./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 be1fcaa299b4a26d5c3c0d4f857b13329cbb7ec0505911e54bd9d27d2647b4d4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:00:18,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:00:18,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:00:18,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:00:18,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:00:18,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:00:18,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:00:18,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:00:18,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:00:18,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:00:18,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:00:18,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:00:18,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:00:18,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:00:18,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:00:18,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:00:18,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:00:18,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:00:18,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:00:18,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:00:18,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:00:18,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:00:18,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:00:18,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:00:18,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:00:18,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:00:18,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:00:18,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:00:18,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:00:18,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:00:18,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:00:18,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:00:18,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:00:18,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:00:18,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:00:18,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:00:18,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:00:18,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:00:18,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:00:18,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:00:18,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:00:18,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:00:18,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:00:18,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:00:18,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:00:18,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:00:18,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:00:18,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:00:18,749 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:00:18,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:00:18,750 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:00:18,750 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:00:18,750 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:00:18,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:00:18,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:00:18,751 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:00:18,751 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:00:18,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:00:18,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:00:18,751 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:00:18,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:00:18,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:00:18,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:00:18,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:00:18,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:00:18,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:00:18,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:00:18,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:00:18,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:00:18,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:00:18,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:00:18,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:00:18,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:00:18,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:00:18,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:00:18,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:00:18,754 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:00:18,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:00:18,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:00:18,755 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:00:18,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:00:18,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:00:18,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:00:18,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be1fcaa299b4a26d5c3c0d4f857b13329cbb7ec0505911e54bd9d27d2647b4d4 [2022-12-14 10:00:18,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:00:18,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:00:18,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:00:18,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:00:18,960 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:00:18,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 10:00:21,476 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:00:21,746 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:00:21,747 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 10:00:21,761 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/data/e0414cac1/a2649d7053fa4e86ae942aaf44d203ec/FLAG9e77f260a [2022-12-14 10:00:22,053 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/data/e0414cac1/a2649d7053fa4e86ae942aaf44d203ec [2022-12-14 10:00:22,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:00:22,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:00:22,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:00:22,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:00:22,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:00:22,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a6a061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22, skipping insertion in model container [2022-12-14 10:00:22,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:00:22,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:00:22,322 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7172,7185] [2022-12-14 10:00:22,340 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10914,10927] [2022-12-14 10:00:22,367 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17944,17957] [2022-12-14 10:00:22,389 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24017,24030] [2022-12-14 10:00:22,443 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42645,42658] [2022-12-14 10:00:22,512 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[64626,64639] [2022-12-14 10:00:22,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:00:22,634 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:00:22,658 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7172,7185] [2022-12-14 10:00:22,668 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10914,10927] [2022-12-14 10:00:22,682 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17944,17957] [2022-12-14 10:00:22,692 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24017,24030] [2022-12-14 10:00:22,719 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42645,42658] [2022-12-14 10:00:22,750 WARN L237 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_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[64626,64639] [2022-12-14 10:00:22,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:00:22,834 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:00:22,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22 WrapperNode [2022-12-14 10:00:22,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:00:22,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:00:22,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:00:22,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:00:22,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,940 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5288 [2022-12-14 10:00:22,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:00:22,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:00:22,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:00:22,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:00:22,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:22,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:23,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:23,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:23,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:23,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:00:23,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:00:23,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:00:23,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:00:23,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (1/1) ... [2022-12-14 10:00:23,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:00:23,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:00:23,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:00:23,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:00:23,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:00:23,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:00:23,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:00:23,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:00:23,281 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:00:23,283 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:00:25,018 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:00:25,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:00:25,230 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:00:25,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:00:25 BoogieIcfgContainer [2022-12-14 10:00:25,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:00:25,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:00:25,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:00:25,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:00:25,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:00:22" (1/3) ... [2022-12-14 10:00:25,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2754e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:00:25, skipping insertion in model container [2022-12-14 10:00:25,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:22" (2/3) ... [2022-12-14 10:00:25,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2754e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:00:25, skipping insertion in model container [2022-12-14 10:00:25,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:00:25" (3/3) ... [2022-12-14 10:00:25,239 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 10:00:25,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:00:25,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 10:00:25,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:00:25,307 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=LoopsAndPotentialCycles, 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;@2b74d24c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:00:25,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 10:00:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 1046 states have (on average 1.8355640535372848) internal successors, (1920), 1052 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 10:00:25,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:25,328 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] [2022-12-14 10:00:25,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:25,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2020000843, now seen corresponding path program 1 times [2022-12-14 10:00:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385608502] [2022-12-14 10:00:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:25,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:25,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:25,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385608502] [2022-12-14 10:00:25,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385608502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:25,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:25,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:00:25,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782574551] [2022-12-14 10:00:25,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:00:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:00:25,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:00:25,710 INFO L87 Difference]: Start difference. First operand has 1053 states, 1046 states have (on average 1.8355640535372848) internal successors, (1920), 1052 states have internal predecessors, (1920), 0 states have call successors, (0), 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 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:26,786 INFO L93 Difference]: Finished difference Result 1879 states and 3332 transitions. [2022-12-14 10:00:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:00:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-14 10:00:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:26,807 INFO L225 Difference]: With dead ends: 1879 [2022-12-14 10:00:26,807 INFO L226 Difference]: Without dead ends: 1220 [2022-12-14 10:00:26,812 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 [2022-12-14 10:00:26,815 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 5914 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5914 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:26,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5914 Valid, 1246 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:00:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-12-14 10:00:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1208. [2022-12-14 10:00:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1202 states have (on average 1.2961730449251248) internal successors, (1558), 1207 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1558 transitions. [2022-12-14 10:00:26,907 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1558 transitions. Word has length 50 [2022-12-14 10:00:26,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:26,907 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1558 transitions. [2022-12-14 10:00:26,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:26,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1558 transitions. [2022-12-14 10:00:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 10:00:26,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:26,910 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] [2022-12-14 10:00:26,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:00:26,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:26,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:26,910 INFO L85 PathProgramCache]: Analyzing trace with hash -371948326, now seen corresponding path program 1 times [2022-12-14 10:00:26,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:26,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168299505] [2022-12-14 10:00:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:27,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:27,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168299505] [2022-12-14 10:00:27,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168299505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:27,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:27,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:00:27,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137473469] [2022-12-14 10:00:27,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:27,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:00:27,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:00:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:00:27,033 INFO L87 Difference]: Start difference. First operand 1208 states and 1558 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:27,686 INFO L93 Difference]: Finished difference Result 2197 states and 2879 transitions. [2022-12-14 10:00:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:00:27,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-14 10:00:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:27,692 INFO L225 Difference]: With dead ends: 2197 [2022-12-14 10:00:27,692 INFO L226 Difference]: Without dead ends: 1474 [2022-12-14 10:00:27,693 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 [2022-12-14 10:00:27,695 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 3694 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3694 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:27,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3694 Valid, 675 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:00:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-12-14 10:00:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1464. [2022-12-14 10:00:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1458 states have (on average 1.3072702331961592) internal successors, (1906), 1463 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1906 transitions. [2022-12-14 10:00:27,778 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1906 transitions. Word has length 50 [2022-12-14 10:00:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:27,778 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1906 transitions. [2022-12-14 10:00:27,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1906 transitions. [2022-12-14 10:00:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 10:00:27,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:27,780 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] [2022-12-14 10:00:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:00:27,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:27,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1656171021, now seen corresponding path program 1 times [2022-12-14 10:00:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:27,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067638644] [2022-12-14 10:00:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:27,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:27,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067638644] [2022-12-14 10:00:27,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067638644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:27,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:27,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:00:27,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16085035] [2022-12-14 10:00:27,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:27,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:00:27,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:00:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:00:27,866 INFO L87 Difference]: Start difference. First operand 1464 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:28,488 INFO L93 Difference]: Finished difference Result 2827 states and 3713 transitions. [2022-12-14 10:00:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:00:28,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-14 10:00:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:28,496 INFO L225 Difference]: With dead ends: 2827 [2022-12-14 10:00:28,496 INFO L226 Difference]: Without dead ends: 2099 [2022-12-14 10:00:28,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:00:28,499 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 3332 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 646 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:00:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2022-12-14 10:00:28,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2093. [2022-12-14 10:00:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 2087 states have (on average 1.2980354575946333) internal successors, (2709), 2092 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2709 transitions. [2022-12-14 10:00:28,612 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2709 transitions. Word has length 50 [2022-12-14 10:00:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:28,613 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 2709 transitions. [2022-12-14 10:00:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2709 transitions. [2022-12-14 10:00:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:00:28,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:28,615 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] [2022-12-14 10:00:28,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:00:28,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1156025879, now seen corresponding path program 1 times [2022-12-14 10:00:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:28,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046869718] [2022-12-14 10:00:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:28,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:28,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046869718] [2022-12-14 10:00:28,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046869718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:28,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:28,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:00:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784259672] [2022-12-14 10:00:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:00:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:00:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:00:28,873 INFO L87 Difference]: Start difference. First operand 2093 states and 2709 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:30,348 INFO L93 Difference]: Finished difference Result 3391 states and 4452 transitions. [2022-12-14 10:00:30,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:00:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 10:00:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:30,355 INFO L225 Difference]: With dead ends: 3391 [2022-12-14 10:00:30,355 INFO L226 Difference]: Without dead ends: 3386 [2022-12-14 10:00:30,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:00:30,356 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1996 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:30,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1996 Valid, 2457 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2821 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 10:00:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-12-14 10:00:30,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2093. [2022-12-14 10:00:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 2087 states have (on average 1.2975563009103976) internal successors, (2708), 2092 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2708 transitions. [2022-12-14 10:00:30,448 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2708 transitions. Word has length 51 [2022-12-14 10:00:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:30,448 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 2708 transitions. [2022-12-14 10:00:30,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2708 transitions. [2022-12-14 10:00:30,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:00:30,450 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:30,450 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] [2022-12-14 10:00:30,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:00:30,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 544097692, now seen corresponding path program 1 times [2022-12-14 10:00:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:30,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658892107] [2022-12-14 10:00:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:30,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:30,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658892107] [2022-12-14 10:00:30,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658892107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:30,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:30,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:00:30,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367564917] [2022-12-14 10:00:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:30,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:00:30,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:30,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:00:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:00:30,651 INFO L87 Difference]: Start difference. First operand 2093 states and 2708 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:32,129 INFO L93 Difference]: Finished difference Result 3833 states and 5088 transitions. [2022-12-14 10:00:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:00:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 10:00:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:32,135 INFO L225 Difference]: With dead ends: 3833 [2022-12-14 10:00:32,135 INFO L226 Difference]: Without dead ends: 3510 [2022-12-14 10:00:32,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:00:32,137 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2859 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:32,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2859 Valid, 2737 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 10:00:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2022-12-14 10:00:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 2093. [2022-12-14 10:00:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 2087 states have (on average 1.297077144226162) internal successors, (2707), 2092 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2707 transitions. [2022-12-14 10:00:32,248 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2707 transitions. Word has length 51 [2022-12-14 10:00:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:32,248 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 2707 transitions. [2022-12-14 10:00:32,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2707 transitions. [2022-12-14 10:00:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:00:32,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:32,250 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] [2022-12-14 10:00:32,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:00:32,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:32,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1134807775, now seen corresponding path program 1 times [2022-12-14 10:00:32,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:32,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313318676] [2022-12-14 10:00:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:32,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:32,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313318676] [2022-12-14 10:00:32,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313318676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:32,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:32,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:00:32,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694075868] [2022-12-14 10:00:32,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:32,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:00:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:32,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:00:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:00:32,418 INFO L87 Difference]: Start difference. First operand 2093 states and 2707 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:33,382 INFO L93 Difference]: Finished difference Result 3455 states and 4567 transitions. [2022-12-14 10:00:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:00:33,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 10:00:33,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:33,387 INFO L225 Difference]: With dead ends: 3455 [2022-12-14 10:00:33,387 INFO L226 Difference]: Without dead ends: 3008 [2022-12-14 10:00:33,388 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 [2022-12-14 10:00:33,389 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 3486 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3486 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:33,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3486 Valid, 1426 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 10:00:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-12-14 10:00:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2093. [2022-12-14 10:00:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 2087 states have (on average 1.2965979875419262) internal successors, (2706), 2092 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2706 transitions. [2022-12-14 10:00:33,516 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2706 transitions. Word has length 51 [2022-12-14 10:00:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:33,516 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 2706 transitions. [2022-12-14 10:00:33,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2706 transitions. [2022-12-14 10:00:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 10:00:33,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:33,518 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] [2022-12-14 10:00:33,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:00:33,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:33,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:33,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1876349593, now seen corresponding path program 1 times [2022-12-14 10:00:33,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:33,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639162321] [2022-12-14 10:00:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:33,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:33,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:33,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639162321] [2022-12-14 10:00:33,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639162321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:33,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:33,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:00:33,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877148722] [2022-12-14 10:00:33,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:33,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:33,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:33,557 INFO L87 Difference]: Start difference. First operand 2093 states and 2706 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:33,835 INFO L93 Difference]: Finished difference Result 2855 states and 3765 transitions. [2022-12-14 10:00:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:33,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 10:00:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:33,838 INFO L225 Difference]: With dead ends: 2855 [2022-12-14 10:00:33,838 INFO L226 Difference]: Without dead ends: 1802 [2022-12-14 10:00:33,840 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 [2022-12-14 10:00:33,840 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 522 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:33,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1122 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-12-14 10:00:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1800. [2022-12-14 10:00:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1794 states have (on average 1.2709030100334449) internal successors, (2280), 1799 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2280 transitions. [2022-12-14 10:00:33,991 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2280 transitions. Word has length 52 [2022-12-14 10:00:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:33,991 INFO L495 AbstractCegarLoop]: Abstraction has 1800 states and 2280 transitions. [2022-12-14 10:00:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2280 transitions. [2022-12-14 10:00:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 10:00:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:33,993 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] [2022-12-14 10:00:33,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:00:33,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash -128279793, now seen corresponding path program 1 times [2022-12-14 10:00:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:33,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366500670] [2022-12-14 10:00:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:34,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366500670] [2022-12-14 10:00:34,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366500670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:34,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:34,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:00:34,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341236438] [2022-12-14 10:00:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:34,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:34,029 INFO L87 Difference]: Start difference. First operand 1800 states and 2280 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:34,325 INFO L93 Difference]: Finished difference Result 2757 states and 3658 transitions. [2022-12-14 10:00:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:34,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 10:00:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:34,330 INFO L225 Difference]: With dead ends: 2757 [2022-12-14 10:00:34,330 INFO L226 Difference]: Without dead ends: 2057 [2022-12-14 10:00:34,331 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 [2022-12-14 10:00:34,331 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 377 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:34,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1207 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-12-14 10:00:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2055. [2022-12-14 10:00:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2049 states have (on average 1.3025866276232307) internal successors, (2669), 2054 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2669 transitions. [2022-12-14 10:00:34,522 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2669 transitions. Word has length 52 [2022-12-14 10:00:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:34,522 INFO L495 AbstractCegarLoop]: Abstraction has 2055 states and 2669 transitions. [2022-12-14 10:00:34,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2669 transitions. [2022-12-14 10:00:34,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 10:00:34,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:34,523 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] [2022-12-14 10:00:34,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:00:34,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash -678266137, now seen corresponding path program 1 times [2022-12-14 10:00:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:34,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478834945] [2022-12-14 10:00:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:34,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:34,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478834945] [2022-12-14 10:00:34,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478834945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:34,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:34,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:00:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771587611] [2022-12-14 10:00:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:34,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:34,557 INFO L87 Difference]: Start difference. First operand 2055 states and 2669 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:34,921 INFO L93 Difference]: Finished difference Result 3729 states and 5048 transitions. [2022-12-14 10:00:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 10:00:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:34,925 INFO L225 Difference]: With dead ends: 3729 [2022-12-14 10:00:34,925 INFO L226 Difference]: Without dead ends: 2601 [2022-12-14 10:00:34,927 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 [2022-12-14 10:00:34,927 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 349 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:34,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1228 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2022-12-14 10:00:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2599. [2022-12-14 10:00:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2593 states have (on average 1.321635171615889) internal successors, (3427), 2598 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3427 transitions. [2022-12-14 10:00:35,260 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3427 transitions. Word has length 52 [2022-12-14 10:00:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:35,260 INFO L495 AbstractCegarLoop]: Abstraction has 2599 states and 3427 transitions. [2022-12-14 10:00:35,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3427 transitions. [2022-12-14 10:00:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 10:00:35,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:35,261 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] [2022-12-14 10:00:35,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:00:35,261 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash 396589116, now seen corresponding path program 1 times [2022-12-14 10:00:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:35,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663067138] [2022-12-14 10:00:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:35,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:35,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:35,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663067138] [2022-12-14 10:00:35,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663067138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:35,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:35,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:00:35,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136862314] [2022-12-14 10:00:35,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:35,292 INFO L87 Difference]: Start difference. First operand 2599 states and 3427 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:35,760 INFO L93 Difference]: Finished difference Result 4611 states and 6191 transitions. [2022-12-14 10:00:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 10:00:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:35,773 INFO L225 Difference]: With dead ends: 4611 [2022-12-14 10:00:35,773 INFO L226 Difference]: Without dead ends: 2525 [2022-12-14 10:00:35,775 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 [2022-12-14 10:00:35,775 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 557 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:35,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 801 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2022-12-14 10:00:36,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2213. [2022-12-14 10:00:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 2208 states have (on average 1.3269927536231885) internal successors, (2930), 2212 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2930 transitions. [2022-12-14 10:00:36,054 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2930 transitions. Word has length 53 [2022-12-14 10:00:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:36,054 INFO L495 AbstractCegarLoop]: Abstraction has 2213 states and 2930 transitions. [2022-12-14 10:00:36,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2930 transitions. [2022-12-14 10:00:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 10:00:36,056 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:36,056 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] [2022-12-14 10:00:36,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:00:36,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1097574629, now seen corresponding path program 1 times [2022-12-14 10:00:36,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:36,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496267608] [2022-12-14 10:00:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:36,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:36,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496267608] [2022-12-14 10:00:36,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496267608] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:36,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:36,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:00:36,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251303564] [2022-12-14 10:00:36,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:36,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:36,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:36,087 INFO L87 Difference]: Start difference. First operand 2213 states and 2930 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:36,583 INFO L93 Difference]: Finished difference Result 4102 states and 5512 transitions. [2022-12-14 10:00:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 10:00:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:36,587 INFO L225 Difference]: With dead ends: 4102 [2022-12-14 10:00:36,588 INFO L226 Difference]: Without dead ends: 2233 [2022-12-14 10:00:36,589 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 [2022-12-14 10:00:36,589 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 445 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:36,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 595 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2022-12-14 10:00:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 1971. [2022-12-14 10:00:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1967 states have (on average 1.335027961362481) internal successors, (2626), 1970 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2626 transitions. [2022-12-14 10:00:36,861 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2626 transitions. Word has length 53 [2022-12-14 10:00:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:36,862 INFO L495 AbstractCegarLoop]: Abstraction has 1971 states and 2626 transitions. [2022-12-14 10:00:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2626 transitions. [2022-12-14 10:00:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 10:00:36,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:36,863 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] [2022-12-14 10:00:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:00:36,863 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:36,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1858325642, now seen corresponding path program 1 times [2022-12-14 10:00:36,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:36,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603648079] [2022-12-14 10:00:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:37,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:37,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603648079] [2022-12-14 10:00:37,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603648079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:37,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:37,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 10:00:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069226212] [2022-12-14 10:00:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:00:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:00:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:00:37,350 INFO L87 Difference]: Start difference. First operand 1971 states and 2626 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:39,223 INFO L93 Difference]: Finished difference Result 3713 states and 4935 transitions. [2022-12-14 10:00:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:00:39,224 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 10:00:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:39,229 INFO L225 Difference]: With dead ends: 3713 [2022-12-14 10:00:39,229 INFO L226 Difference]: Without dead ends: 3491 [2022-12-14 10:00:39,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 10:00:39,230 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2404 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:39,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 4412 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 10:00:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2022-12-14 10:00:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 1959. [2022-12-14 10:00:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1956 states have (on average 1.3353783231083844) internal successors, (2612), 1958 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2612 transitions. [2022-12-14 10:00:39,596 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2612 transitions. Word has length 54 [2022-12-14 10:00:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:39,596 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2612 transitions. [2022-12-14 10:00:39,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2612 transitions. [2022-12-14 10:00:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 10:00:39,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:39,597 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] [2022-12-14 10:00:39,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:00:39,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:39,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1760291884, now seen corresponding path program 1 times [2022-12-14 10:00:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:39,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558093609] [2022-12-14 10:00:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:39,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:39,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:39,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558093609] [2022-12-14 10:00:39,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558093609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:39,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:39,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 10:00:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025587679] [2022-12-14 10:00:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:39,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 10:00:39,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 10:00:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:00:39,884 INFO L87 Difference]: Start difference. First operand 1959 states and 2612 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:42,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:42,009 INFO L93 Difference]: Finished difference Result 4069 states and 5389 transitions. [2022-12-14 10:00:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 10:00:42,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 10:00:42,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:42,015 INFO L225 Difference]: With dead ends: 4069 [2022-12-14 10:00:42,015 INFO L226 Difference]: Without dead ends: 3831 [2022-12-14 10:00:42,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-12-14 10:00:42,016 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 3246 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:42,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3246 Valid, 2654 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:00:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2022-12-14 10:00:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 1931. [2022-12-14 10:00:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1929 states have (on average 1.3364437532400206) internal successors, (2578), 1930 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2578 transitions. [2022-12-14 10:00:42,460 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2578 transitions. Word has length 54 [2022-12-14 10:00:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:42,461 INFO L495 AbstractCegarLoop]: Abstraction has 1931 states and 2578 transitions. [2022-12-14 10:00:42,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2578 transitions. [2022-12-14 10:00:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 10:00:42,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:42,461 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] [2022-12-14 10:00:42,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:00:42,462 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash 915713314, now seen corresponding path program 1 times [2022-12-14 10:00:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:42,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653213123] [2022-12-14 10:00:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:42,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:42,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:42,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653213123] [2022-12-14 10:00:42,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653213123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:42,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:42,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 10:00:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503892795] [2022-12-14 10:00:42,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:42,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:00:42,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:00:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:00:42,787 INFO L87 Difference]: Start difference. First operand 1931 states and 2578 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:45,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:45,253 INFO L93 Difference]: Finished difference Result 4292 states and 5685 transitions. [2022-12-14 10:00:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 10:00:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 10:00:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:45,259 INFO L225 Difference]: With dead ends: 4292 [2022-12-14 10:00:45,259 INFO L226 Difference]: Without dead ends: 4061 [2022-12-14 10:00:45,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2022-12-14 10:00:45,260 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 2262 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 3867 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:45,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 3867 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 10:00:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2022-12-14 10:00:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 1910. [2022-12-14 10:00:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 1.3368255631220534) internal successors, (2552), 1909 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2552 transitions. [2022-12-14 10:00:45,730 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2552 transitions. Word has length 54 [2022-12-14 10:00:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:45,730 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 2552 transitions. [2022-12-14 10:00:45,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2552 transitions. [2022-12-14 10:00:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 10:00:45,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:45,730 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] [2022-12-14 10:00:45,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:00:45,731 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:45,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:45,731 INFO L85 PathProgramCache]: Analyzing trace with hash 711019173, now seen corresponding path program 1 times [2022-12-14 10:00:45,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:45,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518630507] [2022-12-14 10:00:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:45,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:45,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518630507] [2022-12-14 10:00:45,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518630507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:45,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:45,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:00:45,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487940828] [2022-12-14 10:00:45,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:45,785 INFO L87 Difference]: Start difference. First operand 1910 states and 2552 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:46,612 INFO L93 Difference]: Finished difference Result 4345 states and 5958 transitions. [2022-12-14 10:00:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:46,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-12-14 10:00:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:46,616 INFO L225 Difference]: With dead ends: 4345 [2022-12-14 10:00:46,616 INFO L226 Difference]: Without dead ends: 2871 [2022-12-14 10:00:46,617 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 [2022-12-14 10:00:46,618 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 189 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:46,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 645 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2022-12-14 10:00:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2563. [2022-12-14 10:00:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 1.336455893832943) internal successors, (3424), 2562 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3424 transitions. [2022-12-14 10:00:47,302 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3424 transitions. Word has length 55 [2022-12-14 10:00:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:47,302 INFO L495 AbstractCegarLoop]: Abstraction has 2563 states and 3424 transitions. [2022-12-14 10:00:47,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3424 transitions. [2022-12-14 10:00:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 10:00:47,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:47,303 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] [2022-12-14 10:00:47,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:00:47,303 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash 56664476, now seen corresponding path program 1 times [2022-12-14 10:00:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:47,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76727709] [2022-12-14 10:00:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:47,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:47,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76727709] [2022-12-14 10:00:47,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76727709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:47,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:47,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:00:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458228458] [2022-12-14 10:00:47,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:47,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:00:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:00:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:00:47,361 INFO L87 Difference]: Start difference. First operand 2563 states and 3424 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:48,254 INFO L93 Difference]: Finished difference Result 4381 states and 5925 transitions. [2022-12-14 10:00:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:00:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-12-14 10:00:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:48,257 INFO L225 Difference]: With dead ends: 4381 [2022-12-14 10:00:48,257 INFO L226 Difference]: Without dead ends: 2315 [2022-12-14 10:00:48,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:00:48,259 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 426 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:48,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 657 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2022-12-14 10:00:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2311. [2022-12-14 10:00:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 2310 states have (on average 1.325974025974026) internal successors, (3063), 2310 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3063 transitions. [2022-12-14 10:00:48,929 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3063 transitions. Word has length 57 [2022-12-14 10:00:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:48,930 INFO L495 AbstractCegarLoop]: Abstraction has 2311 states and 3063 transitions. [2022-12-14 10:00:48,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3063 transitions. [2022-12-14 10:00:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 10:00:48,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:48,930 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] [2022-12-14 10:00:48,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 10:00:48,931 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1969903368, now seen corresponding path program 1 times [2022-12-14 10:00:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:48,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894930329] [2022-12-14 10:00:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:48,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:48,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:48,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894930329] [2022-12-14 10:00:48,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894930329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:48,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:48,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:00:48,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788204950] [2022-12-14 10:00:48,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:48,983 INFO L87 Difference]: Start difference. First operand 2311 states and 3063 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:50,081 INFO L93 Difference]: Finished difference Result 4987 states and 6763 transitions. [2022-12-14 10:00:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:50,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-12-14 10:00:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:50,085 INFO L225 Difference]: With dead ends: 4987 [2022-12-14 10:00:50,085 INFO L226 Difference]: Without dead ends: 3275 [2022-12-14 10:00:50,087 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 [2022-12-14 10:00:50,087 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 207 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:50,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 582 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:00:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2022-12-14 10:00:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2979. [2022-12-14 10:00:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2978 states have (on average 1.3237071860308933) internal successors, (3942), 2978 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3942 transitions. [2022-12-14 10:00:50,982 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3942 transitions. Word has length 59 [2022-12-14 10:00:50,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:50,982 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 3942 transitions. [2022-12-14 10:00:50,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:50,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3942 transitions. [2022-12-14 10:00:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 10:00:50,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:50,983 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] [2022-12-14 10:00:50,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:00:50,983 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash -583869939, now seen corresponding path program 1 times [2022-12-14 10:00:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:50,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77551129] [2022-12-14 10:00:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:50,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:51,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:51,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77551129] [2022-12-14 10:00:51,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77551129] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:51,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:51,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:00:51,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275393707] [2022-12-14 10:00:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:51,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:00:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:00:51,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:00:51,155 INFO L87 Difference]: Start difference. First operand 2979 states and 3942 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:53,923 INFO L93 Difference]: Finished difference Result 6236 states and 8218 transitions. [2022-12-14 10:00:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 10:00:53,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-12-14 10:00:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:53,932 INFO L225 Difference]: With dead ends: 6236 [2022-12-14 10:00:53,932 INFO L226 Difference]: Without dead ends: 6234 [2022-12-14 10:00:53,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:00:53,934 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1655 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:53,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2060 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:00:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2022-12-14 10:00:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 3480. [2022-12-14 10:00:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3480 states, 3479 states have (on average 1.3179074446680081) internal successors, (4585), 3479 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 4585 transitions. [2022-12-14 10:00:55,222 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 4585 transitions. Word has length 60 [2022-12-14 10:00:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:55,222 INFO L495 AbstractCegarLoop]: Abstraction has 3480 states and 4585 transitions. [2022-12-14 10:00:55,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 4585 transitions. [2022-12-14 10:00:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 10:00:55,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:55,223 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] [2022-12-14 10:00:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 10:00:55,224 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1377387279, now seen corresponding path program 1 times [2022-12-14 10:00:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965135654] [2022-12-14 10:00:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:55,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:55,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965135654] [2022-12-14 10:00:55,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965135654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:55,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:55,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:00:55,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767987987] [2022-12-14 10:00:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:55,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:00:55,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:55,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:00:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:00:55,399 INFO L87 Difference]: Start difference. First operand 3480 states and 4585 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2022-12-14 10:00:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:58,090 INFO L93 Difference]: Finished difference Result 6094 states and 8033 transitions. [2022-12-14 10:00:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 10:00:58,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-14 10:00:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:58,097 INFO L225 Difference]: With dead ends: 6094 [2022-12-14 10:00:58,097 INFO L226 Difference]: Without dead ends: 6092 [2022-12-14 10:00:58,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-14 10:00:58,098 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1203 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:58,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 2152 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:00:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6092 states. [2022-12-14 10:00:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6092 to 3751. [2022-12-14 10:00:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.3141333333333334) internal successors, (4928), 3750 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 4928 transitions. [2022-12-14 10:00:59,471 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 4928 transitions. Word has length 66 [2022-12-14 10:00:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:59,471 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 4928 transitions. [2022-12-14 10:00:59,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2022-12-14 10:00:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 4928 transitions. [2022-12-14 10:00:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 10:00:59,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:59,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:00:59,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 10:00:59,472 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:00:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:59,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2087330740, now seen corresponding path program 1 times [2022-12-14 10:00:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:59,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658090072] [2022-12-14 10:00:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:59,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:01:00,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658090072] [2022-12-14 10:01:00,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658090072] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:01:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339725383] [2022-12-14 10:01:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:00,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:01:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:01:00,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:01:00,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:01:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:00,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 10:01:00,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:01:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 10:01:00,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:01:00,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339725383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:00,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:01:00,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2022-12-14 10:01:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897366803] [2022-12-14 10:01:00,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:00,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:01:00,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:01:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:01:00,577 INFO L87 Difference]: Start difference. First operand 3751 states and 4928 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 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) [2022-12-14 10:01:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:03,389 INFO L93 Difference]: Finished difference Result 6558 states and 8630 transitions. [2022-12-14 10:01:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:01:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 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 68 [2022-12-14 10:01:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:03,394 INFO L225 Difference]: With dead ends: 6558 [2022-12-14 10:01:03,395 INFO L226 Difference]: Without dead ends: 5036 [2022-12-14 10:01:03,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-12-14 10:01:03,397 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2417 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2417 Valid, 790 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:01:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-12-14 10:01:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 3737. [2022-12-14 10:01:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3736 states have (on average 1.3150428265524625) internal successors, (4913), 3736 states have internal predecessors, (4913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 4913 transitions. [2022-12-14 10:01:04,842 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 4913 transitions. Word has length 68 [2022-12-14 10:01:04,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:04,842 INFO L495 AbstractCegarLoop]: Abstraction has 3737 states and 4913 transitions. [2022-12-14 10:01:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 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) [2022-12-14 10:01:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 4913 transitions. [2022-12-14 10:01:04,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 10:01:04,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:04,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:01:04,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:01:05,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:01:05,045 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:01:05,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1366895842, now seen corresponding path program 1 times [2022-12-14 10:01:05,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:05,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950202575] [2022-12-14 10:01:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:05,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:01:05,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:05,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950202575] [2022-12-14 10:01:05,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950202575] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:01:05,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761534824] [2022-12-14 10:01:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:05,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:01:05,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:01:05,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:01:05,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:01:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:05,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 10:01:05,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:01:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 10:01:05,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:01:05,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761534824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:05,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:01:05,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2022-12-14 10:01:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506331191] [2022-12-14 10:01:05,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:05,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:01:05,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:01:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:01:05,911 INFO L87 Difference]: Start difference. First operand 3737 states and 4913 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) [2022-12-14 10:01:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:08,136 INFO L93 Difference]: Finished difference Result 6125 states and 8077 transitions. [2022-12-14 10:01:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:01:08,136 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 68 [2022-12-14 10:01:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:08,140 INFO L225 Difference]: With dead ends: 6125 [2022-12-14 10:01:08,140 INFO L226 Difference]: Without dead ends: 4600 [2022-12-14 10:01:08,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:01:08,142 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1073 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 640 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:01:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2022-12-14 10:01:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 3545. [2022-12-14 10:01:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 3544 states have (on average 1.3123589164785554) internal successors, (4651), 3544 states have internal predecessors, (4651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4651 transitions. [2022-12-14 10:01:09,550 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4651 transitions. Word has length 68 [2022-12-14 10:01:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:09,551 INFO L495 AbstractCegarLoop]: Abstraction has 3545 states and 4651 transitions. [2022-12-14 10:01:09,551 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) [2022-12-14 10:01:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4651 transitions. [2022-12-14 10:01:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:01:09,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:09,552 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] [2022-12-14 10:01:09,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:01:09,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:01:09,753 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:01:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:09,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1723361321, now seen corresponding path program 1 times [2022-12-14 10:01:09,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:09,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236965815] [2022-12-14 10:01:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:01:09,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:09,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236965815] [2022-12-14 10:01:09,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236965815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:09,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:09,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:01:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460930362] [2022-12-14 10:01:09,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:09,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:01:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:01:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:01:09,925 INFO L87 Difference]: Start difference. First operand 3545 states and 4651 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:12,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:12,612 INFO L93 Difference]: Finished difference Result 5632 states and 7442 transitions. [2022-12-14 10:01:12,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 10:01:12,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-14 10:01:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:12,618 INFO L225 Difference]: With dead ends: 5632 [2022-12-14 10:01:12,618 INFO L226 Difference]: Without dead ends: 5630 [2022-12-14 10:01:12,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:01:12,619 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1256 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:12,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2275 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:01:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2022-12-14 10:01:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 3513. [2022-12-14 10:01:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 1.3129271070615034) internal successors, (4611), 3512 states have internal predecessors, (4611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4611 transitions. [2022-12-14 10:01:14,052 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4611 transitions. Word has length 69 [2022-12-14 10:01:14,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:14,052 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4611 transitions. [2022-12-14 10:01:14,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:14,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4611 transitions. [2022-12-14 10:01:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:01:14,053 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:14,053 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] [2022-12-14 10:01:14,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 10:01:14,054 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:01:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:14,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1684248653, now seen corresponding path program 1 times [2022-12-14 10:01:14,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:14,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379398963] [2022-12-14 10:01:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:14,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:01:14,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:14,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379398963] [2022-12-14 10:01:14,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379398963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:14,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:14,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:01:14,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158177546] [2022-12-14 10:01:14,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:14,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:01:14,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:01:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:01:14,199 INFO L87 Difference]: Start difference. First operand 3513 states and 4611 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:17,237 INFO L93 Difference]: Finished difference Result 6022 states and 7925 transitions. [2022-12-14 10:01:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 10:01:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-14 10:01:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:17,244 INFO L225 Difference]: With dead ends: 6022 [2022-12-14 10:01:17,244 INFO L226 Difference]: Without dead ends: 6020 [2022-12-14 10:01:17,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-14 10:01:17,245 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1187 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:17,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 2276 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:01:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2022-12-14 10:01:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 3803. [2022-12-14 10:01:18,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 1.3103629668595476) internal successors, (4982), 3802 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 4982 transitions. [2022-12-14 10:01:18,895 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 4982 transitions. Word has length 69 [2022-12-14 10:01:18,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:18,895 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 4982 transitions. [2022-12-14 10:01:18,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 4982 transitions. [2022-12-14 10:01:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:01:18,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:18,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:01:18,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 10:01:18,896 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:01:18,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:18,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1065306284, now seen corresponding path program 1 times [2022-12-14 10:01:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:18,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488805842] [2022-12-14 10:01:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:18,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:01:19,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:19,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488805842] [2022-12-14 10:01:19,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488805842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:01:19,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144028141] [2022-12-14 10:01:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:19,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:01:19,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:01:19,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:01:19,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:01:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:19,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-14 10:01:19,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:01:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:01:22,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:01:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:01:33,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144028141] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:01:33,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [363228831] [2022-12-14 10:01:33,380 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-12-14 10:01:33,380 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:01:33,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:01:33,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:01:33,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:01:33,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:01:33,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:01:33,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:01:33,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:01:33,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:01:33,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:01:33,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:01:38,006 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:02:25,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [363228831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:02:25,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:02:25,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [16, 25, 25] total 101 [2022-12-14 10:02:25,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138101317] [2022-12-14 10:02:25,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:02:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 10:02:25,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:02:25,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 10:02:25,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1827, Invalid=8273, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 10:02:25,258 INFO L87 Difference]: Start difference. First operand 3803 states and 4982 transitions. Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 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) [2022-12-14 10:02:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:02:45,551 INFO L93 Difference]: Finished difference Result 5414 states and 7150 transitions. [2022-12-14 10:02:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 10:02:45,551 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-14 10:02:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:02:45,555 INFO L225 Difference]: With dead ends: 5414 [2022-12-14 10:02:45,555 INFO L226 Difference]: Without dead ends: 3808 [2022-12-14 10:02:45,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 113 SyntacticMatches, 11 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5702 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=1827, Invalid=8273, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 10:02:45,558 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 11 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 7549 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:02:45,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 441 Invalid, 7552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7549 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2022-12-14 10:02:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2022-12-14 10:02:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3807. [2022-12-14 10:02:47,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3806 states have (on average 1.3100367840252234) internal successors, (4986), 3806 states have internal predecessors, (4986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:02:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 4986 transitions. [2022-12-14 10:02:47,296 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 4986 transitions. Word has length 69 [2022-12-14 10:02:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:02:47,296 INFO L495 AbstractCegarLoop]: Abstraction has 3807 states and 4986 transitions. [2022-12-14 10:02:47,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 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) [2022-12-14 10:02:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 4986 transitions. [2022-12-14 10:02:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:02:47,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:02:47,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:02:47,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:02:47,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 10:02:47,498 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:02:47,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:02:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1092583132, now seen corresponding path program 1 times [2022-12-14 10:02:47,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:02:47,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432021784] [2022-12-14 10:02:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:02:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:02:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:02:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:02:48,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:02:48,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432021784] [2022-12-14 10:02:48,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432021784] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:02:48,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234480720] [2022-12-14 10:02:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:02:48,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:02:48,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:02:48,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:02:48,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:02:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:02:48,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 10:02:48,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:02:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:02:49,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:02:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:02:53,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234480720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:02:53,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211906480] [2022-12-14 10:02:53,413 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-12-14 10:02:53,413 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:02:53,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:02:53,414 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:02:53,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:02:53,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:02:53,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:02:53,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:02:53,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:02:53,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:02:53,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:02:53,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:03:17,211 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:04:30,163 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '252405#(and (= ~__return_1867~0 0) (= ~__return_2409~0 0) (= ~__return_1391~0 0) (= ~__return_1231~0 0) (<= 1 ~__return_1191~0) (= ~__return_1221~0 0) (<= ~send3~0 127) (= ~__return_1371~0 0) (<= 0 ~id3~0) (<= (+ |ULTIMATE.start_main_~node1__m1~64#1| 1) 0) (= ~__return_1281~0 0) (<= 0 (+ ~p3_new~0 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~37#1| 1) 0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~13#1| 127) (= ~__return_1401~0 0) (= ~__return_1451~0 0) (<= 1 ~__return_103~0) (<= 1 ~__return_2215~0) (= ~__return_4237~0 0) (<= ~st3~0 0) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~10#1|) (= ~__return_1331~0 0) (= ~__return_1181~0 0) (<= 0 (+ ~p1_old~0 1)) (= ~__return_1461~0 0) (= ~__return_1241~0 0) (= ~__return_1571~0 0) (<= 0 ~id1~0) (= ~__return_4374~0 0) (= ~__return_1291~0 0) (= |ULTIMATE.start_main_~check__tmp~69#1| 1) (= ~p2~0 0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (<= 1 ~r1~0) (= ~__return_1381~0 0) (= ~__return_1471~0 0) (= ~__return_1121~0 0) (= ~__return_1421~0 0) (= ~__return_1271~0 0) (= ~__return_1171~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~43#1| 1)) (= ~__return_1101~0 0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (= ~__return_3325~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~36#1| 1)) (= ~__return_3264~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~46#1| 1) 0) (= ~__return_2711~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~46#1| 1)) (= ~__return_1441~0 0) (= ~__return_1141~0 0) (<= ~mode2~0 1) (= ~__return_1491~0 0) (<= 0 ~st1~0) (<= ~__return_1191~0 1) (= |ULTIMATE.start_main_~check__tmp~67#1| 1) (<= |ULTIMATE.start_main_~assert__arg~68#1| 1) (<= ~__return_103~0 1) (<= 0 ~st2~0) (= ~__return_2299~0 0) (= ~__return_1341~0 0) (<= ~mode3~0 1) (= ~__return_1311~0 0) (= ~__return_1251~0 0) (= ~__return_3177~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~37#1| 1)) (= ~__return_1321~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~66#1|) (<= 0 ~send2~0) (= ~__return_3610~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= 0 (+ ~p2_old~0 1)) (= ~__return_1551~0 0) (<= ~id1~0 127) (= ~__return_1151~0 0) (= ~__return_1531~0 0) (= ~__return_4015~0 0) (= ~__return_4126~0 0) (= ~__return_3499~0 0) (= ~__return_1301~0 0) (<= |ULTIMATE.start_main_~assert__arg~66#1| 1) (= ~__return_1561~0 0) (= ~__return_1131~0 0) (<= ~send2~0 127) (= ~__return_2650~0 0) (= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= 0 (+ ~p2_new~0 1)) (= ~__return_1351~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_1431~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~44#1| 1)) (= ~__return_2798~0 0) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (<= |ULTIMATE.start_main_~__tmp_67~0#1| 1) (<= ~__return_5061~0 1) (<= ~st2~0 0) (= ~__return_3817~0 0) (<= (+ ~p2_new~0 1) 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~47#1| 1)) (= ~__return_1261~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~64#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~43#1| 1) 0) (= ~__return_1201~0 0) (= ~__return_2885~0 0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~10#1| 127) (= ~__return_1481~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (= ~__return_2563~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_69~0#1|) (<= ~id3~0 127) (= ~__return_1501~0 0) (<= 0 ~id2~0) (= |#NULL.offset| 0) (<= 0 (+ ~nomsg~0 1)) (= ~__return_1521~0 0) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~13#1|) (<= ~__return_2215~0 1) (= ~__return_1361~0 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (<= |ULTIMATE.start_main_~__tmp_69~0#1| 1) (<= 0 |ULTIMATE.start_main_~assert__arg~68#1|) (= ~__return_2061~0 0) (<= (+ ~p3_new~0 1) 0) (= ~__return_1211~0 0) (= ~__return_1161~0 0) (= ~__return_1951~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~47#1| 1) 0) (= ~p3~0 0) (<= (+ ~p2_old~0 1) 0) (<= 0 (+ ~p1_new~0 1)) (= ~__return_3928~0 0) (<= (+ ~p1_old~0 1) 0) (<= |ULTIMATE.start_main_~check__tmp~58#1| 1) (<= 0 ~send3~0) (= ~p1~0 0) (= ~__return_1541~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~__tmp_67~0#1|) (= ~__return_main~0 0) (= ~__return_3412~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~36#1| 1) 0) (<= (+ |ULTIMATE.start_main_~node3__m3~44#1| 1) 0) (= ~__return_2996~0 0) (= ~__return_1111~0 0) (= ~__return_1511~0 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= ~__return_1411~0 0) (= |ULTIMATE.start_main_~main__i2~0#1| 0))' at error location [2022-12-14 10:04:30,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:04:30,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:04:30,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2022-12-14 10:04:30,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768802491] [2022-12-14 10:04:30,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:04:30,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 10:04:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:04:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 10:04:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1017, Invalid=6465, Unknown=0, NotChecked=0, Total=7482 [2022-12-14 10:04:30,166 INFO L87 Difference]: Start difference. First operand 3807 states and 4986 transitions. Second operand has 41 states, 41 states have (on average 4.780487804878049) internal successors, (196), 41 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:04:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:04:56,028 INFO L93 Difference]: Finished difference Result 18364 states and 24654 transitions. [2022-12-14 10:04:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-12-14 10:04:56,030 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.780487804878049) internal successors, (196), 41 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-14 10:04:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:04:56,045 INFO L225 Difference]: With dead ends: 18364 [2022-12-14 10:04:56,045 INFO L226 Difference]: Without dead ends: 16339 [2022-12-14 10:04:56,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 125 SyntacticMatches, 13 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13550 ImplicationChecksByTransitivity, 86.7s TimeCoverageRelationStatistics Valid=3412, Invalid=28094, Unknown=0, NotChecked=0, Total=31506 [2022-12-14 10:04:56,053 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 5454 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5454 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 4160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:04:56,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5454 Valid, 3946 Invalid, 4160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 3873 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-14 10:04:56,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16339 states. [2022-12-14 10:05:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16339 to 7460. [2022-12-14 10:05:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 7459 states have (on average 1.3145193725700497) internal successors, (9805), 7459 states have internal predecessors, (9805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:05:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 9805 transitions. [2022-12-14 10:05:00,365 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 9805 transitions. Word has length 69 [2022-12-14 10:05:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:05:00,365 INFO L495 AbstractCegarLoop]: Abstraction has 7460 states and 9805 transitions. [2022-12-14 10:05:00,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.780487804878049) internal successors, (196), 41 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:05:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 9805 transitions. [2022-12-14 10:05:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 10:05:00,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:05:00,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:05:00,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:05:00,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 10:05:00,568 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:05:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:05:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1048136402, now seen corresponding path program 1 times [2022-12-14 10:05:00,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:05:00,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758563329] [2022-12-14 10:05:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:05:00,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:05:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:05:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 10:05:00,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:05:00,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758563329] [2022-12-14 10:05:00,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758563329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:05:00,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:05:00,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:05:00,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459315905] [2022-12-14 10:05:00,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:05:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:05:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:05:00,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:05:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:05:00,730 INFO L87 Difference]: Start difference. First operand 7460 states and 9805 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:05:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:05:08,327 INFO L93 Difference]: Finished difference Result 12384 states and 16164 transitions. [2022-12-14 10:05:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 10:05:08,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-14 10:05:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:05:08,336 INFO L225 Difference]: With dead ends: 12384 [2022-12-14 10:05:08,336 INFO L226 Difference]: Without dead ends: 10638 [2022-12-14 10:05:08,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-12-14 10:05:08,339 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1503 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:05:08,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1177 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 10:05:08,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10638 states. [2022-12-14 10:05:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10638 to 7441. [2022-12-14 10:05:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7441 states, 7440 states have (on average 1.3149193548387097) internal successors, (9783), 7440 states have internal predecessors, (9783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:05:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7441 states to 7441 states and 9783 transitions. [2022-12-14 10:05:12,959 INFO L78 Accepts]: Start accepts. Automaton has 7441 states and 9783 transitions. Word has length 70 [2022-12-14 10:05:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:05:12,959 INFO L495 AbstractCegarLoop]: Abstraction has 7441 states and 9783 transitions. [2022-12-14 10:05:12,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:05:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 7441 states and 9783 transitions. [2022-12-14 10:05:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 10:05:12,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:05:12,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:05:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 10:05:12,960 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:05:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:05:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash -517315488, now seen corresponding path program 1 times [2022-12-14 10:05:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:05:12,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527048036] [2022-12-14 10:05:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:05:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:05:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:05:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:05:13,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:05:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527048036] [2022-12-14 10:05:13,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527048036] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:05:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741402189] [2022-12-14 10:05:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:05:13,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:05:13,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:05:13,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:05:13,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:05:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:05:13,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-14 10:05:13,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:05:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:05:16,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:05:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:05:24,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741402189] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:05:24,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [161088406] [2022-12-14 10:05:24,032 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-12-14 10:05:24,032 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:05:24,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:05:24,033 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:05:24,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:05:24,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:05:24,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:05:24,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:05:24,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:05:24,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:05:24,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:05:24,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:05:26,942 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:06:13,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [161088406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:06:13,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:06:13,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [16, 24, 24] total 97 [2022-12-14 10:06:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777102725] [2022-12-14 10:06:13,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:06:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 10:06:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:06:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 10:06:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1677, Invalid=7635, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 10:06:13,463 INFO L87 Difference]: Start difference. First operand 7441 states and 9783 transitions. Second operand has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 38 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:06:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:06:34,500 INFO L93 Difference]: Finished difference Result 9367 states and 12368 transitions. [2022-12-14 10:06:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 10:06:34,501 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 38 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-14 10:06:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:06:34,506 INFO L225 Difference]: With dead ends: 9367 [2022-12-14 10:06:34,506 INFO L226 Difference]: Without dead ends: 7430 [2022-12-14 10:06:34,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5106 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=1677, Invalid=7635, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 10:06:34,509 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 7 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 6725 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 6728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:06:34,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 573 Invalid, 6728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6725 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2022-12-14 10:06:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7430 states. [2022-12-14 10:06:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7430 to 7430. [2022-12-14 10:06:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7430 states, 7429 states have (on average 1.3145780051150895) internal successors, (9766), 7429 states have internal predecessors, (9766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:06:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7430 states to 7430 states and 9766 transitions. [2022-12-14 10:06:38,941 INFO L78 Accepts]: Start accepts. Automaton has 7430 states and 9766 transitions. Word has length 71 [2022-12-14 10:06:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:06:38,941 INFO L495 AbstractCegarLoop]: Abstraction has 7430 states and 9766 transitions. [2022-12-14 10:06:38,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 38 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:06:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7430 states and 9766 transitions. [2022-12-14 10:06:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 10:06:38,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:06:38,942 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] [2022-12-14 10:06:38,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:06:39,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:06:39,144 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:06:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:06:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash 412284185, now seen corresponding path program 1 times [2022-12-14 10:06:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:06:39,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129606332] [2022-12-14 10:06:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:06:39,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:06:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:06:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:06:39,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:06:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129606332] [2022-12-14 10:06:39,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129606332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:06:39,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:06:39,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:06:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155331845] [2022-12-14 10:06:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:06:39,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:06:39,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:06:39,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:06:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:06:39,254 INFO L87 Difference]: Start difference. First operand 7430 states and 9766 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:06:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:06:44,912 INFO L93 Difference]: Finished difference Result 11093 states and 14763 transitions. [2022-12-14 10:06:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:06:44,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-14 10:06:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:06:44,921 INFO L225 Difference]: With dead ends: 11093 [2022-12-14 10:06:44,922 INFO L226 Difference]: Without dead ends: 9839 [2022-12-14 10:06:44,923 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 [2022-12-14 10:06:44,924 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 203 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:06:44,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 567 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:06:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9839 states. [2022-12-14 10:06:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9839 to 9300. [2022-12-14 10:06:50,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9300 states, 9299 states have (on average 1.3088504140230133) internal successors, (12171), 9299 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:06:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 12171 transitions. [2022-12-14 10:06:50,243 INFO L78 Accepts]: Start accepts. Automaton has 9300 states and 12171 transitions. Word has length 71 [2022-12-14 10:06:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:06:50,243 INFO L495 AbstractCegarLoop]: Abstraction has 9300 states and 12171 transitions. [2022-12-14 10:06:50,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:06:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 9300 states and 12171 transitions. [2022-12-14 10:06:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:06:50,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:06:50,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:06:50,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 10:06:50,245 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:06:50,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:06:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash -847364941, now seen corresponding path program 1 times [2022-12-14 10:06:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:06:50,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889000885] [2022-12-14 10:06:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:06:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:06:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:06:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:06:50,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:06:50,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889000885] [2022-12-14 10:06:50,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889000885] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:06:50,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740155016] [2022-12-14 10:06:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:06:50,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:06:50,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:06:50,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:06:50,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:06:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:06:50,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 10:06:50,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:06:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:06:53,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:07:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:07:04,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740155016] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:07:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1084371478] [2022-12-14 10:07:04,226 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-12-14 10:07:04,226 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:07:04,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:07:04,227 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:07:04,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:07:04,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:04,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:04,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:07:04,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:07:04,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:07:04,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:07:04,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:07:32,183 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:08:48,862 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '388322#(and (= ~__return_1867~0 0) (= ~__return_2409~0 0) (= ~__return_1391~0 0) (= ~__return_1231~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_22~0#1|) (= |ULTIMATE.start_main_~check__tmp~21#1| 1) (<= 0 ~id3~0) (<= 0 |ULTIMATE.start_main_~assert__arg~49#1|) (= ~__return_1281~0 0) (<= 0 (+ ~p3_new~0 1)) (= ~__return_1401~0 0) (= ~__return_1451~0 0) (<= 1 ~__return_103~0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~13#1|) (= ~__return_1331~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~11#1| 1) 0) (= ~__return_1181~0 0) (= ~__return_1461~0 0) (= ~__return_1241~0 0) (= ~__return_1571~0 0) (<= 0 ~id1~0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~45#1| 1)) (= ~__return_4374~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~19#1| 1)) (<= ~__return_3325~0 1) (= ~p2~0 0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (<= 1 ~r1~0) (= ~__return_1381~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~19#1| 1) 0) (= ~__return_1471~0 0) (= ~__return_1121~0 0) (= ~__return_1421~0 0) (= ~__return_1271~0 0) (= ~__return_1171~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_50~0#1|) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~31#1| 1)) (<= 0 |ULTIMATE.start_main_~assert__arg~21#1|) (<= ~send1~0 127) (<= ~st1~0 0) (= ~__return_3264~0 0) (= ~__return_2711~0 0) (= ~__return_1441~0 0) (<= 0 (+ ~p3_old~0 1)) (= ~__return_1141~0 0) (<= 1 ~__return_3325~0) (<= ~mode2~0 1) (= ~__return_1491~0 0) (<= 0 ~st1~0) (<= ~r1~0 257) (<= ~__return_103~0 1) (<= 0 ~st2~0) (<= ~__return_1521~0 1) (<= ~mode3~0 1) (= ~__return_1311~0 0) (= ~__return_1251~0 0) (= ~__return_3177~0 0) (= ~__return_1321~0 0) (<= 0 ~__return_2299~0) (= ~__return_3610~0 0) (<= ~__return_1371~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (= ~__return_1551~0 0) (<= ~id1~0 127) (= ~__return_1531~0 0) (<= (+ ~p3_old~0 1) 0) (= ~__return_4015~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~34#1| 1)) (= ~__return_3499~0 0) (= ~__return_1561~0 0) (<= |ULTIMATE.start_main_~__tmp_50~0#1| 1) (<= ~__return_1191~0 0) (<= 0 ~__return_1101~0) (= ~__return_1131~0 0) (<= |ULTIMATE.start_main_~assert__arg~49#1| 1) (<= ~__return_1301~0 0) (<= ~__return_3928~0 0) (<= 0 ~__return_1371~0) (= ~__return_2650~0 0) (= |ULTIMATE.start_main_~check__tmp~49#1| 1) (<= 0 ~__return_1351~0) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_1431~0 0) (= ~__return_2798~0 0) (<= ~__return_1221~0 0) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (<= ~__return_5061~0 1) (= ~__return_3817~0 0) (<= (+ ~p2_new~0 1) 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~13#1| 127) (<= 0 ~__return_1211~0) (<= ~__return_1361~0 0) (<= 0 ~__return_1221~0) (<= ~__return_1101~0 0) (= ~__return_1261~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~45#1| 1) 0) (<= 0 ~__return_4237~0) (= ~__return_1201~0 0) (<= ~__return_1211~0 0) (<= |ULTIMATE.start_main_~assert__arg~21#1| 1) (= ~__return_2885~0 0) (= ~__return_1481~0 0) (<= ~__return_1341~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (= ~__return_2563~0 0) (<= ~id3~0 127) (<= ~__return_2299~0 0) (<= ~__return_1151~0 0) (<= 0 ~__return_2215~0) (= ~__return_1501~0 0) (<= ~__return_1351~0 0) (<= 0 ~id2~0) (= |#NULL.offset| 0) (<= 0 (+ ~nomsg~0 1)) (<= (+ |ULTIMATE.start_main_~node2__m2~34#1| 1) 0) (<= ~__return_4237~0 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1| 127) (<= ~__return_4126~0 0) (<= 0 ~__return_1291~0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (<= |ULTIMATE.start_main_~__tmp_22~0#1| 1) (<= 1 ~__return_1521~0) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (= ~__return_2061~0 0) (<= (+ ~p3_new~0 1) 0) (<= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (= ~__return_1161~0 0) (= ~__return_1951~0 0) (= ~p3~0 0) (<= 0 ~__return_4126~0) (<= 0 (+ ~p1_new~0 1)) (<= ~__return_2215~0 0) (<= 0 ~__return_1191~0) (<= |ULTIMATE.start_main_~check__tmp~58#1| 1) (<= 0 ~__return_1341~0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1|) (<= 0 ~__return_3928~0) (= ~p1~0 0) (= ~__return_1541~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 ~send1~0) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (<= ~__return_1291~0 0) (= ~__return_main~0 0) (<= 0 ~__return_1151~0) (= ~__return_3412~0 0) (<= 0 ~__return_1301~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~11#1| 1)) (<= 0 ~__return_1361~0) (= ~__return_2996~0 0) (= ~__return_1111~0 0) (<= 1 |ULTIMATE.start_main_~init__tmp~0#1|) (<= (+ |ULTIMATE.start_main_~node3__m3~31#1| 1) 0) (= ~__return_1511~0 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= ~__return_1411~0 0) (= |ULTIMATE.start_main_~main__i2~0#1| 0))' at error location [2022-12-14 10:08:48,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:08:48,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:08:48,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 23] total 59 [2022-12-14 10:08:48,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348491654] [2022-12-14 10:08:48,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:08:48,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 10:08:48,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:08:48,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 10:08:48,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1802, Invalid=9970, Unknown=0, NotChecked=0, Total=11772 [2022-12-14 10:08:48,864 INFO L87 Difference]: Start difference. First operand 9300 states and 12171 transitions. Second operand has 59 states, 59 states have (on average 3.711864406779661) internal successors, (219), 59 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:46,536 INFO L93 Difference]: Finished difference Result 30949 states and 40749 transitions. [2022-12-14 10:10:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2022-12-14 10:10:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.711864406779661) internal successors, (219), 59 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 10:10:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:46,566 INFO L225 Difference]: With dead ends: 30949 [2022-12-14 10:10:46,566 INFO L226 Difference]: Without dead ends: 26917 [2022-12-14 10:10:46,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 119 SyntacticMatches, 13 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55386 ImplicationChecksByTransitivity, 165.6s TimeCoverageRelationStatistics Valid=12206, Invalid=112756, Unknown=0, NotChecked=0, Total=124962 [2022-12-14 10:10:46,579 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 7877 mSDsluCounter, 4636 mSDsCounter, 0 mSdLazyCounter, 10126 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7877 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 10689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 10126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:46,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7877 Valid, 4931 Invalid, 10689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 10126 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-12-14 10:10:46,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26917 states. [2022-12-14 10:10:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26917 to 13953. [2022-12-14 10:10:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13953 states, 13952 states have (on average 1.300315366972477) internal successors, (18142), 13952 states have internal predecessors, (18142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13953 states to 13953 states and 18142 transitions. [2022-12-14 10:10:56,265 INFO L78 Accepts]: Start accepts. Automaton has 13953 states and 18142 transitions. Word has length 74 [2022-12-14 10:10:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:56,266 INFO L495 AbstractCegarLoop]: Abstraction has 13953 states and 18142 transitions. [2022-12-14 10:10:56,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.711864406779661) internal successors, (219), 59 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:10:56,266 INFO L276 IsEmpty]: Start isEmpty. Operand 13953 states and 18142 transitions. [2022-12-14 10:10:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:10:56,267 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:56,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:56,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 10:10:56,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 10:10:56,469 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:10:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2020290141, now seen corresponding path program 1 times [2022-12-14 10:10:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:56,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359744930] [2022-12-14 10:10:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:10:56,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:56,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359744930] [2022-12-14 10:10:56,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359744930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:56,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:10:56,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:10:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591181963] [2022-12-14 10:10:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:10:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:10:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:10:56,584 INFO L87 Difference]: Start difference. First operand 13953 states and 18142 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:09,427 INFO L93 Difference]: Finished difference Result 19382 states and 25116 transitions. [2022-12-14 10:11:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:11:09,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 10:11:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:09,443 INFO L225 Difference]: With dead ends: 19382 [2022-12-14 10:11:09,443 INFO L226 Difference]: Without dead ends: 16826 [2022-12-14 10:11:09,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:11:09,447 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1375 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:09,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 647 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:11:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16826 states. [2022-12-14 10:11:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16826 to 13953. [2022-12-14 10:11:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13953 states, 13952 states have (on average 1.3002436926605505) internal successors, (18141), 13952 states have internal predecessors, (18141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13953 states to 13953 states and 18141 transitions. [2022-12-14 10:11:19,367 INFO L78 Accepts]: Start accepts. Automaton has 13953 states and 18141 transitions. Word has length 74 [2022-12-14 10:11:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:19,367 INFO L495 AbstractCegarLoop]: Abstraction has 13953 states and 18141 transitions. [2022-12-14 10:11:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13953 states and 18141 transitions. [2022-12-14 10:11:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:11:19,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:19,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 10:11:19,369 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:11:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash -446666058, now seen corresponding path program 1 times [2022-12-14 10:11:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:11:19,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971349273] [2022-12-14 10:11:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:11:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:19,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:11:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971349273] [2022-12-14 10:11:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971349273] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:11:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715930257] [2022-12-14 10:11:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:19,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:11:19,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:11:19,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:11:19,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:11:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 10:11:20,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:20,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:11:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:21,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715930257] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:11:21,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297376394] [2022-12-14 10:11:21,618 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 10:11:21,618 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:11:21,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:11:21,618 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:11:21,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:11:21,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:11:21,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:11:21,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:11:21,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:11:21,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:11:21,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:11:21,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:11:23,493 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:11:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1297376394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:49,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:11:49,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [14, 15, 14] total 64 [2022-12-14 10:11:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674066234] [2022-12-14 10:11:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 10:11:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:11:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 10:11:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=3406, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 10:11:49,317 INFO L87 Difference]: Start difference. First operand 13953 states and 18141 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:07,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:07,302 INFO L93 Difference]: Finished difference Result 15971 states and 20742 transitions. [2022-12-14 10:12:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 10:12:07,303 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 10:12:07,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:07,315 INFO L225 Difference]: With dead ends: 15971 [2022-12-14 10:12:07,315 INFO L226 Difference]: Without dead ends: 13548 [2022-12-14 10:12:07,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 170 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=626, Invalid=3406, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 10:12:07,318 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 5 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:07,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 552 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-12-14 10:12:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13548 states. [2022-12-14 10:12:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13548 to 13548. [2022-12-14 10:12:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13548 states, 13547 states have (on average 1.3013951428360522) internal successors, (17630), 13547 states have internal predecessors, (17630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13548 states to 13548 states and 17630 transitions. [2022-12-14 10:12:16,694 INFO L78 Accepts]: Start accepts. Automaton has 13548 states and 17630 transitions. Word has length 74 [2022-12-14 10:12:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:16,694 INFO L495 AbstractCegarLoop]: Abstraction has 13548 states and 17630 transitions. [2022-12-14 10:12:16,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 13548 states and 17630 transitions. [2022-12-14 10:12:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 10:12:16,696 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:16,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:16,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:12:16,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-14 10:12:16,897 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:12:16,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash -115159485, now seen corresponding path program 1 times [2022-12-14 10:12:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:16,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398219835] [2022-12-14 10:12:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:16,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:17,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:17,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398219835] [2022-12-14 10:12:17,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398219835] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:17,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063913844] [2022-12-14 10:12:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:17,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:17,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:17,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:17,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:12:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:17,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 10:12:17,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:18,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:19,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063913844] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:19,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [560355084] [2022-12-14 10:12:19,177 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 10:12:19,177 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:12:19,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:12:19,177 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:12:19,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:12:19,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:12:19,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:12:19,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:12:19,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:12:19,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:12:19,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:12:19,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:12:21,630 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:12:55,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [560355084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:55,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:12:55,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [14, 15, 14] total 69 [2022-12-14 10:12:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80842366] [2022-12-14 10:12:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 10:12:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 10:12:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=3994, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 10:12:55,622 INFO L87 Difference]: Start difference. First operand 13548 states and 17630 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:13:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:18,162 INFO L93 Difference]: Finished difference Result 15415 states and 20031 transitions. [2022-12-14 10:13:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 10:13:18,163 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-14 10:13:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:18,175 INFO L225 Difference]: With dead ends: 15415 [2022-12-14 10:13:18,175 INFO L226 Difference]: Without dead ends: 13534 [2022-12-14 10:13:18,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 161 SyntacticMatches, 10 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2540 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=698, Invalid=3994, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 10:13:18,179 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 6 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 5302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:18,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 432 Invalid, 5302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5301 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-12-14 10:13:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13534 states. [2022-12-14 10:13:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13534 to 13533. [2022-12-14 10:13:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13533 states, 13532 states have (on average 1.3015075376884422) internal successors, (17612), 13532 states have internal predecessors, (17612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:13:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 17612 transitions. [2022-12-14 10:13:27,515 INFO L78 Accepts]: Start accepts. Automaton has 13533 states and 17612 transitions. Word has length 75 [2022-12-14 10:13:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:27,516 INFO L495 AbstractCegarLoop]: Abstraction has 13533 states and 17612 transitions. [2022-12-14 10:13:27,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:13:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 13533 states and 17612 transitions. [2022-12-14 10:13:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 10:13:27,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:27,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:27,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 10:13:27,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:27,719 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 10:13:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2102098653, now seen corresponding path program 1 times [2022-12-14 10:13:27,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:13:27,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836537972] [2022-12-14 10:13:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:13:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:29,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:13:29,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836537972] [2022-12-14 10:13:29,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836537972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:13:29,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139044098] [2022-12-14 10:13:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:29,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:29,004 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:13:29,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fae80b7-1fb8-4c01-bcb2-1914f5eea587/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 10:13:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:29,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 10:13:29,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:32,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:14:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:14:04,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139044098] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:14:04,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145297145] [2022-12-14 10:14:04,344 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 10:14:04,344 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:14:04,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:14:04,344 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:14:04,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:14:04,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:14:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:14:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:14:04,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:14:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:14:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:14:04,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 10:14:06,588 INFO L180 IcfgInterpreter]: Interpretation finished