11-25 00:10:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:51,245 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2023-11-25 00:10:51,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2023-11-25 00:10:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-25 00:10:51,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:51,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:10:51,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:51,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash 921644061, now seen corresponding path program 1 times [2023-11-25 00:10:51,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:51,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817644473] [2023-11-25 00:10:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:51,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:51,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817644473] [2023-11-25 00:10:51,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817644473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:51,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:51,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:10:51,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758343364] [2023-11-25 00:10:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:51,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:10:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:10:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:10:51,706 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:52,407 INFO L93 Difference]: Finished difference Result 314 states and 382 transitions. [2023-11-25 00:10:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-25 00:10:52,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-25 00:10:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:52,410 INFO L225 Difference]: With dead ends: 314 [2023-11-25 00:10:52,410 INFO L226 Difference]: Without dead ends: 269 [2023-11-25 00:10:52,411 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 [2023-11-25 00:10:52,412 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 595 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:52,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 708 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:10:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-25 00:10:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 140. [2023-11-25 00:10:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 133 states have (on average 1.2255639097744362) internal successors, (163), 139 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2023-11-25 00:10:52,423 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 48 [2023-11-25 00:10:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:52,424 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2023-11-25 00:10:52,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2023-11-25 00:10:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-25 00:10:52,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:52,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:52,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:10:52,427 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)] === [2023-11-25 00:10:52,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash -528561187, now seen corresponding path program 1 times [2023-11-25 00:10:52,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:52,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007147331] [2023-11-25 00:10:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:52,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007147331] [2023-11-25 00:10:52,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007147331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:52,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:10:52,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725648731] [2023-11-25 00:10:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:52,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:10:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:10:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:10:52,783 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:53,159 INFO L93 Difference]: Finished difference Result 265 states and 309 transitions. [2023-11-25 00:10:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:10:53,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-25 00:10:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:53,161 INFO L225 Difference]: With dead ends: 265 [2023-11-25 00:10:53,161 INFO L226 Difference]: Without dead ends: 197 [2023-11-25 00:10:53,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:10:53,163 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 465 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:53,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 356 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:10:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-25 00:10:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 140. [2023-11-25 00:10:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 133 states have (on average 1.218045112781955) internal successors, (162), 139 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2023-11-25 00:10:53,171 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 48 [2023-11-25 00:10:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:53,171 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2023-11-25 00:10:53,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2023-11-25 00:10:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-25 00:10:53,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:53,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-25 00:10:53,174 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:53,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1923049146, now seen corresponding path program 1 times [2023-11-25 00:10:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:53,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785267105] [2023-11-25 00:10:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:53,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:54,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:54,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785267105] [2023-11-25 00:10:54,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785267105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:54,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-25 00:10:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394708124] [2023-11-25 00:10:54,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:54,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-25 00:10:54,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:54,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-25 00:10:54,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:10:54,066 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:55,206 INFO L93 Difference]: Finished difference Result 312 states and 360 transitions. [2023-11-25 00:10:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-25 00:10:55,208 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-25 00:10:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:55,210 INFO L225 Difference]: With dead ends: 312 [2023-11-25 00:10:55,210 INFO L226 Difference]: Without dead ends: 308 [2023-11-25 00:10:55,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-11-25 00:10:55,211 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 832 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:55,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1481 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:10:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-25 00:10:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 136. [2023-11-25 00:10:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 135 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2023-11-25 00:10:55,221 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 50 [2023-11-25 00:10:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:55,222 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2023-11-25 00:10:55,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2023-11-25 00:10:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-25 00:10:55,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:55,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:55,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-25 00:10:55,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:55,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash -297239348, now seen corresponding path program 1 times [2023-11-25 00:10:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068396358] [2023-11-25 00:10:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:55,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:55,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068396358] [2023-11-25 00:10:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068396358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:55,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:55,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-25 00:10:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759914143] [2023-11-25 00:10:56,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:56,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-25 00:10:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:56,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-25 00:10:56,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:10:56,002 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:57,044 INFO L93 Difference]: Finished difference Result 339 states and 395 transitions. [2023-11-25 00:10:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-25 00:10:57,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-25 00:10:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:57,047 INFO L225 Difference]: With dead ends: 339 [2023-11-25 00:10:57,047 INFO L226 Difference]: Without dead ends: 307 [2023-11-25 00:10:57,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2023-11-25 00:10:57,049 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 842 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:57,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1206 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:10:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-25 00:10:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 132. [2023-11-25 00:10:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.204724409448819) internal successors, (153), 131 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2023-11-25 00:10:57,056 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 50 [2023-11-25 00:10:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:57,056 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2023-11-25 00:10:57,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2023-11-25 00:10:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-25 00:10:57,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:57,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:57,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-25 00:10:57,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:57,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2077756496, now seen corresponding path program 1 times [2023-11-25 00:10:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:57,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148603971] [2023-11-25 00:10:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:57,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:57,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:57,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148603971] [2023-11-25 00:10:57,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148603971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:57,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:57,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-25 00:10:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98897809] [2023-11-25 00:10:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-25 00:10:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-25 00:10:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:10:57,803 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:58,748 INFO L93 Difference]: Finished difference Result 333 states and 401 transitions. [2023-11-25 00:10:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-25 00:10:58,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-25 00:10:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:58,751 INFO L225 Difference]: With dead ends: 333 [2023-11-25 00:10:58,751 INFO L226 Difference]: Without dead ends: 294 [2023-11-25 00:10:58,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-11-25 00:10:58,753 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 712 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:58,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1870 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:10:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-25 00:10:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 121. [2023-11-25 00:10:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 120 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2023-11-25 00:10:58,759 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 50 [2023-11-25 00:10:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:58,760 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2023-11-25 00:10:58,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2023-11-25 00:10:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-25 00:10:58,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:58,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:58,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-25 00:10:58,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:58,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash 200492003, now seen corresponding path program 1 times [2023-11-25 00:10:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588364627] [2023-11-25 00:10:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:59,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:59,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588364627] [2023-11-25 00:10:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588364627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:59,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:59,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:10:59,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133056245] [2023-11-25 00:10:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:59,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:10:59,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:10:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:10:59,100 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:59,568 INFO L93 Difference]: Finished difference Result 191 states and 221 transitions. [2023-11-25 00:10:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-25 00:10:59,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-25 00:10:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:59,570 INFO L225 Difference]: With dead ends: 191 [2023-11-25 00:10:59,570 INFO L226 Difference]: Without dead ends: 184 [2023-11-25 00:10:59,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:10:59,571 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 432 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:59,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 522 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:10:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-25 00:10:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 121. [2023-11-25 00:10:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.188034188034188) internal successors, (139), 120 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2023-11-25 00:10:59,577 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 51 [2023-11-25 00:10:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:59,577 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2023-11-25 00:10:59,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:10:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2023-11-25 00:10:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-25 00:10:59,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:59,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:59,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-25 00:10:59,579 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:10:59,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash -336264989, now seen corresponding path program 1 times [2023-11-25 00:10:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824951222] [2023-11-25 00:10:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:59,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:59,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824951222] [2023-11-25 00:10:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824951222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:59,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:10:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057396359] [2023-11-25 00:10:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:10:59,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:10:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:10:59,870 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:00,335 INFO L93 Difference]: Finished difference Result 234 states and 277 transitions. [2023-11-25 00:11:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-25 00:11:00,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-25 00:11:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:00,337 INFO L225 Difference]: With dead ends: 234 [2023-11-25 00:11:00,337 INFO L226 Difference]: Without dead ends: 188 [2023-11-25 00:11:00,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-11-25 00:11:00,338 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 495 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:00,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 425 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:11:00,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-25 00:11:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 121. [2023-11-25 00:11:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 120 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2023-11-25 00:11:00,344 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 51 [2023-11-25 00:11:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:00,344 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2023-11-25 00:11:00,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2023-11-25 00:11:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-25 00:11:00,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:00,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:00,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-25 00:11:00,346 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:00,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash 91025507, now seen corresponding path program 1 times [2023-11-25 00:11:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:00,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844625006] [2023-11-25 00:11:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:00,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:00,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:00,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844625006] [2023-11-25 00:11:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844625006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:00,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:11:00,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866732726] [2023-11-25 00:11:00,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:11:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:11:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:11:00,876 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:01,806 INFO L93 Difference]: Finished difference Result 271 states and 323 transitions. [2023-11-25 00:11:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-25 00:11:01,807 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-25 00:11:01,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:01,809 INFO L225 Difference]: With dead ends: 271 [2023-11-25 00:11:01,809 INFO L226 Difference]: Without dead ends: 264 [2023-11-25 00:11:01,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2023-11-25 00:11:01,811 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1007 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:01,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 503 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:11:01,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-25 00:11:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 125. [2023-11-25 00:11:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.1735537190082646) internal successors, (142), 124 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2023-11-25 00:11:01,818 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 51 [2023-11-25 00:11:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:01,819 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2023-11-25 00:11:01,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2023-11-25 00:11:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-25 00:11:01,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:01,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:01,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-25 00:11:01,821 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:01,822 INFO L85 PathProgramCache]: Analyzing trace with hash 459016432, now seen corresponding path program 1 times [2023-11-25 00:11:01,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:01,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271271327] [2023-11-25 00:11:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:02,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271271327] [2023-11-25 00:11:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271271327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:02,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:02,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:11:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562453034] [2023-11-25 00:11:02,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:02,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:11:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:11:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:11:02,154 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:02,641 INFO L93 Difference]: Finished difference Result 191 states and 218 transitions. [2023-11-25 00:11:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-25 00:11:02,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-25 00:11:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:02,643 INFO L225 Difference]: With dead ends: 191 [2023-11-25 00:11:02,643 INFO L226 Difference]: Without dead ends: 184 [2023-11-25 00:11:02,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:11:02,645 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 297 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:02,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 479 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:11:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-25 00:11:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 121. [2023-11-25 00:11:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.170940170940171) internal successors, (137), 120 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 137 transitions. [2023-11-25 00:11:02,652 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 137 transitions. Word has length 52 [2023-11-25 00:11:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:02,652 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 137 transitions. [2023-11-25 00:11:02,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 137 transitions. [2023-11-25 00:11:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-25 00:11:02,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:02,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:02,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-25 00:11:02,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:02,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash 815340979, now seen corresponding path program 1 times [2023-11-25 00:11:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917372939] [2023-11-25 00:11:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:03,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917372939] [2023-11-25 00:11:03,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917372939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:03,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:03,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-25 00:11:03,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859176258] [2023-11-25 00:11:03,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-25 00:11:03,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-25 00:11:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:11:03,805 INFO L87 Difference]: Start difference. First operand 121 states and 137 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:05,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:05,242 INFO L93 Difference]: Finished difference Result 309 states and 355 transitions. [2023-11-25 00:11:05,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-25 00:11:05,243 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-25 00:11:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:05,245 INFO L225 Difference]: With dead ends: 309 [2023-11-25 00:11:05,246 INFO L226 Difference]: Without dead ends: 301 [2023-11-25 00:11:05,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2023-11-25 00:11:05,247 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 960 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:05,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2261 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:11:05,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-25 00:11:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 130. [2023-11-25 00:11:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 129 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2023-11-25 00:11:05,254 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 53 [2023-11-25 00:11:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:05,254 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2023-11-25 00:11:05,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2023-11-25 00:11:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-25 00:11:05,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:05,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:05,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-25 00:11:05,256 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:05,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1737446413, now seen corresponding path program 1 times [2023-11-25 00:11:05,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:05,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501285717] [2023-11-25 00:11:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:05,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:06,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501285717] [2023-11-25 00:11:06,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501285717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:06,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:06,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-25 00:11:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372382483] [2023-11-25 00:11:06,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:06,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-25 00:11:06,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-25 00:11:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:11:06,193 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:07,613 INFO L93 Difference]: Finished difference Result 442 states and 526 transitions. [2023-11-25 00:11:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-25 00:11:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-25 00:11:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:07,616 INFO L225 Difference]: With dead ends: 442 [2023-11-25 00:11:07,617 INFO L226 Difference]: Without dead ends: 436 [2023-11-25 00:11:07,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2023-11-25 00:11:07,620 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1009 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:07,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 2614 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-25 00:11:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-25 00:11:07,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 136. [2023-11-25 00:11:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 135 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 156 transitions. [2023-11-25 00:11:07,629 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 156 transitions. Word has length 53 [2023-11-25 00:11:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:07,629 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 156 transitions. [2023-11-25 00:11:07,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 156 transitions. [2023-11-25 00:11:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-25 00:11:07,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:07,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:07,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-25 00:11:07,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:07,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:07,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1302743949, now seen corresponding path program 1 times [2023-11-25 00:11:07,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:07,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727499946] [2023-11-25 00:11:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:07,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:08,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727499946] [2023-11-25 00:11:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727499946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:08,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:08,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-25 00:11:08,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461562925] [2023-11-25 00:11:08,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-25 00:11:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-25 00:11:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:11:08,479 INFO L87 Difference]: Start difference. First operand 136 states and 156 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:09,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:09,750 INFO L93 Difference]: Finished difference Result 312 states and 359 transitions. [2023-11-25 00:11:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-25 00:11:09,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-25 00:11:09,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:09,752 INFO L225 Difference]: With dead ends: 312 [2023-11-25 00:11:09,753 INFO L226 Difference]: Without dead ends: 304 [2023-11-25 00:11:09,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2023-11-25 00:11:09,754 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 709 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:09,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2486 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:11:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-25 00:11:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 141. [2023-11-25 00:11:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.1751824817518248) internal successors, (161), 140 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 161 transitions. [2023-11-25 00:11:09,760 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 161 transitions. Word has length 53 [2023-11-25 00:11:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:09,760 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 161 transitions. [2023-11-25 00:11:09,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 161 transitions. [2023-11-25 00:11:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-25 00:11:09,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:09,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:09,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-25 00:11:09,762 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)] === [2023-11-25 00:11:09,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1478570090, now seen corresponding path program 1 times [2023-11-25 00:11:09,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594543143] [2023-11-25 00:11:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:10,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:10,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594543143] [2023-11-25 00:11:10,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594543143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:10,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-25 00:11:10,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333338045] [2023-11-25 00:11:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:10,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-25 00:11:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-25 00:11:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:11:10,649 INFO L87 Difference]: Start difference. First operand 141 states and 161 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:12,218 INFO L93 Difference]: Finished difference Result 454 states and 547 transitions. [2023-11-25 00:11:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-25 00:11:12,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-25 00:11:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:12,221 INFO L225 Difference]: With dead ends: 454 [2023-11-25 00:11:12,221 INFO L226 Difference]: Without dead ends: 448 [2023-11-25 00:11:12,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-25 00:11:12,223 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1027 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:12,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 2080 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:11:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-25 00:11:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 141. [2023-11-25 00:11:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.1751824817518248) internal successors, (161), 140 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 161 transitions. [2023-11-25 00:11:12,229 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 161 transitions. Word has length 54 [2023-11-25 00:11:12,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:12,230 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 161 transitions. [2023-11-25 00:11:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 161 transitions. [2023-11-25 00:11:12,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-25 00:11:12,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:12,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:12,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-25 00:11:12,232 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:12,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash 497385650, now seen corresponding path program 1 times [2023-11-25 00:11:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405171850] [2023-11-25 00:11:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:12,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:12,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405171850] [2023-11-25 00:11:12,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405171850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:12,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:12,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-25 00:11:12,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679981610] [2023-11-25 00:11:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:12,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-25 00:11:12,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-25 00:11:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:11:12,829 INFO L87 Difference]: Start difference. First operand 141 states and 161 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:13,838 INFO L93 Difference]: Finished difference Result 329 states and 397 transitions. [2023-11-25 00:11:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-25 00:11:13,838 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-25 00:11:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:13,841 INFO L225 Difference]: With dead ends: 329 [2023-11-25 00:11:13,841 INFO L226 Difference]: Without dead ends: 314 [2023-11-25 00:11:13,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-11-25 00:11:13,842 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 593 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:13,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1985 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:11:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-11-25 00:11:13,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 126. [2023-11-25 00:11:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.170731707317073) internal successors, (144), 125 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2023-11-25 00:11:13,847 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 54 [2023-11-25 00:11:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:13,848 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2023-11-25 00:11:13,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2023-11-25 00:11:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-25 00:11:13,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:13,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:13,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-25 00:11:13,849 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:13,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:13,850 INFO L85 PathProgramCache]: Analyzing trace with hash -626895726, now seen corresponding path program 1 times [2023-11-25 00:11:13,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:13,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878693908] [2023-11-25 00:11:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:13,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:14,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878693908] [2023-11-25 00:11:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878693908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:14,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:14,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-25 00:11:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710604758] [2023-11-25 00:11:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:14,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-25 00:11:14,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-25 00:11:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:11:14,471 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:15,534 INFO L93 Difference]: Finished difference Result 384 states and 468 transitions. [2023-11-25 00:11:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-25 00:11:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-25 00:11:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:15,537 INFO L225 Difference]: With dead ends: 384 [2023-11-25 00:11:15,538 INFO L226 Difference]: Without dead ends: 378 [2023-11-25 00:11:15,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-11-25 00:11:15,539 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 707 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:15,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1690 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:11:15,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-25 00:11:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 108. [2023-11-25 00:11:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:15,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2023-11-25 00:11:15,544 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 54 [2023-11-25 00:11:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:15,544 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2023-11-25 00:11:15,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:15,545 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2023-11-25 00:11:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-25 00:11:15,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:15,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:15,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-25 00:11:15,546 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash -738737596, now seen corresponding path program 1 times [2023-11-25 00:11:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845180752] [2023-11-25 00:11:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:16,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:16,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845180752] [2023-11-25 00:11:16,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845180752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:16,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:16,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-25 00:11:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267712757] [2023-11-25 00:11:16,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:16,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-25 00:11:16,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-25 00:11:16,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:11:16,289 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:17,123 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2023-11-25 00:11:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-25 00:11:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-25 00:11:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:17,125 INFO L225 Difference]: With dead ends: 207 [2023-11-25 00:11:17,125 INFO L226 Difference]: Without dead ends: 193 [2023-11-25 00:11:17,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2023-11-25 00:11:17,126 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 330 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:17,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1115 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:11:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-25 00:11:17,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 103. [2023-11-25 00:11:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 102 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2023-11-25 00:11:17,131 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 54 [2023-11-25 00:11:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:17,131 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2023-11-25 00:11:17,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2023-11-25 00:11:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-25 00:11:17,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:17,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-25 00:11:17,133 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:17,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash 149216704, now seen corresponding path program 1 times [2023-11-25 00:11:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:17,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186487117] [2023-11-25 00:11:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:17,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:17,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186487117] [2023-11-25 00:11:17,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186487117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:17,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:17,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:11:17,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876711282] [2023-11-25 00:11:17,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:17,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:11:17,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:11:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:11:17,554 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:18,101 INFO L93 Difference]: Finished difference Result 276 states and 338 transitions. [2023-11-25 00:11:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-25 00:11:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-25 00:11:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:18,103 INFO L225 Difference]: With dead ends: 276 [2023-11-25 00:11:18,104 INFO L226 Difference]: Without dead ends: 258 [2023-11-25 00:11:18,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-11-25 00:11:18,105 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 734 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:18,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 699 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:11:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-25 00:11:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 85. [2023-11-25 00:11:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2023-11-25 00:11:18,109 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 54 [2023-11-25 00:11:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:18,110 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2023-11-25 00:11:18,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2023-11-25 00:11:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-25 00:11:18,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:18,111 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] [2023-11-25 00:11:18,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-25 00:11:18,111 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:18,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1490568549, now seen corresponding path program 1 times [2023-11-25 00:11:18,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933413562] [2023-11-25 00:11:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:18,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:18,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933413562] [2023-11-25 00:11:18,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933413562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:18,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:18,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:11:18,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730047823] [2023-11-25 00:11:18,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:18,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:18,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:18,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:18,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:11:18,206 INFO L87 Difference]: Start difference. First operand 85 states and 98 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) [2023-11-25 00:11:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:18,227 INFO L93 Difference]: Finished difference Result 141 states and 172 transitions. [2023-11-25 00:11:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:18,227 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 [2023-11-25 00:11:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:18,228 INFO L225 Difference]: With dead ends: 141 [2023-11-25 00:11:18,228 INFO L226 Difference]: Without dead ends: 113 [2023-11-25 00:11:18,229 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 [2023-11-25 00:11:18,230 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 41 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:18,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 186 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:11:18,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-25 00:11:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2023-11-25 00:11:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 106 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2023-11-25 00:11:18,234 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 64 [2023-11-25 00:11:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:18,234 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2023-11-25 00:11:18,234 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) [2023-11-25 00:11:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2023-11-25 00:11:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-25 00:11:18,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:18,235 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] [2023-11-25 00:11:18,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-25 00:11:18,236 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:18,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1019053663, now seen corresponding path program 1 times [2023-11-25 00:11:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:18,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423629724] [2023-11-25 00:11:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:18,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423629724] [2023-11-25 00:11:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423629724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:18,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:18,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:11:18,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873540166] [2023-11-25 00:11:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:18,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:18,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:18,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:18,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:11:18,326 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:18,348 INFO L93 Difference]: Finished difference Result 207 states and 262 transitions. [2023-11-25 00:11:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:18,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-25 00:11:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:18,350 INFO L225 Difference]: With dead ends: 207 [2023-11-25 00:11:18,350 INFO L226 Difference]: Without dead ends: 157 [2023-11-25 00:11:18,350 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 [2023-11-25 00:11:18,351 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 34 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:18,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 186 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:11:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-25 00:11:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 147. [2023-11-25 00:11:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.2465753424657535) internal successors, (182), 146 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2023-11-25 00:11:18,356 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 67 [2023-11-25 00:11:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:18,357 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2023-11-25 00:11:18,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2023-11-25 00:11:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-25 00:11:18,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:18,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:18,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-25 00:11:18,358 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:18,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:18,359 INFO L85 PathProgramCache]: Analyzing trace with hash -4200624, now seen corresponding path program 1 times [2023-11-25 00:11:18,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:18,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392480369] [2023-11-25 00:11:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:18,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:18,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:18,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392480369] [2023-11-25 00:11:18,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392480369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:18,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:18,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:11:18,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139192663] [2023-11-25 00:11:18,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:18,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:18,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:11:18,449 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:18,472 INFO L93 Difference]: Finished difference Result 327 states and 424 transitions. [2023-11-25 00:11:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-25 00:11:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:18,475 INFO L225 Difference]: With dead ends: 327 [2023-11-25 00:11:18,475 INFO L226 Difference]: Without dead ends: 237 [2023-11-25 00:11:18,475 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 [2023-11-25 00:11:18,476 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 24 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:18,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 186 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:11:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-25 00:11:18,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 219. [2023-11-25 00:11:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.275229357798165) internal successors, (278), 218 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2023-11-25 00:11:18,483 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 70 [2023-11-25 00:11:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:18,483 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2023-11-25 00:11:18,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2023-11-25 00:11:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-25 00:11:18,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:18,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:18,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-25 00:11:18,485 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:18,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash 190177875, now seen corresponding path program 1 times [2023-11-25 00:11:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:18,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074798814] [2023-11-25 00:11:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:18,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:18,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:18,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074798814] [2023-11-25 00:11:18,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074798814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:18,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:18,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:11:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363180603] [2023-11-25 00:11:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:18,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:11:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:11:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:18,571 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:18,657 INFO L93 Difference]: Finished difference Result 739 states and 960 transitions. [2023-11-25 00:11:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:11:18,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-25 00:11:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:18,661 INFO L225 Difference]: With dead ends: 739 [2023-11-25 00:11:18,661 INFO L226 Difference]: Without dead ends: 577 [2023-11-25 00:11:18,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:11:18,662 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 286 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:18,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 372 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-25 00:11:18,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 311. [2023-11-25 00:11:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.270967741935484) internal successors, (394), 310 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 394 transitions. [2023-11-25 00:11:18,674 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 394 transitions. Word has length 73 [2023-11-25 00:11:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:18,674 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 394 transitions. [2023-11-25 00:11:18,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 394 transitions. [2023-11-25 00:11:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-25 00:11:18,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:18,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:18,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-25 00:11:18,676 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:18,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1938579669, now seen corresponding path program 1 times [2023-11-25 00:11:18,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:18,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938525828] [2023-11-25 00:11:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:18,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938525828] [2023-11-25 00:11:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938525828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:18,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:11:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833620926] [2023-11-25 00:11:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:11:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:11:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:18,823 INFO L87 Difference]: Start difference. First operand 311 states and 394 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:18,890 INFO L93 Difference]: Finished difference Result 567 states and 728 transitions. [2023-11-25 00:11:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:11:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-25 00:11:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:18,893 INFO L225 Difference]: With dead ends: 567 [2023-11-25 00:11:18,893 INFO L226 Difference]: Without dead ends: 313 [2023-11-25 00:11:18,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:11:18,894 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 73 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:18,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:11:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-25 00:11:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2023-11-25 00:11:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.267741935483871) internal successors, (393), 310 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 393 transitions. [2023-11-25 00:11:18,902 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 393 transitions. Word has length 75 [2023-11-25 00:11:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:18,903 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 393 transitions. [2023-11-25 00:11:18,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 393 transitions. [2023-11-25 00:11:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-25 00:11:18,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:18,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:18,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-25 00:11:18,905 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1198839348, now seen corresponding path program 1 times [2023-11-25 00:11:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450088582] [2023-11-25 00:11:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:18,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:18,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450088582] [2023-11-25 00:11:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450088582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:18,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:11:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351242219] [2023-11-25 00:11:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:18,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:11:18,957 INFO L87 Difference]: Start difference. First operand 311 states and 393 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:18,984 INFO L93 Difference]: Finished difference Result 667 states and 858 transitions. [2023-11-25 00:11:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-25 00:11:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:18,988 INFO L225 Difference]: With dead ends: 667 [2023-11-25 00:11:18,988 INFO L226 Difference]: Without dead ends: 413 [2023-11-25 00:11:18,988 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 [2023-11-25 00:11:18,989 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 50 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:18,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 140 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:11:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-11-25 00:11:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 411. [2023-11-25 00:11:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.2682926829268293) internal successors, (520), 410 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 520 transitions. [2023-11-25 00:11:18,998 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 520 transitions. Word has length 75 [2023-11-25 00:11:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:18,999 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 520 transitions. [2023-11-25 00:11:18,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:18,999 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 520 transitions. [2023-11-25 00:11:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-25 00:11:19,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:19,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:19,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-25 00:11:19,001 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:19,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash -92740011, now seen corresponding path program 1 times [2023-11-25 00:11:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:19,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539786515] [2023-11-25 00:11:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:19,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:19,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539786515] [2023-11-25 00:11:19,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539786515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:19,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:19,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:11:19,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799430740] [2023-11-25 00:11:19,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:19,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:11:19,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:19,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:11:19,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:11:19,176 INFO L87 Difference]: Start difference. First operand 411 states and 520 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:19,246 INFO L93 Difference]: Finished difference Result 649 states and 812 transitions. [2023-11-25 00:11:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:11:19,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-25 00:11:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:19,250 INFO L225 Difference]: With dead ends: 649 [2023-11-25 00:11:19,251 INFO L226 Difference]: Without dead ends: 647 [2023-11-25 00:11:19,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:11:19,252 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 125 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:19,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 475 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:11:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-25 00:11:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 435. [2023-11-25 00:11:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.2350230414746544) internal successors, (536), 434 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 536 transitions. [2023-11-25 00:11:19,263 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 536 transitions. Word has length 76 [2023-11-25 00:11:19,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:19,264 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 536 transitions. [2023-11-25 00:11:19,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 536 transitions. [2023-11-25 00:11:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-25 00:11:19,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:19,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:19,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-25 00:11:19,281 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:19,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -573560758, now seen corresponding path program 1 times [2023-11-25 00:11:19,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:19,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515889479] [2023-11-25 00:11:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-25 00:11:19,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515889479] [2023-11-25 00:11:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515889479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:19,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:19,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:11:19,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373993069] [2023-11-25 00:11:19,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:11:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:11:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:11:19,778 INFO L87 Difference]: Start difference. First operand 435 states and 536 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:20,658 INFO L93 Difference]: Finished difference Result 1894 states and 2345 transitions. [2023-11-25 00:11:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-25 00:11:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-25 00:11:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:20,666 INFO L225 Difference]: With dead ends: 1894 [2023-11-25 00:11:20,667 INFO L226 Difference]: Without dead ends: 1510 [2023-11-25 00:11:20,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2023-11-25 00:11:20,674 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1175 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:20,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 519 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:11:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-11-25 00:11:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 439. [2023-11-25 00:11:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.2328767123287672) internal successors, (540), 438 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 540 transitions. [2023-11-25 00:11:20,694 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 540 transitions. Word has length 87 [2023-11-25 00:11:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:20,695 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 540 transitions. [2023-11-25 00:11:20,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 540 transitions. [2023-11-25 00:11:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-25 00:11:20,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:20,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:20,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-25 00:11:20,697 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:20,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1342725331, now seen corresponding path program 1 times [2023-11-25 00:11:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:20,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428598970] [2023-11-25 00:11:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:20,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-25 00:11:20,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428598970] [2023-11-25 00:11:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428598970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:11:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796307713] [2023-11-25 00:11:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:11:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:11:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:11:20,945 INFO L87 Difference]: Start difference. First operand 439 states and 540 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:21,240 INFO L93 Difference]: Finished difference Result 1068 states and 1325 transitions. [2023-11-25 00:11:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-25 00:11:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-25 00:11:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:21,244 INFO L225 Difference]: With dead ends: 1068 [2023-11-25 00:11:21,245 INFO L226 Difference]: Without dead ends: 684 [2023-11-25 00:11:21,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-11-25 00:11:21,246 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 245 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:21,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 268 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-11-25 00:11:21,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 435. [2023-11-25 00:11:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.2327188940092166) internal successors, (535), 434 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 535 transitions. [2023-11-25 00:11:21,258 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 535 transitions. Word has length 88 [2023-11-25 00:11:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:21,258 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 535 transitions. [2023-11-25 00:11:21,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 535 transitions. [2023-11-25 00:11:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-25 00:11:21,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:21,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-25 00:11:21,260 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1913775944, now seen corresponding path program 1 times [2023-11-25 00:11:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604389933] [2023-11-25 00:11:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-25 00:11:21,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:21,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604389933] [2023-11-25 00:11:21,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604389933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:21,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:21,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-25 00:11:21,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315184366] [2023-11-25 00:11:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:21,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-25 00:11:21,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:21,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-25 00:11:21,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-25 00:11:21,992 INFO L87 Difference]: Start difference. First operand 435 states and 535 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:22,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:22,998 INFO L93 Difference]: Finished difference Result 1546 states and 1919 transitions. [2023-11-25 00:11:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-25 00:11:23,000 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-25 00:11:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:23,006 INFO L225 Difference]: With dead ends: 1546 [2023-11-25 00:11:23,006 INFO L226 Difference]: Without dead ends: 1161 [2023-11-25 00:11:23,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-25 00:11:23,008 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 528 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:23,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 2239 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:11:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-11-25 00:11:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 445. [2023-11-25 00:11:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.2297297297297298) internal successors, (546), 444 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 546 transitions. [2023-11-25 00:11:23,025 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 546 transitions. Word has length 89 [2023-11-25 00:11:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:23,026 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 546 transitions. [2023-11-25 00:11:23,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:11:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 546 transitions. [2023-11-25 00:11:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-25 00:11:23,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:23,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-25 00:11:23,028 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-25 00:11:23,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1480996203, now seen corresponding path program 1 times [2023-11-25 00:11:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465034173] [2023-11-25 00:11:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat