./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/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 be26aee373dea132861f472d332ff07e499ea6fa9932dcbe3fa1a7df50848fdc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:20:07,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:07,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:20:07,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:07,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:07,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:07,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:07,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:07,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:07,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:07,383 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:07,384 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:07,384 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:07,385 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:20:07,386 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:07,387 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:07,387 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:20:07,388 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:20:07,389 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:07,389 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:20:07,390 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:20:07,391 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:20:07,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:07,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:07,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:20:07,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:20:07,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:20:07,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:07,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:07,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:07,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:07,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:20:07,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:07,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:07,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:07,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:07,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:07,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:07,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:07,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:07,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:07,405 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:20:07,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:20:07,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:07,406 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:07,406 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:07,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:07,407 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be26aee373dea132861f472d332ff07e499ea6fa9932dcbe3fa1a7df50848fdc [2023-11-24 23:20:07,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:07,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:07,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:07,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:07,778 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:07,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-11-24 23:20:10,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:11,312 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:11,313 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-11-24 23:20:11,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/data/4e753d71a/24a554be0dc846c7aac6f67cf79f9d27/FLAG007ec9a95 [2023-11-24 23:20:11,353 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/data/4e753d71a/24a554be0dc846c7aac6f67cf79f9d27 [2023-11-24 23:20:11,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:11,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:11,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:11,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:11,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:11,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:11" (1/1) ... [2023-11-24 23:20:11,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6a614c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:11, skipping insertion in model container [2023-11-24 23:20:11,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:11" (1/1) ... [2023-11-24 23:20:11,469 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:11,842 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15187,15200] [2023-11-24 23:20:11,858 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15834,15847] [2023-11-24 23:20:11,878 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17175,17188] [2023-11-24 23:20:11,895 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18235,18248] [2023-11-24 23:20:11,991 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27520,27533] [2023-11-24 23:20:12,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:12,099 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:12,314 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15187,15200] [2023-11-24 23:20:12,337 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15834,15847] [2023-11-24 23:20:12,363 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17175,17188] [2023-11-24 23:20:12,404 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18235,18248] [2023-11-24 23:20:12,501 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_de3a750f-9871-471b-8d8e-981e2a9d7d0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27520,27533] [2023-11-24 23:20:12,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:12,589 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:12,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12 WrapperNode [2023-11-24 23:20:12,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:12,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:12,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:12,593 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:12,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,738 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1748 [2023-11-24 23:20:12,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:12,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:12,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:12,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:12,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:12,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:12,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:12,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:12,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (1/1) ... [2023-11-24 23:20:12,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:12,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:12,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3a750f-9871-471b-8d8e-981e2a9d7d0f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:20:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:13,141 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:13,142 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:14,589 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:20:15,175 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:20:15,176 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:20:15,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:15 BoogieIcfgContainer [2023-11-24 23:20:15,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:20:15,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:20:15,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:20:15,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:20:15,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:11" (1/3) ... [2023-11-24 23:20:15,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd3f15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:15, skipping insertion in model container [2023-11-24 23:20:15,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:12" (2/3) ... [2023-11-24 23:20:15,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd3f15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:15, skipping insertion in model container [2023-11-24 23:20:15,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:15" (3/3) ... [2023-11-24 23:20:15,187 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-11-24 23:20:15,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:20:15,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-24 23:20:15,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:20:15,274 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;@54e18577, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:20:15,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 23:20:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 290 states have (on average 1.8172413793103448) internal successors, (527), 301 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 23:20:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-24 23:20:15,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:15,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:15,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:15,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1059076404, now seen corresponding path program 1 times [2023-11-24 23:20:15,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:15,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87510657] [2023-11-24 23:20:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:17,070 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 23:20:17,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87510657] [2023-11-24 23:20:17,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87510657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:17,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:17,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:20:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139665832] [2023-11-24 23:20:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:17,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:17,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:17,136 INFO L87 Difference]: Start difference. First operand has 302 states, 290 states have (on average 1.8172413793103448) internal successors, (527), 301 states have internal predecessors, (527), 0 states have call successors, (0), 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 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:20:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:17,650 INFO L93 Difference]: Finished difference Result 866 states and 1458 transitions. [2023-11-24 23:20:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:17,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-11-24 23:20:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:17,671 INFO L225 Difference]: With dead ends: 866 [2023-11-24 23:20:17,671 INFO L226 Difference]: Without dead ends: 651 [2023-11-24 23:20:17,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:17,679 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 928 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:17,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 1616 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:20:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-11-24 23:20:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 595. [2023-11-24 23:20:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 590 states have (on average 1.3644067796610169) internal successors, (805), 594 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 23:20:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 805 transitions. [2023-11-24 23:20:17,772 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 805 transitions. Word has length 114 [2023-11-24 23:20:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:17,773 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 805 transitions. [2023-11-24 23:20:17,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:20:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 805 transitions. [2023-11-24 23:20:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-24 23:20:17,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:17,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:17,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:20:17,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:17,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:17,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1058645428, now seen corresponding path program 1 times [2023-11-24 23:20:17,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:17,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432509052] [2023-11-24 23:20:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:18,806 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 23:20:18,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:18,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432509052] [2023-11-24 23:20:18,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432509052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:18,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:18,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:18,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485951940] [2023-11-24 23:20:18,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:18,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:18,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:18,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:18,812 INFO L87 Difference]: Start difference. First operand 595 states and 805 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:20:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:18,994 INFO L93 Difference]: Finished difference Result 1590 states and 2151 transitions. [2023-11-24 23:20:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:18,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-11-24 23:20:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:19,005 INFO L225 Difference]: With dead ends: 1590 [2023-11-24 23:20:19,006 INFO L226 Difference]: Without dead ends: 1085 [2023-11-24 23:20:19,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:19,014 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 979 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:19,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 911 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2023-11-24 23:20:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1052. [2023-11-24 23:20:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1047 states have (on average 1.3629417382999045) internal successors, (1427), 1051 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states 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 23:20:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1427 transitions. [2023-11-24 23:20:19,078 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1427 transitions. Word has length 114 [2023-11-24 23:20:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:19,078 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1427 transitions. [2023-11-24 23:20:19,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:20:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1427 transitions. [2023-11-24 23:20:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-24 23:20:19,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:19,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:20:19,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:19,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash 958501103, now seen corresponding path program 1 times [2023-11-24 23:20:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:19,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137620307] [2023-11-24 23:20:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:19,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:19,244 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 23:20:19,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137620307] [2023-11-24 23:20:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137620307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:19,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:19,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:19,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551924629] [2023-11-24 23:20:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:19,258 INFO L87 Difference]: Start difference. First operand 1052 states and 1427 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 23:20:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:19,416 INFO L93 Difference]: Finished difference Result 2555 states and 3535 transitions. [2023-11-24 23:20:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:19,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-11-24 23:20:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:19,426 INFO L225 Difference]: With dead ends: 2555 [2023-11-24 23:20:19,426 INFO L226 Difference]: Without dead ends: 1579 [2023-11-24 23:20:19,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:19,429 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 222 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:19,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 722 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-11-24 23:20:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1454. [2023-11-24 23:20:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1449 states have (on average 1.4030365769496205) internal successors, (2033), 1453 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states 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 23:20:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2033 transitions. [2023-11-24 23:20:19,479 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2033 transitions. Word has length 116 [2023-11-24 23:20:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:19,479 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 2033 transitions. [2023-11-24 23:20:19,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 23:20:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2033 transitions. [2023-11-24 23:20:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-24 23:20:19,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:19,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:19,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:20:19,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:19,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1142689201, now seen corresponding path program 1 times [2023-11-24 23:20:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6257247] [2023-11-24 23:20:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:19,599 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 23:20:19,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6257247] [2023-11-24 23:20:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6257247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:19,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:19,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599457295] [2023-11-24 23:20:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:19,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:19,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:19,603 INFO L87 Difference]: Start difference. First operand 1454 states and 2033 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 23:20:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:19,774 INFO L93 Difference]: Finished difference Result 3650 states and 5190 transitions. [2023-11-24 23:20:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:19,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-11-24 23:20:19,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:19,788 INFO L225 Difference]: With dead ends: 3650 [2023-11-24 23:20:19,788 INFO L226 Difference]: Without dead ends: 2313 [2023-11-24 23:20:19,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:19,799 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 202 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:19,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 703 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2023-11-24 23:20:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2214. [2023-11-24 23:20:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2209 states have (on average 1.4354911724762336) internal successors, (3171), 2213 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states 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 23:20:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3171 transitions. [2023-11-24 23:20:19,877 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3171 transitions. Word has length 116 [2023-11-24 23:20:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:19,877 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3171 transitions. [2023-11-24 23:20:19,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 23:20:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3171 transitions. [2023-11-24 23:20:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-24 23:20:19,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:19,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:19,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:20:19,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:19,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 325853271, now seen corresponding path program 1 times [2023-11-24 23:20:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:19,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511603277] [2023-11-24 23:20:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:20,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:20,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511603277] [2023-11-24 23:20:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511603277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:20,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477581671] [2023-11-24 23:20:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:20,128 INFO L87 Difference]: Start difference. First operand 2214 states and 3171 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 23:20:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:20,365 INFO L93 Difference]: Finished difference Result 4358 states and 6254 transitions. [2023-11-24 23:20:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:20,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-24 23:20:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:20,378 INFO L225 Difference]: With dead ends: 4358 [2023-11-24 23:20:20,378 INFO L226 Difference]: Without dead ends: 2214 [2023-11-24 23:20:20,381 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 23:20:20,382 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1036 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:20,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 293 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2023-11-24 23:20:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2214. [2023-11-24 23:20:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2209 states have (on average 1.4182888184698959) internal successors, (3133), 2213 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states 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 23:20:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3133 transitions. [2023-11-24 23:20:20,446 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3133 transitions. Word has length 119 [2023-11-24 23:20:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:20,447 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3133 transitions. [2023-11-24 23:20:20,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 23:20:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3133 transitions. [2023-11-24 23:20:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-24 23:20:20,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:20,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:20,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:20:20,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:20,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash -193328398, now seen corresponding path program 1 times [2023-11-24 23:20:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:20,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222156049] [2023-11-24 23:20:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:20,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:21,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:21,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222156049] [2023-11-24 23:20:21,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222156049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:21,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:21,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:21,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456404807] [2023-11-24 23:20:21,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:21,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:21,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:21,389 INFO L87 Difference]: Start difference. First operand 2214 states and 3133 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 23:20:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:21,579 INFO L93 Difference]: Finished difference Result 4757 states and 6823 transitions. [2023-11-24 23:20:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-24 23:20:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:21,601 INFO L225 Difference]: With dead ends: 4757 [2023-11-24 23:20:21,602 INFO L226 Difference]: Without dead ends: 2745 [2023-11-24 23:20:21,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:21,607 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 913 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:21,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 932 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2023-11-24 23:20:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2724. [2023-11-24 23:20:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2719 states have (on average 1.429201912467819) internal successors, (3886), 2723 states have internal predecessors, (3886), 0 states have call successors, (0), 0 states 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 23:20:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3886 transitions. [2023-11-24 23:20:21,742 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3886 transitions. Word has length 119 [2023-11-24 23:20:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:21,743 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 3886 transitions. [2023-11-24 23:20:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 23:20:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3886 transitions. [2023-11-24 23:20:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-24 23:20:21,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:21,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:21,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:20:21,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:21,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1386971452, now seen corresponding path program 1 times [2023-11-24 23:20:21,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:21,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152744024] [2023-11-24 23:20:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:21,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:21,881 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 23:20:21,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:21,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152744024] [2023-11-24 23:20:21,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152744024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:21,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:21,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:21,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432152406] [2023-11-24 23:20:21,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:21,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:21,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:21,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:21,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:21,885 INFO L87 Difference]: Start difference. First operand 2724 states and 3886 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 23:20:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:22,034 INFO L93 Difference]: Finished difference Result 7173 states and 10386 transitions. [2023-11-24 23:20:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:22,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2023-11-24 23:20:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:22,061 INFO L225 Difference]: With dead ends: 7173 [2023-11-24 23:20:22,061 INFO L226 Difference]: Without dead ends: 4490 [2023-11-24 23:20:22,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:22,066 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 162 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:22,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 681 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2023-11-24 23:20:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4488. [2023-11-24 23:20:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4483 states have (on average 1.443229979924158) internal successors, (6470), 4487 states have internal predecessors, (6470), 0 states have call successors, (0), 0 states 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 23:20:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6470 transitions. [2023-11-24 23:20:22,219 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6470 transitions. Word has length 120 [2023-11-24 23:20:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:22,219 INFO L495 AbstractCegarLoop]: Abstraction has 4488 states and 6470 transitions. [2023-11-24 23:20:22,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 23:20:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6470 transitions. [2023-11-24 23:20:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-24 23:20:22,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:22,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:22,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:20:22,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:22,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1541260363, now seen corresponding path program 1 times [2023-11-24 23:20:22,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:22,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666376099] [2023-11-24 23:20:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:22,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:23,337 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 23:20:23,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666376099] [2023-11-24 23:20:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666376099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:23,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:23,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999921813] [2023-11-24 23:20:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:23,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:23,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:23,340 INFO L87 Difference]: Start difference. First operand 4488 states and 6470 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:23,564 INFO L93 Difference]: Finished difference Result 10887 states and 15732 transitions. [2023-11-24 23:20:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-11-24 23:20:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:23,603 INFO L225 Difference]: With dead ends: 10887 [2023-11-24 23:20:23,603 INFO L226 Difference]: Without dead ends: 6613 [2023-11-24 23:20:23,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:23,610 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 561 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:23,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 899 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6613 states. [2023-11-24 23:20:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6613 to 6592. [2023-11-24 23:20:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6587 states have (on average 1.4285714285714286) internal successors, (9410), 6591 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states 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 23:20:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 9410 transitions. [2023-11-24 23:20:23,805 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 9410 transitions. Word has length 123 [2023-11-24 23:20:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:23,805 INFO L495 AbstractCegarLoop]: Abstraction has 6592 states and 9410 transitions. [2023-11-24 23:20:23,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 9410 transitions. [2023-11-24 23:20:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-24 23:20:23,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:23,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:20:23,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:23,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash 245180374, now seen corresponding path program 1 times [2023-11-24 23:20:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:23,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472439033] [2023-11-24 23:20:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:24,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472439033] [2023-11-24 23:20:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472439033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:24,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:24,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603843558] [2023-11-24 23:20:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:24,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:24,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:24,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:24,068 INFO L87 Difference]: Start difference. First operand 6592 states and 9410 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:24,322 INFO L93 Difference]: Finished difference Result 13075 states and 18687 transitions. [2023-11-24 23:20:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:24,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-11-24 23:20:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:24,370 INFO L225 Difference]: With dead ends: 13075 [2023-11-24 23:20:24,371 INFO L226 Difference]: Without dead ends: 6592 [2023-11-24 23:20:24,378 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 23:20:24,380 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 999 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:24,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 297 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2023-11-24 23:20:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 6592. [2023-11-24 23:20:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6587 states have (on average 1.4143008957036587) internal successors, (9316), 6591 states have internal predecessors, (9316), 0 states have call successors, (0), 0 states 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 23:20:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 9316 transitions. [2023-11-24 23:20:24,561 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 9316 transitions. Word has length 123 [2023-11-24 23:20:24,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:24,561 INFO L495 AbstractCegarLoop]: Abstraction has 6592 states and 9316 transitions. [2023-11-24 23:20:24,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 9316 transitions. [2023-11-24 23:20:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-24 23:20:24,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:24,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:24,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:20:24,566 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:24,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:24,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1801361403, now seen corresponding path program 1 times [2023-11-24 23:20:24,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978894158] [2023-11-24 23:20:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:26,045 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 23:20:26,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978894158] [2023-11-24 23:20:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978894158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:26,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 23:20:26,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700750463] [2023-11-24 23:20:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:26,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:20:26,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:20:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:20:26,053 INFO L87 Difference]: Start difference. First operand 6592 states and 9316 transitions. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:27,809 INFO L93 Difference]: Finished difference Result 19562 states and 28048 transitions. [2023-11-24 23:20:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:20:27,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-11-24 23:20:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:27,848 INFO L225 Difference]: With dead ends: 19562 [2023-11-24 23:20:27,848 INFO L226 Difference]: Without dead ends: 14625 [2023-11-24 23:20:27,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2023-11-24 23:20:27,859 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2432 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:27,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 2709 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 23:20:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14625 states. [2023-11-24 23:20:28,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14625 to 11560. [2023-11-24 23:20:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11560 states, 11555 states have (on average 1.41964517524881) internal successors, (16404), 11559 states have internal predecessors, (16404), 0 states have call successors, (0), 0 states 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 23:20:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11560 states to 11560 states and 16404 transitions. [2023-11-24 23:20:28,193 INFO L78 Accepts]: Start accepts. Automaton has 11560 states and 16404 transitions. Word has length 123 [2023-11-24 23:20:28,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:28,194 INFO L495 AbstractCegarLoop]: Abstraction has 11560 states and 16404 transitions. [2023-11-24 23:20:28,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 11560 states and 16404 transitions. [2023-11-24 23:20:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-24 23:20:28,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:28,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:28,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:20:28,198 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:28,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1800930427, now seen corresponding path program 1 times [2023-11-24 23:20:28,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:28,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432785110] [2023-11-24 23:20:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:28,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:34,852 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 23:20:34,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:34,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432785110] [2023-11-24 23:20:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432785110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:34,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:34,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-24 23:20:34,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798599285] [2023-11-24 23:20:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:34,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 23:20:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:34,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 23:20:34,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-11-24 23:20:34,855 INFO L87 Difference]: Start difference. First operand 11560 states and 16404 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 23 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:42,007 INFO L93 Difference]: Finished difference Result 35239 states and 49971 transitions. [2023-11-24 23:20:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-24 23:20:42,007 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 23 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-11-24 23:20:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:42,074 INFO L225 Difference]: With dead ends: 35239 [2023-11-24 23:20:42,074 INFO L226 Difference]: Without dead ends: 23709 [2023-11-24 23:20:42,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=437, Invalid=1915, Unknown=0, NotChecked=0, Total=2352 [2023-11-24 23:20:42,095 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 3108 mSDsluCounter, 6816 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3108 SdHoareTripleChecker+Valid, 7374 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:42,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3108 Valid, 7374 Invalid, 3298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-24 23:20:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23709 states. [2023-11-24 23:20:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23709 to 14955. [2023-11-24 23:20:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14955 states, 14950 states have (on average 1.4177257525083613) internal successors, (21195), 14954 states have internal predecessors, (21195), 0 states have call successors, (0), 0 states 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 23:20:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14955 states to 14955 states and 21195 transitions. [2023-11-24 23:20:42,513 INFO L78 Accepts]: Start accepts. Automaton has 14955 states and 21195 transitions. Word has length 123 [2023-11-24 23:20:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:42,514 INFO L495 AbstractCegarLoop]: Abstraction has 14955 states and 21195 transitions. [2023-11-24 23:20:42,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 23 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 14955 states and 21195 transitions. [2023-11-24 23:20:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-24 23:20:42,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:42,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:42,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 23:20:42,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:42,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1264159112, now seen corresponding path program 1 times [2023-11-24 23:20:42,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:42,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289263864] [2023-11-24 23:20:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:43,572 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 23:20:43,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:43,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289263864] [2023-11-24 23:20:43,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289263864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:43,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:43,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:20:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375821527] [2023-11-24 23:20:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:20:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:20:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:43,575 INFO L87 Difference]: Start difference. First operand 14955 states and 21195 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:43,929 INFO L93 Difference]: Finished difference Result 30240 states and 42927 transitions. [2023-11-24 23:20:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:20:43,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-11-24 23:20:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:43,972 INFO L225 Difference]: With dead ends: 30240 [2023-11-24 23:20:43,972 INFO L226 Difference]: Without dead ends: 20062 [2023-11-24 23:20:43,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:43,988 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1776 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:43,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 1182 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20062 states. [2023-11-24 23:20:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20062 to 16112. [2023-11-24 23:20:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16112 states, 16107 states have (on average 1.4173340783510275) internal successors, (22829), 16111 states have internal predecessors, (22829), 0 states have call successors, (0), 0 states 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 23:20:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16112 states to 16112 states and 22829 transitions. [2023-11-24 23:20:44,308 INFO L78 Accepts]: Start accepts. Automaton has 16112 states and 22829 transitions. Word has length 123 [2023-11-24 23:20:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:44,308 INFO L495 AbstractCegarLoop]: Abstraction has 16112 states and 22829 transitions. [2023-11-24 23:20:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 16112 states and 22829 transitions. [2023-11-24 23:20:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-24 23:20:44,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:44,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:44,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 23:20:44,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:44,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:44,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1016470292, now seen corresponding path program 1 times [2023-11-24 23:20:44,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:44,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727419640] [2023-11-24 23:20:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:44,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:45,081 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 23:20:45,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:45,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727419640] [2023-11-24 23:20:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727419640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:45,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:45,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:45,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727056407] [2023-11-24 23:20:45,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:45,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:45,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:45,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:45,084 INFO L87 Difference]: Start difference. First operand 16112 states and 22829 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 23:20:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:45,318 INFO L93 Difference]: Finished difference Result 21731 states and 30787 transitions. [2023-11-24 23:20:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:45,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-24 23:20:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:45,357 INFO L225 Difference]: With dead ends: 21731 [2023-11-24 23:20:45,357 INFO L226 Difference]: Without dead ends: 18418 [2023-11-24 23:20:45,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:20:45,367 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1204 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:45,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 786 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18418 states. [2023-11-24 23:20:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18418 to 16103. [2023-11-24 23:20:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16103 states, 16098 states have (on average 1.4164492483538327) internal successors, (22802), 16102 states have internal predecessors, (22802), 0 states have call successors, (0), 0 states 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 23:20:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 22802 transitions. [2023-11-24 23:20:45,643 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 22802 transitions. Word has length 124 [2023-11-24 23:20:45,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:45,643 INFO L495 AbstractCegarLoop]: Abstraction has 16103 states and 22802 transitions. [2023-11-24 23:20:45,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 23:20:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 22802 transitions. [2023-11-24 23:20:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-24 23:20:45,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:45,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:45,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 23:20:45,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:45,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash 169277128, now seen corresponding path program 1 times [2023-11-24 23:20:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:45,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767153464] [2023-11-24 23:20:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:45,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:46,418 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 23:20:46,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:46,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767153464] [2023-11-24 23:20:46,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767153464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:46,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:46,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:46,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719127633] [2023-11-24 23:20:46,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:46,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:20:46,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:20:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:46,421 INFO L87 Difference]: Start difference. First operand 16103 states and 22802 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 23:20:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:46,651 INFO L93 Difference]: Finished difference Result 29152 states and 41479 transitions. [2023-11-24 23:20:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:20:46,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-11-24 23:20:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:46,691 INFO L225 Difference]: With dead ends: 29152 [2023-11-24 23:20:46,691 INFO L226 Difference]: Without dead ends: 18246 [2023-11-24 23:20:46,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:46,705 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 806 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:46,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 700 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18246 states. [2023-11-24 23:20:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18246 to 14964. [2023-11-24 23:20:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14964 states, 14959 states have (on average 1.4147336051875126) internal successors, (21163), 14963 states have internal predecessors, (21163), 0 states have call successors, (0), 0 states 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 23:20:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14964 states to 14964 states and 21163 transitions. [2023-11-24 23:20:47,081 INFO L78 Accepts]: Start accepts. Automaton has 14964 states and 21163 transitions. Word has length 127 [2023-11-24 23:20:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:47,082 INFO L495 AbstractCegarLoop]: Abstraction has 14964 states and 21163 transitions. [2023-11-24 23:20:47,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 23:20:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 14964 states and 21163 transitions. [2023-11-24 23:20:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-24 23:20:47,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:47,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:47,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 23:20:47,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-24 23:20:47,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1497192211, now seen corresponding path program 1 times [2023-11-24 23:20:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:47,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885023893] [2023-11-24 23:20:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat