./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/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 7dc718442bb91da0bdb0fa6a159b603baccf5b9195c06341082ea90462d0b755 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:08:07,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:08:08,032 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:08:08,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:08:08,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:08:08,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:08:08,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:08:08,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:08:08,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:08:08,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:08:08,089 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:08:08,091 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:08:08,091 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:08:08,093 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:08:08,094 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:08:08,094 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:08:08,095 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:08:08,095 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:08:08,096 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:08:08,096 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:08:08,097 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:08:08,098 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:08:08,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:08:08,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:08:08,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:08:08,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:08:08,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:08:08,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:08:08,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:08:08,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:08:08,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:08:08,104 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:08:08,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:08:08,105 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:08:08,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:08:08,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:08:08,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:08:08,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:08:08,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:08:08,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:08:08,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:08:08,108 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:08:08,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:08:08,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:08:08,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:08:08,110 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:08:08,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:08:08,111 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dc718442bb91da0bdb0fa6a159b603baccf5b9195c06341082ea90462d0b755 [2023-11-25 00:08:08,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:08:08,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:08:08,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:08:08,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:08:08,503 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:08:08,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-11-25 00:08:11,708 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:08:12,352 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:08:12,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-11-25 00:08:12,403 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/data/1ff45d849/91c0750b69c942ea8d3ee15ca785dce4/FLAG08c504b44 [2023-11-25 00:08:12,420 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/data/1ff45d849/91c0750b69c942ea8d3ee15ca785dce4 [2023-11-25 00:08:12,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:08:12,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:08:12,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:08:12,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:08:12,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:08:12,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:08:12" (1/1) ... [2023-11-25 00:08:12,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375368e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:12, skipping insertion in model container [2023-11-25 00:08:12,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:08:12" (1/1) ... [2023-11-25 00:08:12,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:08:13,496 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26861,26874] [2023-11-25 00:08:13,537 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33212,33225] [2023-11-25 00:08:13,727 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57844,57857] [2023-11-25 00:08:13,775 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65899,65912] [2023-11-25 00:08:13,829 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71726,71739] [2023-11-25 00:08:13,875 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82469,82482] [2023-11-25 00:08:13,901 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90414,90427] [2023-11-25 00:08:13,922 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97642,97655] [2023-11-25 00:08:14,071 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132349,132362] [2023-11-25 00:08:14,082 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[135477,135490] [2023-11-25 00:08:14,106 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[143490,143503] [2023-11-25 00:08:14,125 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[149294,149307] [2023-11-25 00:08:14,211 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[172040,172053] [2023-11-25 00:08:14,306 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199876,199889] [2023-11-25 00:08:14,376 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226429,226442] [2023-11-25 00:08:14,449 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[253730,253743] [2023-11-25 00:08:14,534 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[284837,284850] [2023-11-25 00:08:14,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:08:14,898 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:08:15,081 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26861,26874] [2023-11-25 00:08:15,131 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33212,33225] [2023-11-25 00:08:15,269 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57844,57857] [2023-11-25 00:08:15,302 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65899,65912] [2023-11-25 00:08:15,325 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71726,71739] [2023-11-25 00:08:15,360 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82469,82482] [2023-11-25 00:08:15,379 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90414,90427] [2023-11-25 00:08:15,396 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97642,97655] [2023-11-25 00:08:15,473 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132349,132362] [2023-11-25 00:08:15,482 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[135477,135490] [2023-11-25 00:08:15,500 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[143490,143503] [2023-11-25 00:08:15,514 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[149294,149307] [2023-11-25 00:08:15,562 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[172040,172053] [2023-11-25 00:08:15,621 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199876,199889] [2023-11-25 00:08:15,725 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226429,226442] [2023-11-25 00:08:15,782 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[253730,253743] [2023-11-25 00:08:15,855 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_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[284837,284850] [2023-11-25 00:08:16,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:08:16,127 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:08:16,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16 WrapperNode [2023-11-25 00:08:16,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:08:16,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:08:16,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:08:16,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:08:16,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:16,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:16,638 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17995 [2023-11-25 00:08:16,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:08:16,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:08:16,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:08:16,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:08:16,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:16,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:16,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:16,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:16,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:17,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:17,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:17,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:17,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:08:17,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:08:17,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:08:17,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:08:17,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (1/1) ... [2023-11-25 00:08:17,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:08:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:08:17,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:08:17,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8833a4a4-29e4-44c8-ac54-4927a0f2e32e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:08:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:08:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:08:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:08:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:08:17,800 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:08:17,803 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:08:25,912 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:08:27,571 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:08:27,572 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:08:27,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:08:27 BoogieIcfgContainer [2023-11-25 00:08:27,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:08:27,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:08:27,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:08:27,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:08:27,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:08:12" (1/3) ... [2023-11-25 00:08:27,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3937bb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:08:27, skipping insertion in model container [2023-11-25 00:08:27,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:16" (2/3) ... [2023-11-25 00:08:27,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3937bb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:08:27, skipping insertion in model container [2023-11-25 00:08:27,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:08:27" (3/3) ... [2023-11-25 00:08:27,589 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-11-25 00:08:27,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:08:27,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-25 00:08:27,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:08:27,747 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;@4f282b41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:08:27,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-25 00:08:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-25 00:08:27,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:27,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:27,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-25 00:08:27,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash 600254357, now seen corresponding path program 1 times [2023-11-25 00:08:27,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:27,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876930009] [2023-11-25 00:08:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:27,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:28,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:28,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876930009] [2023-11-25 00:08:28,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876930009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:28,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:28,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:08:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316362774] [2023-11-25 00:08:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:28,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:08:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:08:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:08:28,674 INFO L87 Difference]: Start difference. First operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 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 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:33,541 INFO L93 Difference]: Finished difference Result 6231 states and 11121 transitions. [2023-11-25 00:08:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:08:33,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-25 00:08:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:33,585 INFO L225 Difference]: With dead ends: 6231 [2023-11-25 00:08:33,586 INFO L226 Difference]: Without dead ends: 3945 [2023-11-25 00:08:33,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:08:33,603 INFO L413 NwaCegarLoop]: 2573 mSDtfsCounter, 18510 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18510 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 3551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:33,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18510 Valid, 3615 Invalid, 3551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-25 00:08:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2023-11-25 00:08:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3921. [2023-11-25 00:08:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3904 states have (on average 1.309938524590164) internal successors, (5114), 3920 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 5114 transitions. [2023-11-25 00:08:33,785 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 5114 transitions. Word has length 63 [2023-11-25 00:08:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:33,785 INFO L495 AbstractCegarLoop]: Abstraction has 3921 states and 5114 transitions. [2023-11-25 00:08:33,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 5114 transitions. [2023-11-25 00:08:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-25 00:08:33,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:33,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:33,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:08:33,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-25 00:08:33,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1279054806, now seen corresponding path program 1 times [2023-11-25 00:08:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:33,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069745484] [2023-11-25 00:08:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:33,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:34,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069745484] [2023-11-25 00:08:34,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069745484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:34,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:34,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:08:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108975047] [2023-11-25 00:08:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:08:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:08:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:08:34,095 INFO L87 Difference]: Start difference. First operand 3921 states and 5114 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:37,112 INFO L93 Difference]: Finished difference Result 7148 states and 9301 transitions. [2023-11-25 00:08:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:08:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-25 00:08:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:37,136 INFO L225 Difference]: With dead ends: 7148 [2023-11-25 00:08:37,136 INFO L226 Difference]: Without dead ends: 4344 [2023-11-25 00:08:37,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:08:37,144 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 10207 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10207 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:37,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10207 Valid, 1756 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-25 00:08:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2023-11-25 00:08:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4324. [2023-11-25 00:08:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4307 states have (on average 1.3134432319479916) internal successors, (5657), 4323 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 5657 transitions. [2023-11-25 00:08:37,276 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 5657 transitions. Word has length 64 [2023-11-25 00:08:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:37,277 INFO L495 AbstractCegarLoop]: Abstraction has 4324 states and 5657 transitions. [2023-11-25 00:08:37,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 5657 transitions. [2023-11-25 00:08:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-25 00:08:37,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:37,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:37,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:08:37,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-25 00:08:37,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976619, now seen corresponding path program 1 times [2023-11-25 00:08:37,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:37,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333591245] [2023-11-25 00:08:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:37,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:37,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333591245] [2023-11-25 00:08:37,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333591245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:37,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:37,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:08:37,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138377409] [2023-11-25 00:08:37,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:37,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:08:37,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:08:37,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:08:37,621 INFO L87 Difference]: Start difference. First operand 4324 states and 5657 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:40,100 INFO L93 Difference]: Finished difference Result 8674 states and 11325 transitions. [2023-11-25 00:08:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:08:40,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-25 00:08:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:40,131 INFO L225 Difference]: With dead ends: 8674 [2023-11-25 00:08:40,131 INFO L226 Difference]: Without dead ends: 5883 [2023-11-25 00:08:40,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:08:40,137 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 9682 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9682 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:40,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9682 Valid, 1727 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-25 00:08:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2023-11-25 00:08:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5856. [2023-11-25 00:08:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 5839 states have (on average 1.3115259462236684) internal successors, (7658), 5855 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 7658 transitions. [2023-11-25 00:08:40,323 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 7658 transitions. Word has length 64 [2023-11-25 00:08:40,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:40,325 INFO L495 AbstractCegarLoop]: Abstraction has 5856 states and 7658 transitions. [2023-11-25 00:08:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 7658 transitions. [2023-11-25 00:08:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-25 00:08:40,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:40,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:40,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:08:40,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-25 00:08:40,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:40,339 INFO L85 PathProgramCache]: Analyzing trace with hash 767039615, now seen corresponding path program 1 times [2023-11-25 00:08:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:40,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250122937] [2023-11-25 00:08:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:40,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:40,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250122937] [2023-11-25 00:08:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250122937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:40,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:40,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:08:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780216818] [2023-11-25 00:08:40,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:40,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:08:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:08:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:08:40,736 INFO L87 Difference]: Start difference. First operand 5856 states and 7658 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:42,768 INFO L93 Difference]: Finished difference Result 11170 states and 14672 transitions. [2023-11-25 00:08:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:08:42,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-25 00:08:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:42,814 INFO L225 Difference]: With dead ends: 11170 [2023-11-25 00:08:42,814 INFO L226 Difference]: Without dead ends: 7350 [2023-11-25 00:08:42,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:08:42,822 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 8123 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8123 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:42,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8123 Valid, 1483 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-25 00:08:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2023-11-25 00:08:43,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7315. [2023-11-25 00:08:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 7298 states have (on average 1.3187174568374898) internal successors, (9624), 7314 states have internal predecessors, (9624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 9624 transitions. [2023-11-25 00:08:43,098 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 9624 transitions. Word has length 65 [2023-11-25 00:08:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:43,099 INFO L495 AbstractCegarLoop]: Abstraction has 7315 states and 9624 transitions. [2023-11-25 00:08:43,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 9624 transitions. [2023-11-25 00:08:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-25 00:08:43,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:43,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:43,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:08:43,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-25 00:08:43,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1941175905, now seen corresponding path program 1 times [2023-11-25 00:08:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397530157] [2023-11-25 00:08:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:43,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397530157] [2023-11-25 00:08:43,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397530157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:43,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:43,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:08:43,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566404572] [2023-11-25 00:08:43,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:43,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:08:43,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:43,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:08:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:08:43,724 INFO L87 Difference]: Start difference. First operand 7315 states and 9624 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:48,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:48,558 INFO L93 Difference]: Finished difference Result 12557 states and 16727 transitions. [2023-11-25 00:08:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-25 00:08:48,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-25 00:08:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:48,604 INFO L225 Difference]: With dead ends: 12557 [2023-11-25 00:08:48,604 INFO L226 Difference]: Without dead ends: 11630 [2023-11-25 00:08:48,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-11-25 00:08:48,610 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 10055 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 6442 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10055 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 6576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 6442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:48,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10055 Valid, 5092 Invalid, 6576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 6442 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-25 00:08:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2023-11-25 00:08:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 7274. [2023-11-25 00:08:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7257 states have (on average 1.318451150613201) internal successors, (9568), 7273 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:48,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 9568 transitions. [2023-11-25 00:08:48,935 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 9568 transitions. Word has length 65 [2023-11-25 00:08:48,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:48,936 INFO L495 AbstractCegarLoop]: Abstraction has 7274 states and 9568 transitions. [2023-11-25 00:08:48,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:48,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 9568 transitions. [2023-11-25 00:08:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-25 00:08:48,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:48,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:48,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:08:48,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-25 00:08:48,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:48,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1194049603, now seen corresponding path program 1 times [2023-11-25 00:08:48,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:48,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895800871] [2023-11-25 00:08:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:48,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:49,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:49,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895800871] [2023-11-25 00:08:49,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895800871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:49,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:49,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:08:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623226712] [2023-11-25 00:08:49,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:49,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:08:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:08:49,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:08:49,403 INFO L87 Difference]: Start difference. First operand 7274 states and 9568 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:52,517 INFO L93 Difference]: Finished difference Result 10835 states and 14522 transitions. [2023-11-25 00:08:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:08:52,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-25 00:08:52,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:52,536 INFO L225 Difference]: With dead ends: 10835 [2023-11-25 00:08:52,537 INFO L226 Difference]: Without dead ends: 9818 [2023-11-25 00:08:52,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:08:52,542 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 8773 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8773 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:52,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8773 Valid, 3845 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-25 00:08:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2023-11-25 00:08:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 7147. [2023-11-25 00:08:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7130 states have (on average 1.3183730715287518) internal successors, (9400), 7146 states have internal predecessors, (9400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9400 transitions. [2023-11-25 00:08:52,724 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9400 transitions. Word has length 65 [2023-11-25 00:08:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:52,724 INFO L495 AbstractCegarLoop]: Abstraction has 7147 states and 9400 transitions. [2023-11-25 00:08:52,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:52,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9400 transitions. [2023-11-25 00:08:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-25 00:08:52,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:52,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:52,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-25 00:08:52,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2023-11-25 00:08:52,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash -780640952, now seen corresponding path program 1 times [2023-11-25 00:08:52,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:52,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429040645] [2023-11-25 00:08:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:53,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:53,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429040645] [2023-11-25 00:08:53,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429040645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:53,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:53,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:08:53,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731015897] [2023-11-25 00:08:53,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:53,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:08:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:53,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:08:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:08:53,098 INFO L87 Difference]: Start difference. First operand 7147 states and 9400 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)