./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/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 0d7ece5c4a9a1765b3b43243827c3f464d1b8786fc999bf2c8e86adac4d3a79a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:38,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:39,069 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:55:39,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:39,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:39,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:39,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:39,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:39,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:39,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:39,112 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:39,113 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:39,122 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:39,122 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:55:39,123 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:39,124 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:39,124 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:55:39,125 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:55:39,126 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:39,126 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:55:39,127 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:55:39,128 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:55:39,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:39,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:39,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:55:39,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:55:39,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:55:39,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:39,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:39,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:39,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:39,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:55:39,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:39,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:39,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:39,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:39,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:39,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:39,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:39,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:39,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:39,141 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:55:39,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:55:39,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:39,142 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:39,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:39,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:39,144 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d7ece5c4a9a1765b3b43243827c3f464d1b8786fc999bf2c8e86adac4d3a79a [2023-11-24 23:55:39,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:39,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:39,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:39,493 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:39,495 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:39,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-11-24 23:55:42,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:43,049 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:43,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-11-24 23:55:43,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/data/b9157df6e/86944996c72b438da3ab2e3afcd841b1/FLAG2b261e519 [2023-11-24 23:55:43,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/data/b9157df6e/86944996c72b438da3ab2e3afcd841b1 [2023-11-24 23:55:43,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:43,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:43,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:43,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:43,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:43,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:43" (1/1) ... [2023-11-24 23:55:43,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14611a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:43, skipping insertion in model container [2023-11-24 23:55:43,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:43" (1/1) ... [2023-11-24 23:55:43,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:43,849 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33192,33205] [2023-11-24 23:55:43,979 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[47557,47570] [2023-11-24 23:55:44,036 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[54728,54741] [2023-11-24 23:55:44,054 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58287,58300] [2023-11-24 23:55:44,083 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[61647,61660] [2023-11-24 23:55:44,171 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[76934,76947] [2023-11-24 23:55:44,217 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[84100,84113] [2023-11-24 23:55:44,233 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[87654,87667] [2023-11-24 23:55:44,257 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[91009,91022] [2023-11-24 23:55:44,278 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[95142,95155] [2023-11-24 23:55:44,295 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98563,98576] [2023-11-24 23:55:44,309 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[102117,102130] [2023-11-24 23:55:44,321 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[105472,105485] [2023-11-24 23:55:44,348 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[109226,109239] [2023-11-24 23:55:44,362 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[112596,112609] [2023-11-24 23:55:44,375 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[116131,116144] [2023-11-24 23:55:44,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:44,459 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:44,654 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33192,33205] [2023-11-24 23:55:44,701 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[47557,47570] [2023-11-24 23:55:44,722 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[54728,54741] [2023-11-24 23:55:44,734 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58287,58300] [2023-11-24 23:55:44,745 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[61647,61660] [2023-11-24 23:55:44,788 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[76934,76947] [2023-11-24 23:55:44,810 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[84100,84113] [2023-11-24 23:55:44,821 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[87654,87667] [2023-11-24 23:55:44,832 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[91009,91022] [2023-11-24 23:55:44,845 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[95142,95155] [2023-11-24 23:55:44,862 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98563,98576] [2023-11-24 23:55:44,873 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[102117,102130] [2023-11-24 23:55:44,883 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[105472,105485] [2023-11-24 23:55:44,895 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[109226,109239] [2023-11-24 23:55:44,906 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[112596,112609] [2023-11-24 23:55:44,919 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_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[116131,116144] [2023-11-24 23:55:44,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:44,979 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:44,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44 WrapperNode [2023-11-24 23:55:44,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:44,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:44,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:44,982 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:44,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,244 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5781 [2023-11-24 23:55:45,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:45,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:45,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:45,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:45,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:45,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:45,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:45,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:45,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (1/1) ... [2023-11-24 23:55:45,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:45,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:45,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:45,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aceff4a9-b8e9-4f3f-af42-1f0b7516e884/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:45,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:45,865 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:45,868 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:48,777 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:49,017 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:49,018 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:55:49,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:49 BoogieIcfgContainer [2023-11-24 23:55:49,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:49,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:49,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:49,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:49,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:43" (1/3) ... [2023-11-24 23:55:49,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700c7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:49, skipping insertion in model container [2023-11-24 23:55:49,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:44" (2/3) ... [2023-11-24 23:55:49,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700c7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:49, skipping insertion in model container [2023-11-24 23:55:49,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:49" (3/3) ... [2023-11-24 23:55:49,032 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-11-24 23:55:49,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:49,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-24 23:55:49,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:49,147 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;@42aab05b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:49,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-24 23:55:49,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 1069 states have (on average 1.8297474275023387) internal successors, (1956), 1085 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 23:55:49,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:49,186 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] [2023-11-24 23:55:49,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:49,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1232435330, now seen corresponding path program 1 times [2023-11-24 23:55:49,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:49,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603984501] [2023-11-24 23:55:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:49,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603984501] [2023-11-24 23:55:49,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603984501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:49,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:49,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:49,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883518838] [2023-11-24 23:55:49,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:49,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:49,909 INFO L87 Difference]: Start difference. First operand has 1086 states, 1069 states have (on average 1.8297474275023387) internal successors, (1956), 1085 states have internal predecessors, (1956), 0 states have call successors, (0), 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 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:51,512 INFO L93 Difference]: Finished difference Result 1752 states and 3051 transitions. [2023-11-24 23:55:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:51,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-24 23:55:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:51,538 INFO L225 Difference]: With dead ends: 1752 [2023-11-24 23:55:51,539 INFO L226 Difference]: Without dead ends: 1201 [2023-11-24 23:55:51,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:55:51,548 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 5455 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5455 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:51,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5455 Valid, 1130 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 23:55:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2023-11-24 23:55:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1097. [2023-11-24 23:55:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1081 states have (on average 1.3367252543940795) internal successors, (1445), 1096 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1445 transitions. [2023-11-24 23:55:51,691 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1445 transitions. Word has length 71 [2023-11-24 23:55:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:51,692 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1445 transitions. [2023-11-24 23:55:51,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1445 transitions. [2023-11-24 23:55:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 23:55:51,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:51,697 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] [2023-11-24 23:55:51,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:55:51,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:51,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:51,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1527450296, now seen corresponding path program 1 times [2023-11-24 23:55:51,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:51,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501284118] [2023-11-24 23:55:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:51,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:52,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:52,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501284118] [2023-11-24 23:55:52,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501284118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:52,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:52,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:52,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791517304] [2023-11-24 23:55:52,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:52,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:52,087 INFO L87 Difference]: Start difference. First operand 1097 states and 1445 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:52,668 INFO L93 Difference]: Finished difference Result 1342 states and 1753 transitions. [2023-11-24 23:55:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-24 23:55:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:52,676 INFO L225 Difference]: With dead ends: 1342 [2023-11-24 23:55:52,676 INFO L226 Difference]: Without dead ends: 795 [2023-11-24 23:55:52,678 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 [2023-11-24 23:55:52,681 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2258 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:52,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2258 Valid, 385 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:55:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-11-24 23:55:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2023-11-24 23:55:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 779 states have (on average 1.350449293966624) internal successors, (1052), 794 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1052 transitions. [2023-11-24 23:55:52,714 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1052 transitions. Word has length 71 [2023-11-24 23:55:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:52,716 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1052 transitions. [2023-11-24 23:55:52,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1052 transitions. [2023-11-24 23:55:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 23:55:52,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:52,723 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] [2023-11-24 23:55:52,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:55:52,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:52,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2115552032, now seen corresponding path program 1 times [2023-11-24 23:55:52,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307870583] [2023-11-24 23:55:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:53,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:53,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307870583] [2023-11-24 23:55:53,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307870583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:53,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:53,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124553200] [2023-11-24 23:55:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:53,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:53,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:53,043 INFO L87 Difference]: Start difference. First operand 795 states and 1052 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:53,432 INFO L93 Difference]: Finished difference Result 959 states and 1244 transitions. [2023-11-24 23:55:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-24 23:55:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:53,440 INFO L225 Difference]: With dead ends: 959 [2023-11-24 23:55:53,441 INFO L226 Difference]: Without dead ends: 565 [2023-11-24 23:55:53,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:55:53,443 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1524 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:53,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 299 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-11-24 23:55:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2023-11-24 23:55:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 549 states have (on average 1.349726775956284) internal successors, (741), 564 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 741 transitions. [2023-11-24 23:55:53,460 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 741 transitions. Word has length 71 [2023-11-24 23:55:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:53,460 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 741 transitions. [2023-11-24 23:55:53,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 741 transitions. [2023-11-24 23:55:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-24 23:55:53,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:53,463 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] [2023-11-24 23:55:53,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:55:53,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:53,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1156366953, now seen corresponding path program 1 times [2023-11-24 23:55:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:53,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318351785] [2023-11-24 23:55:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:53,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:53,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318351785] [2023-11-24 23:55:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318351785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:53,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:53,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:53,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74215267] [2023-11-24 23:55:53,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:53,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:53,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:53,662 INFO L87 Difference]: Start difference. First operand 565 states and 741 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:53,964 INFO L93 Difference]: Finished difference Result 812 states and 1065 transitions. [2023-11-24 23:55:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-11-24 23:55:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:53,968 INFO L225 Difference]: With dead ends: 812 [2023-11-24 23:55:53,968 INFO L226 Difference]: Without dead ends: 504 [2023-11-24 23:55:53,969 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 [2023-11-24 23:55:53,970 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1368 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:53,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 276 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-11-24 23:55:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2023-11-24 23:55:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.360655737704918) internal successors, (664), 503 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 664 transitions. [2023-11-24 23:55:53,985 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 664 transitions. Word has length 72 [2023-11-24 23:55:53,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:53,985 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 664 transitions. [2023-11-24 23:55:53,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 664 transitions. [2023-11-24 23:55:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-24 23:55:53,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:53,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:53,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:55:53,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:53,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1186891401, now seen corresponding path program 1 times [2023-11-24 23:55:53,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:53,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639420218] [2023-11-24 23:55:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:53,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:54,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639420218] [2023-11-24 23:55:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639420218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:54,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:54,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961096692] [2023-11-24 23:55:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:54,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:54,135 INFO L87 Difference]: Start difference. First operand 504 states and 664 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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) [2023-11-24 23:55:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:54,493 INFO L93 Difference]: Finished difference Result 732 states and 960 transitions. [2023-11-24 23:55:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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 [2023-11-24 23:55:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:54,497 INFO L225 Difference]: With dead ends: 732 [2023-11-24 23:55:54,497 INFO L226 Difference]: Without dead ends: 496 [2023-11-24 23:55:54,498 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 [2023-11-24 23:55:54,499 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1291 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:54,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 251 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-24 23:55:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2023-11-24 23:55:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3604166666666666) internal successors, (653), 495 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 653 transitions. [2023-11-24 23:55:54,512 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 653 transitions. Word has length 73 [2023-11-24 23:55:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:54,513 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 653 transitions. [2023-11-24 23:55:54,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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) [2023-11-24 23:55:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 653 transitions. [2023-11-24 23:55:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-24 23:55:54,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:54,515 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] [2023-11-24 23:55:54,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:55:54,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:54,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash -117023922, now seen corresponding path program 1 times [2023-11-24 23:55:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731825745] [2023-11-24 23:55:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:54,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:54,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731825745] [2023-11-24 23:55:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731825745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 23:55:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346601522] [2023-11-24 23:55:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:55:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:55:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:55:54,968 INFO L87 Difference]: Start difference. First operand 496 states and 653 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:56,086 INFO L93 Difference]: Finished difference Result 1057 states and 1400 transitions. [2023-11-24 23:55:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:55:56,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-24 23:55:56,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:56,092 INFO L225 Difference]: With dead ends: 1057 [2023-11-24 23:55:56,093 INFO L226 Difference]: Without dead ends: 933 [2023-11-24 23:55:56,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:55:56,095 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1482 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:56,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1453 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:55:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-11-24 23:55:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 496. [2023-11-24 23:55:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.35625) internal successors, (651), 495 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 651 transitions. [2023-11-24 23:55:56,116 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 651 transitions. Word has length 74 [2023-11-24 23:55:56,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:56,117 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 651 transitions. [2023-11-24 23:55:56,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 651 transitions. [2023-11-24 23:55:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-24 23:55:56,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:56,123 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] [2023-11-24 23:55:56,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:55:56,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:56,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:56,125 INFO L85 PathProgramCache]: Analyzing trace with hash 782905456, now seen corresponding path program 1 times [2023-11-24 23:55:56,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:56,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643474958] [2023-11-24 23:55:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:56,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:56,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643474958] [2023-11-24 23:55:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643474958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:56,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:56,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:55:56,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274021294] [2023-11-24 23:55:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:56,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:55:56,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:55:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:55:56,630 INFO L87 Difference]: Start difference. First operand 496 states and 651 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:57,368 INFO L93 Difference]: Finished difference Result 906 states and 1148 transitions. [2023-11-24 23:55:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:55:57,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-24 23:55:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:57,373 INFO L225 Difference]: With dead ends: 906 [2023-11-24 23:55:57,373 INFO L226 Difference]: Without dead ends: 678 [2023-11-24 23:55:57,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:55:57,374 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 2082 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:57,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 587 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:55:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-11-24 23:55:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 496. [2023-11-24 23:55:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3541666666666667) internal successors, (650), 495 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 650 transitions. [2023-11-24 23:55:57,392 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 650 transitions. Word has length 74 [2023-11-24 23:55:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:57,393 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 650 transitions. [2023-11-24 23:55:57,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:57,393 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 650 transitions. [2023-11-24 23:55:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-24 23:55:57,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:57,395 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] [2023-11-24 23:55:57,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:55:57,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:57,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:57,397 INFO L85 PathProgramCache]: Analyzing trace with hash 98797326, now seen corresponding path program 1 times [2023-11-24 23:55:57,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583425453] [2023-11-24 23:55:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:57,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:57,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583425453] [2023-11-24 23:55:57,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583425453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:57,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:57,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:55:57,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626036369] [2023-11-24 23:55:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:57,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:55:57,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:57,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:55:57,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:55:57,826 INFO L87 Difference]: Start difference. First operand 496 states and 650 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:58,895 INFO L93 Difference]: Finished difference Result 1046 states and 1382 transitions. [2023-11-24 23:55:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 23:55:58,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-24 23:55:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:58,901 INFO L225 Difference]: With dead ends: 1046 [2023-11-24 23:55:58,901 INFO L226 Difference]: Without dead ends: 941 [2023-11-24 23:55:58,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-11-24 23:55:58,903 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2027 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:58,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 1211 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:55:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-11-24 23:55:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 496. [2023-11-24 23:55:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3520833333333333) internal successors, (649), 495 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 649 transitions. [2023-11-24 23:55:58,923 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 649 transitions. Word has length 74 [2023-11-24 23:55:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:58,924 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 649 transitions. [2023-11-24 23:55:58,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 649 transitions. [2023-11-24 23:55:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-24 23:55:58,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:58,926 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] [2023-11-24 23:55:58,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:55:58,928 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:55:58,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2064648218, now seen corresponding path program 1 times [2023-11-24 23:55:58,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:58,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833429667] [2023-11-24 23:55:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:58,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:59,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:59,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833429667] [2023-11-24 23:55:59,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833429667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:59,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:59,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:55:59,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737005075] [2023-11-24 23:55:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:59,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:55:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:55:59,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:55:59,342 INFO L87 Difference]: Start difference. First operand 496 states and 649 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:00,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:00,306 INFO L93 Difference]: Finished difference Result 728 states and 956 transitions. [2023-11-24 23:56:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:00,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-24 23:56:00,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:00,311 INFO L225 Difference]: With dead ends: 728 [2023-11-24 23:56:00,311 INFO L226 Difference]: Without dead ends: 584 [2023-11-24 23:56:00,312 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 [2023-11-24 23:56:00,315 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1071 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:00,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1559 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-24 23:56:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 496. [2023-11-24 23:56:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.35) internal successors, (648), 495 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 648 transitions. [2023-11-24 23:56:00,338 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 648 transitions. Word has length 74 [2023-11-24 23:56:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:00,342 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 648 transitions. [2023-11-24 23:56:00,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 648 transitions. [2023-11-24 23:56:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:56:00,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:00,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:00,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:56:00,346 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:00,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1716231595, now seen corresponding path program 1 times [2023-11-24 23:56:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:00,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956936671] [2023-11-24 23:56:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:00,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:00,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956936671] [2023-11-24 23:56:00,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956936671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:00,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137490273] [2023-11-24 23:56:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:00,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:00,792 INFO L87 Difference]: Start difference. First operand 496 states and 648 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:01,947 INFO L93 Difference]: Finished difference Result 1015 states and 1329 transitions. [2023-11-24 23:56:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 [2023-11-24 23:56:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:01,953 INFO L225 Difference]: With dead ends: 1015 [2023-11-24 23:56:01,953 INFO L226 Difference]: Without dead ends: 917 [2023-11-24 23:56:01,954 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 [2023-11-24 23:56:01,954 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1534 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:01,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1727 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:56:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-24 23:56:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 496. [2023-11-24 23:56:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3458333333333334) internal successors, (646), 495 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 646 transitions. [2023-11-24 23:56:01,973 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 646 transitions. Word has length 76 [2023-11-24 23:56:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:01,974 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 646 transitions. [2023-11-24 23:56:01,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 646 transitions. [2023-11-24 23:56:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:56:01,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:01,976 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] [2023-11-24 23:56:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:56:01,976 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:01,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -694606913, now seen corresponding path program 1 times [2023-11-24 23:56:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523579575] [2023-11-24 23:56:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:02,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523579575] [2023-11-24 23:56:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523579575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:02,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:02,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:02,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643374425] [2023-11-24 23:56:02,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:02,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:02,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:02,304 INFO L87 Difference]: Start difference. First operand 496 states and 646 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:03,156 INFO L93 Difference]: Finished difference Result 794 states and 1041 transitions. [2023-11-24 23:56:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:56:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 [2023-11-24 23:56:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:03,161 INFO L225 Difference]: With dead ends: 794 [2023-11-24 23:56:03,161 INFO L226 Difference]: Without dead ends: 584 [2023-11-24 23:56:03,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:56:03,163 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1039 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:03,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1140 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:56:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-24 23:56:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 496. [2023-11-24 23:56:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3416666666666666) internal successors, (644), 495 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 644 transitions. [2023-11-24 23:56:03,186 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 644 transitions. Word has length 76 [2023-11-24 23:56:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:03,186 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 644 transitions. [2023-11-24 23:56:03,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 644 transitions. [2023-11-24 23:56:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:56:03,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:03,190 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] [2023-11-24 23:56:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 23:56:03,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:03,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:03,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1449671967, now seen corresponding path program 1 times [2023-11-24 23:56:03,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:03,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573743222] [2023-11-24 23:56:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:03,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:03,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573743222] [2023-11-24 23:56:03,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573743222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:03,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:03,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:03,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847116481] [2023-11-24 23:56:03,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:03,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:03,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:03,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:03,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:03,554 INFO L87 Difference]: Start difference. First operand 496 states and 644 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:04,631 INFO L93 Difference]: Finished difference Result 1055 states and 1385 transitions. [2023-11-24 23:56:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 23:56:04,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 [2023-11-24 23:56:04,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:04,637 INFO L225 Difference]: With dead ends: 1055 [2023-11-24 23:56:04,637 INFO L226 Difference]: Without dead ends: 941 [2023-11-24 23:56:04,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:56:04,638 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1165 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:04,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1610 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:56:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-11-24 23:56:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 496. [2023-11-24 23:56:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3395833333333333) internal successors, (643), 495 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 643 transitions. [2023-11-24 23:56:04,658 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 643 transitions. Word has length 76 [2023-11-24 23:56:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:04,659 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 643 transitions. [2023-11-24 23:56:04,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 643 transitions. [2023-11-24 23:56:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:56:04,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:04,661 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] [2023-11-24 23:56:04,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 23:56:04,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:04,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -263935870, now seen corresponding path program 1 times [2023-11-24 23:56:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:04,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587480426] [2023-11-24 23:56:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:04,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:04,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587480426] [2023-11-24 23:56:04,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587480426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:04,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:04,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478786231] [2023-11-24 23:56:04,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:04,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:04,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:04,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:04,991 INFO L87 Difference]: Start difference. First operand 496 states and 643 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:06,155 INFO L93 Difference]: Finished difference Result 1009 states and 1316 transitions. [2023-11-24 23:56:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:06,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 [2023-11-24 23:56:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:06,161 INFO L225 Difference]: With dead ends: 1009 [2023-11-24 23:56:06,161 INFO L226 Difference]: Without dead ends: 917 [2023-11-24 23:56:06,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-24 23:56:06,163 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1082 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:06,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1846 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:56:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-24 23:56:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 496. [2023-11-24 23:56:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3375) internal successors, (642), 495 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 642 transitions. [2023-11-24 23:56:06,183 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 642 transitions. Word has length 76 [2023-11-24 23:56:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:06,183 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 642 transitions. [2023-11-24 23:56:06,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 642 transitions. [2023-11-24 23:56:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:56:06,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:06,185 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] [2023-11-24 23:56:06,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 23:56:06,186 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:06,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1457950665, now seen corresponding path program 1 times [2023-11-24 23:56:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:06,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239913199] [2023-11-24 23:56:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:06,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239913199] [2023-11-24 23:56:06,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239913199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:06,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:06,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:06,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410641197] [2023-11-24 23:56:06,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:06,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:06,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:06,545 INFO L87 Difference]: Start difference. First operand 496 states and 642 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:07,507 INFO L93 Difference]: Finished difference Result 1009 states and 1314 transitions. [2023-11-24 23:56:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:07,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 [2023-11-24 23:56:07,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:07,513 INFO L225 Difference]: With dead ends: 1009 [2023-11-24 23:56:07,513 INFO L226 Difference]: Without dead ends: 917 [2023-11-24 23:56:07,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-24 23:56:07,514 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1450 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:07,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 1542 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:07,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-24 23:56:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 496. [2023-11-24 23:56:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3354166666666667) internal successors, (641), 495 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 641 transitions. [2023-11-24 23:56:07,533 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 641 transitions. Word has length 76 [2023-11-24 23:56:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:07,533 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 641 transitions. [2023-11-24 23:56:07,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 641 transitions. [2023-11-24 23:56:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:56:07,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:07,535 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] [2023-11-24 23:56:07,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 23:56:07,536 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:07,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:07,537 INFO L85 PathProgramCache]: Analyzing trace with hash -995702185, now seen corresponding path program 1 times [2023-11-24 23:56:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:07,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097246717] [2023-11-24 23:56:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:07,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097246717] [2023-11-24 23:56:07,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097246717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104607416] [2023-11-24 23:56:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:07,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:07,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:07,887 INFO L87 Difference]: Start difference. First operand 496 states and 641 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:08,916 INFO L93 Difference]: Finished difference Result 1005 states and 1309 transitions. [2023-11-24 23:56:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 [2023-11-24 23:56:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:08,921 INFO L225 Difference]: With dead ends: 1005 [2023-11-24 23:56:08,921 INFO L226 Difference]: Without dead ends: 917 [2023-11-24 23:56:08,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-24 23:56:08,922 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1512 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:08,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1514 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:56:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-24 23:56:08,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 496. [2023-11-24 23:56:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3333333333333333) internal successors, (640), 495 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 640 transitions. [2023-11-24 23:56:08,938 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 640 transitions. Word has length 76 [2023-11-24 23:56:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:08,939 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 640 transitions. [2023-11-24 23:56:08,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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) [2023-11-24 23:56:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 640 transitions. [2023-11-24 23:56:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:08,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:08,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:08,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 23:56:08,941 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:08,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:08,942 INFO L85 PathProgramCache]: Analyzing trace with hash 513544580, now seen corresponding path program 1 times [2023-11-24 23:56:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:08,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223711203] [2023-11-24 23:56:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:08,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:09,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223711203] [2023-11-24 23:56:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223711203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:09,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103305566] [2023-11-24 23:56:09,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:09,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:09,297 INFO L87 Difference]: Start difference. First operand 496 states and 640 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:10,269 INFO L93 Difference]: Finished difference Result 1021 states and 1327 transitions. [2023-11-24 23:56:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:10,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:10,275 INFO L225 Difference]: With dead ends: 1021 [2023-11-24 23:56:10,275 INFO L226 Difference]: Without dead ends: 917 [2023-11-24 23:56:10,276 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 [2023-11-24 23:56:10,277 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1633 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:10,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1772 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-24 23:56:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 496. [2023-11-24 23:56:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3291666666666666) internal successors, (638), 495 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 638 transitions. [2023-11-24 23:56:10,294 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 638 transitions. Word has length 78 [2023-11-24 23:56:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:10,295 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 638 transitions. [2023-11-24 23:56:10,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 638 transitions. [2023-11-24 23:56:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:10,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:10,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 23:56:10,297 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:10,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2002078059, now seen corresponding path program 1 times [2023-11-24 23:56:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:10,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394720983] [2023-11-24 23:56:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:10,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:10,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:10,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394720983] [2023-11-24 23:56:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394720983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:10,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:10,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:10,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394014192] [2023-11-24 23:56:10,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:10,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:10,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:10,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:10,731 INFO L87 Difference]: Start difference. First operand 496 states and 638 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:11,733 INFO L93 Difference]: Finished difference Result 981 states and 1263 transitions. [2023-11-24 23:56:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:11,738 INFO L225 Difference]: With dead ends: 981 [2023-11-24 23:56:11,739 INFO L226 Difference]: Without dead ends: 893 [2023-11-24 23:56:11,739 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 [2023-11-24 23:56:11,740 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1532 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:11,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1651 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-11-24 23:56:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 496. [2023-11-24 23:56:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.325) internal successors, (636), 495 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 636 transitions. [2023-11-24 23:56:11,756 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 636 transitions. Word has length 78 [2023-11-24 23:56:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:11,756 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 636 transitions. [2023-11-24 23:56:11,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 636 transitions. [2023-11-24 23:56:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:11,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:11,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:11,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 23:56:11,759 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:11,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:11,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1513420061, now seen corresponding path program 1 times [2023-11-24 23:56:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:11,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876504553] [2023-11-24 23:56:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:11,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:12,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876504553] [2023-11-24 23:56:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876504553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:12,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003454058] [2023-11-24 23:56:12,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:12,025 INFO L87 Difference]: Start difference. First operand 496 states and 636 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:13,032 INFO L93 Difference]: Finished difference Result 1085 states and 1410 transitions. [2023-11-24 23:56:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 23:56:13,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:13,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:13,038 INFO L225 Difference]: With dead ends: 1085 [2023-11-24 23:56:13,038 INFO L226 Difference]: Without dead ends: 941 [2023-11-24 23:56:13,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:56:13,039 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1585 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:13,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1640 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-11-24 23:56:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 496. [2023-11-24 23:56:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3208333333333333) internal successors, (634), 495 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 634 transitions. [2023-11-24 23:56:13,059 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 634 transitions. Word has length 78 [2023-11-24 23:56:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:13,060 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 634 transitions. [2023-11-24 23:56:13,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 634 transitions. [2023-11-24 23:56:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:13,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:13,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:13,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 23:56:13,063 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:13,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -675860338, now seen corresponding path program 1 times [2023-11-24 23:56:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638304531] [2023-11-24 23:56:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:13,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:13,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638304531] [2023-11-24 23:56:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638304531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:13,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:13,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 23:56:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816566066] [2023-11-24 23:56:13,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:13,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:56:13,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:56:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:56:13,695 INFO L87 Difference]: Start difference. First operand 496 states and 634 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:15,822 INFO L93 Difference]: Finished difference Result 1412 states and 1842 transitions. [2023-11-24 23:56:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 23:56:15,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:15,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:15,828 INFO L225 Difference]: With dead ends: 1412 [2023-11-24 23:56:15,828 INFO L226 Difference]: Without dead ends: 1395 [2023-11-24 23:56:15,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-11-24 23:56:15,830 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 3090 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:15,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3090 Valid, 1790 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:56:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2023-11-24 23:56:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 504. [2023-11-24 23:56:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3155737704918034) internal successors, (642), 503 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 642 transitions. [2023-11-24 23:56:15,849 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 642 transitions. Word has length 78 [2023-11-24 23:56:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:15,850 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 642 transitions. [2023-11-24 23:56:15,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 642 transitions. [2023-11-24 23:56:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:15,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:15,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:15,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 23:56:15,852 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:15,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 812673141, now seen corresponding path program 1 times [2023-11-24 23:56:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758000003] [2023-11-24 23:56:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:15,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:16,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758000003] [2023-11-24 23:56:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758000003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:16,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:16,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557242049] [2023-11-24 23:56:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:16,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:16,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:16,158 INFO L87 Difference]: Start difference. First operand 504 states and 642 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:17,199 INFO L93 Difference]: Finished difference Result 906 states and 1154 transitions. [2023-11-24 23:56:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:17,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:17,205 INFO L225 Difference]: With dead ends: 906 [2023-11-24 23:56:17,205 INFO L226 Difference]: Without dead ends: 901 [2023-11-24 23:56:17,205 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 [2023-11-24 23:56:17,206 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1524 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1652 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:56:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-11-24 23:56:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 504. [2023-11-24 23:56:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3114754098360655) internal successors, (640), 503 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 640 transitions. [2023-11-24 23:56:17,222 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 640 transitions. Word has length 78 [2023-11-24 23:56:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:17,223 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 640 transitions. [2023-11-24 23:56:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 640 transitions. [2023-11-24 23:56:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:17,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:17,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 23:56:17,225 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:17,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash 406757360, now seen corresponding path program 1 times [2023-11-24 23:56:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702044329] [2023-11-24 23:56:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:17,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702044329] [2023-11-24 23:56:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702044329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:17,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:17,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 23:56:17,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042739317] [2023-11-24 23:56:17,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:17,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:56:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:56:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:56:17,719 INFO L87 Difference]: Start difference. First operand 504 states and 640 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:19,424 INFO L93 Difference]: Finished difference Result 1324 states and 1715 transitions. [2023-11-24 23:56:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 23:56:19,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:19,430 INFO L225 Difference]: With dead ends: 1324 [2023-11-24 23:56:19,430 INFO L226 Difference]: Without dead ends: 1319 [2023-11-24 23:56:19,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-11-24 23:56:19,431 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 3299 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:19,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3299 Valid, 1451 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:56:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-11-24 23:56:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 512. [2023-11-24 23:56:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 1.3064516129032258) internal successors, (648), 511 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 648 transitions. [2023-11-24 23:56:19,449 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 648 transitions. Word has length 78 [2023-11-24 23:56:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 648 transitions. [2023-11-24 23:56:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 648 transitions. [2023-11-24 23:56:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:19,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:19,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:19,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 23:56:19,452 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:19,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:19,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1340403830, now seen corresponding path program 1 times [2023-11-24 23:56:19,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:19,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898897510] [2023-11-24 23:56:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:19,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:19,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:19,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898897510] [2023-11-24 23:56:19,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898897510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:19,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407793408] [2023-11-24 23:56:19,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:19,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:19,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:19,761 INFO L87 Difference]: Start difference. First operand 512 states and 648 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:20,737 INFO L93 Difference]: Finished difference Result 985 states and 1258 transitions. [2023-11-24 23:56:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:20,742 INFO L225 Difference]: With dead ends: 985 [2023-11-24 23:56:20,742 INFO L226 Difference]: Without dead ends: 901 [2023-11-24 23:56:20,743 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 [2023-11-24 23:56:20,743 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1528 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:20,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1617 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-11-24 23:56:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 512. [2023-11-24 23:56:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 1.3024193548387097) internal successors, (646), 511 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 646 transitions. [2023-11-24 23:56:20,759 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 646 transitions. Word has length 78 [2023-11-24 23:56:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:20,759 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 646 transitions. [2023-11-24 23:56:20,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 646 transitions. [2023-11-24 23:56:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:20,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:20,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:20,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-24 23:56:20,762 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:20,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1562286502, now seen corresponding path program 1 times [2023-11-24 23:56:20,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:20,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903291498] [2023-11-24 23:56:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:20,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:21,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:21,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903291498] [2023-11-24 23:56:21,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903291498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:21,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:21,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:56:21,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395900762] [2023-11-24 23:56:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:21,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:21,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:21,080 INFO L87 Difference]: Start difference. First operand 512 states and 646 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:22,068 INFO L93 Difference]: Finished difference Result 986 states and 1257 transitions. [2023-11-24 23:56:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:22,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-24 23:56:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:22,073 INFO L225 Difference]: With dead ends: 986 [2023-11-24 23:56:22,073 INFO L226 Difference]: Without dead ends: 901 [2023-11-24 23:56:22,074 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 [2023-11-24 23:56:22,074 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1518 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:22,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1637 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-11-24 23:56:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 512. [2023-11-24 23:56:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 1.3004032258064515) internal successors, (645), 511 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 645 transitions. [2023-11-24 23:56:22,088 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 645 transitions. Word has length 78 [2023-11-24 23:56:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:22,089 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 645 transitions. [2023-11-24 23:56:22,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 645 transitions. [2023-11-24 23:56:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:56:22,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:22,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:22,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-24 23:56:22,091 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-11-24 23:56:22,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:22,092 INFO L85 PathProgramCache]: Analyzing trace with hash 978066431, now seen corresponding path program 1 times [2023-11-24 23:56:22,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:22,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124820266] [2023-11-24 23:56:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:22,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:22,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:22,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124820266] [2023-11-24 23:56:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124820266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:22,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:22,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 23:56:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174094604] [2023-11-24 23:56:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:22,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:56:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:56:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:56:22,544 INFO L87 Difference]: Start difference. First operand 512 states and 645 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)