./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0 --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 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 --- 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-e04fb08 [2022-11-16 20:05:23,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:05:23,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:05:23,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:05:23,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:05:24,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:05:24,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:05:24,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:05:24,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:05:24,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:05:24,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:05:24,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:05:24,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:05:24,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:05:24,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:05:24,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:05:24,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:05:24,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:05:24,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:05:24,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:05:24,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:05:24,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:05:24,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:05:24,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:05:24,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:05:24,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:05:24,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:05:24,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:05:24,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:05:24,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:05:24,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:05:24,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:05:24,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:05:24,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:05:24,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:05:24,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:05:24,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:05:24,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:05:24,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:05:24,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:05:24,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:05:24,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:05:24,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:05:24,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:05:24,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:05:24,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:05:24,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:05:24,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:05:24,141 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:05:24,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:05:24,141 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:05:24,141 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:05:24,142 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:05:24,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:05:24,143 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:05:24,143 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:05:24,143 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:05:24,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:05:24,144 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:05:24,144 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:05:24,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:05:24,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:05:24,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:05:24,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:05:24,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:05:24,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:05:24,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:05:24,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:05:24,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:05:24,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:05:24,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:05:24,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:05:24,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:05:24,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:05:24,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:05:24,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:05:24,149 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:05:24,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:05:24,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:05:24,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:05:24,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:05:24,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:05:24,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:05:24,150 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 [2022-11-16 20:05:24,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:05:24,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:05:24,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:05:24,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:05:24,477 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:05:24,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-16 20:05:24,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/data/5b8eae521/6f7e9373dbbf469eaf9655dc72d821ff/FLAGe1810d490 [2022-11-16 20:05:25,332 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:05:25,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-16 20:05:25,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/data/5b8eae521/6f7e9373dbbf469eaf9655dc72d821ff/FLAGe1810d490 [2022-11-16 20:05:25,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/data/5b8eae521/6f7e9373dbbf469eaf9655dc72d821ff [2022-11-16 20:05:25,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:05:25,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:05:25,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:05:25,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:05:25,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:05:25,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:05:25" (1/1) ... [2022-11-16 20:05:25,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445c8f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:25, skipping insertion in model container [2022-11-16 20:05:25,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:05:25" (1/1) ... [2022-11-16 20:05:25,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:05:26,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:05:26,792 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2022-11-16 20:05:26,849 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2022-11-16 20:05:27,022 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2022-11-16 20:05:27,067 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2022-11-16 20:05:27,100 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2022-11-16 20:05:27,146 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2022-11-16 20:05:27,176 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2022-11-16 20:05:27,199 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2022-11-16 20:05:27,296 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2022-11-16 20:05:27,305 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2022-11-16 20:05:27,335 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2022-11-16 20:05:27,377 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2022-11-16 20:05:27,470 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2022-11-16 20:05:27,550 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2022-11-16 20:05:27,610 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2022-11-16 20:05:27,671 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2022-11-16 20:05:27,741 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2022-11-16 20:05:27,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:05:28,016 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:05:28,118 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2022-11-16 20:05:28,141 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2022-11-16 20:05:28,196 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2022-11-16 20:05:28,214 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2022-11-16 20:05:28,227 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2022-11-16 20:05:28,252 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2022-11-16 20:05:28,270 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2022-11-16 20:05:28,286 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2022-11-16 20:05:28,362 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2022-11-16 20:05:28,393 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2022-11-16 20:05:28,412 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2022-11-16 20:05:28,425 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2022-11-16 20:05:28,473 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2022-11-16 20:05:28,529 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2022-11-16 20:05:28,581 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2022-11-16 20:05:28,636 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2022-11-16 20:05:28,702 WARN L229 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_e9776cae-3c28-40e1-b76d-12b274ba90fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2022-11-16 20:05:28,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:05:28,992 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:05:28,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28 WrapperNode [2022-11-16 20:05:28,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:05:28,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:05:28,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:05:28,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:05:29,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,451 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16771 [2022-11-16 20:05:29,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:05:29,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:05:29,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:05:29,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:05:29,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:05:29,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:05:29,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:05:29,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:05:29,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (1/1) ... [2022-11-16 20:05:29,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:05:29,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:05:29,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:05:29,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9776cae-3c28-40e1-b76d-12b274ba90fb/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:05:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:05:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:05:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:05:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:05:30,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:05:30,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:05:38,219 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:05:39,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:05:39,594 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 20:05:39,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:05:39 BoogieIcfgContainer [2022-11-16 20:05:39,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:05:39,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:05:39,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:05:39,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:05:39,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:05:25" (1/3) ... [2022-11-16 20:05:39,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50850e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:05:39, skipping insertion in model container [2022-11-16 20:05:39,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:05:28" (2/3) ... [2022-11-16 20:05:39,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50850e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:05:39, skipping insertion in model container [2022-11-16 20:05:39,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:05:39" (3/3) ... [2022-11-16 20:05:39,612 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-16 20:05:39,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:05:39,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-16 20:05:39,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:05:39,743 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;@35ff4623, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:05:39,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 20:05:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 20:05:39,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:39,804 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] [2022-11-16 20:05:39,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:05:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash 600254357, now seen corresponding path program 1 times [2022-11-16 20:05:39,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:39,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138081642] [2022-11-16 20:05:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:39,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:05:40,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:40,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138081642] [2022-11-16 20:05:40,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138081642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:40,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:40,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:05:40,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204009792] [2022-11-16 20:05:40,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:05:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:05:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:05:40,699 INFO L87 Difference]: Start difference. First operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:05:44,689 INFO L93 Difference]: Finished difference Result 5637 states and 10090 transitions. [2022-11-16 20:05:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:05:44,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-16 20:05:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:05:44,719 INFO L225 Difference]: With dead ends: 5637 [2022-11-16 20:05:44,719 INFO L226 Difference]: Without dead ends: 3311 [2022-11-16 20:05:44,728 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 [2022-11-16 20:05:44,731 INFO L413 NwaCegarLoop]: 2567 mSDtfsCounter, 16167 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16167 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:05:44,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16167 Valid, 3202 Invalid, 2809 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 20:05:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2022-11-16 20:05:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3291. [2022-11-16 20:05:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 3274 states have (on average 1.3194868662186927) internal successors, (4320), 3290 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4320 transitions. [2022-11-16 20:05:44,971 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4320 transitions. Word has length 63 [2022-11-16 20:05:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:05:44,972 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 4320 transitions. [2022-11-16 20:05:44,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4320 transitions. [2022-11-16 20:05:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 20:05:44,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:44,980 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] [2022-11-16 20:05:44,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:05:44,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:05:44,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1509750167, now seen corresponding path program 1 times [2022-11-16 20:05:44,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:44,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592178108] [2022-11-16 20:05:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:44,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:05:45,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:45,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592178108] [2022-11-16 20:05:45,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592178108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:45,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:45,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:05:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333064318] [2022-11-16 20:05:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:05:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:45,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:05:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:05:45,231 INFO L87 Difference]: Start difference. First operand 3291 states and 4320 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:05:48,507 INFO L93 Difference]: Finished difference Result 6332 states and 8314 transitions. [2022-11-16 20:05:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:05:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-16 20:05:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:05:48,523 INFO L225 Difference]: With dead ends: 6332 [2022-11-16 20:05:48,524 INFO L226 Difference]: Without dead ends: 4332 [2022-11-16 20:05:48,528 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 [2022-11-16 20:05:48,530 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 11169 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11169 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:05:48,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11169 Valid, 1871 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 20:05:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2022-11-16 20:05:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4308. [2022-11-16 20:05:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4291 states have (on average 1.3146119785597763) internal successors, (5641), 4307 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5641 transitions. [2022-11-16 20:05:48,723 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5641 transitions. Word has length 63 [2022-11-16 20:05:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:05:48,724 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 5641 transitions. [2022-11-16 20:05:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5641 transitions. [2022-11-16 20:05:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 20:05:48,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:48,731 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] [2022-11-16 20:05:48,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:05:48,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:05:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976619, now seen corresponding path program 1 times [2022-11-16 20:05:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:48,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856089544] [2022-11-16 20:05:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:05:48,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856089544] [2022-11-16 20:05:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856089544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:48,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:48,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:05:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722124394] [2022-11-16 20:05:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:05:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:05:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:05:48,955 INFO L87 Difference]: Start difference. First operand 4308 states and 5641 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:05:51,683 INFO L93 Difference]: Finished difference Result 8650 states and 11301 transitions. [2022-11-16 20:05:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:05:51,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-16 20:05:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:05:51,703 INFO L225 Difference]: With dead ends: 8650 [2022-11-16 20:05:51,703 INFO L226 Difference]: Without dead ends: 5867 [2022-11-16 20:05:51,709 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 [2022-11-16 20:05:51,712 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 9682 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9682 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:05:51,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9682 Valid, 1727 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 20:05:51,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2022-11-16 20:05:51,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5840. [2022-11-16 20:05:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5823 states have (on average 1.3123819337111455) internal successors, (7642), 5839 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 7642 transitions. [2022-11-16 20:05:52,018 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 7642 transitions. Word has length 64 [2022-11-16 20:05:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:05:52,020 INFO L495 AbstractCegarLoop]: Abstraction has 5840 states and 7642 transitions. [2022-11-16 20:05:52,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 7642 transitions. [2022-11-16 20:05:52,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 20:05:52,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:52,031 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] [2022-11-16 20:05:52,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:05:52,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:05:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash 767039615, now seen corresponding path program 1 times [2022-11-16 20:05:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:52,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768370713] [2022-11-16 20:05:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:52,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:05:52,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:52,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768370713] [2022-11-16 20:05:52,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768370713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:52,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:52,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:05:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757865814] [2022-11-16 20:05:52,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:52,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:05:52,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:05:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:05:52,280 INFO L87 Difference]: Start difference. First operand 5840 states and 7642 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:05:54,450 INFO L93 Difference]: Finished difference Result 11150 states and 14652 transitions. [2022-11-16 20:05:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:05:54,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-16 20:05:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:05:54,478 INFO L225 Difference]: With dead ends: 11150 [2022-11-16 20:05:54,479 INFO L226 Difference]: Without dead ends: 7338 [2022-11-16 20:05:54,486 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 [2022-11-16 20:05:54,486 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 8123 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8123 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:05:54,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8123 Valid, 1483 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 20:05:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2022-11-16 20:05:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 7303. [2022-11-16 20:05:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7286 states have (on average 1.3192423826516608) internal successors, (9612), 7302 states have internal predecessors, (9612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 9612 transitions. [2022-11-16 20:05:55,013 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 9612 transitions. Word has length 65 [2022-11-16 20:05:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:05:55,018 INFO L495 AbstractCegarLoop]: Abstraction has 7303 states and 9612 transitions. [2022-11-16 20:05:55,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:05:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 9612 transitions. [2022-11-16 20:05:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 20:05:55,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:05:55,028 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] [2022-11-16 20:05:55,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:05:55,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:05:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:05:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1941175905, now seen corresponding path program 1 times [2022-11-16 20:05:55,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:05:55,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030723866] [2022-11-16 20:05:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:05:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:05:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:05:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:05:55,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:05:55,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030723866] [2022-11-16 20:05:55,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030723866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:05:55,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:05:55,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:05:55,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846905378] [2022-11-16 20:05:55,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:05:55,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:05:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:05:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:05:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:05:55,468 INFO L87 Difference]: Start difference. First operand 7303 states and 9612 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:01,194 INFO L93 Difference]: Finished difference Result 12557 states and 16727 transitions. [2022-11-16 20:06:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 20:06:01,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-16 20:06:01,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:01,235 INFO L225 Difference]: With dead ends: 12557 [2022-11-16 20:06:01,235 INFO L226 Difference]: Without dead ends: 11630 [2022-11-16 20:06:01,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:06:01,241 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 10079 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 6430 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10079 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 6564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 6430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:01,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10079 Valid, 5128 Invalid, 6564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 6430 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 20:06:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2022-11-16 20:06:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 7262. [2022-11-16 20:06:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7262 states, 7245 states have (on average 1.3189786059351276) internal successors, (9556), 7261 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7262 states to 7262 states and 9556 transitions. [2022-11-16 20:06:01,948 INFO L78 Accepts]: Start accepts. Automaton has 7262 states and 9556 transitions. Word has length 65 [2022-11-16 20:06:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:01,949 INFO L495 AbstractCegarLoop]: Abstraction has 7262 states and 9556 transitions. [2022-11-16 20:06:01,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7262 states and 9556 transitions. [2022-11-16 20:06:01,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 20:06:01,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:01,956 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] [2022-11-16 20:06:01,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:06:01,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:01,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:01,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1194049603, now seen corresponding path program 1 times [2022-11-16 20:06:01,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:01,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633110063] [2022-11-16 20:06:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:01,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:02,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:02,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633110063] [2022-11-16 20:06:02,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633110063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:02,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:02,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:06:02,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560491691] [2022-11-16 20:06:02,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:02,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:06:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:06:02,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:06:02,357 INFO L87 Difference]: Start difference. First operand 7262 states and 9556 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) [2022-11-16 20:06:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:06,191 INFO L93 Difference]: Finished difference Result 10823 states and 14510 transitions. [2022-11-16 20:06:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:06:06,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-16 20:06:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:06,216 INFO L225 Difference]: With dead ends: 10823 [2022-11-16 20:06:06,216 INFO L226 Difference]: Without dead ends: 9806 [2022-11-16 20:06:06,220 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 [2022-11-16 20:06:06,221 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 8773 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8773 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:06,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8773 Valid, 3845 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 20:06:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9806 states. [2022-11-16 20:06:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9806 to 7135. [2022-11-16 20:06:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3189098061253162) internal successors, (9388), 7134 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9388 transitions. [2022-11-16 20:06:06,818 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9388 transitions. Word has length 65 [2022-11-16 20:06:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:06,818 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 9388 transitions. [2022-11-16 20:06:06,819 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) [2022-11-16 20:06:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9388 transitions. [2022-11-16 20:06:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 20:06:06,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:06,826 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] [2022-11-16 20:06:06,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:06:06,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -780640952, now seen corresponding path program 1 times [2022-11-16 20:06:06,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:06,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780596460] [2022-11-16 20:06:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:07,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780596460] [2022-11-16 20:06:07,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780596460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:07,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:07,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:06:07,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269753193] [2022-11-16 20:06:07,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:06:07,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:06:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:06:07,157 INFO L87 Difference]: Start difference. First operand 7135 states and 9388 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:11,542 INFO L93 Difference]: Finished difference Result 9809 states and 12929 transitions. [2022-11-16 20:06:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 20:06:11,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-16 20:06:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:11,565 INFO L225 Difference]: With dead ends: 9809 [2022-11-16 20:06:11,565 INFO L226 Difference]: Without dead ends: 9801 [2022-11-16 20:06:11,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-16 20:06:11,570 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 5846 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5846 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:11,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5846 Valid, 4922 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 5605 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-16 20:06:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2022-11-16 20:06:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 7135. [2022-11-16 20:06:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3187693172239394) internal successors, (9387), 7134 states have internal predecessors, (9387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9387 transitions. [2022-11-16 20:06:12,175 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9387 transitions. Word has length 66 [2022-11-16 20:06:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:12,175 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 9387 transitions. [2022-11-16 20:06:12,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9387 transitions. [2022-11-16 20:06:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 20:06:12,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:12,184 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] [2022-11-16 20:06:12,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 20:06:12,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1912274000, now seen corresponding path program 1 times [2022-11-16 20:06:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:12,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957721537] [2022-11-16 20:06:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:12,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:12,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:12,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957721537] [2022-11-16 20:06:12,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957721537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:12,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:12,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:06:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381316210] [2022-11-16 20:06:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:12,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:06:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:06:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:06:12,569 INFO L87 Difference]: Start difference. First operand 7135 states and 9387 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:17,045 INFO L93 Difference]: Finished difference Result 8303 states and 10922 transitions. [2022-11-16 20:06:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 20:06:17,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-16 20:06:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:17,061 INFO L225 Difference]: With dead ends: 8303 [2022-11-16 20:06:17,061 INFO L226 Difference]: Without dead ends: 8298 [2022-11-16 20:06:17,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-16 20:06:17,065 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 7142 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 5703 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7142 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:17,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7142 Valid, 5433 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 5703 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 20:06:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2022-11-16 20:06:17,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 7135. [2022-11-16 20:06:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3186288283225625) internal successors, (9386), 7134 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9386 transitions. [2022-11-16 20:06:17,589 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9386 transitions. Word has length 66 [2022-11-16 20:06:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:17,590 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 9386 transitions. [2022-11-16 20:06:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9386 transitions. [2022-11-16 20:06:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 20:06:17,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:17,599 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] [2022-11-16 20:06:17,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 20:06:17,599 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:17,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash -143652767, now seen corresponding path program 1 times [2022-11-16 20:06:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:17,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413153570] [2022-11-16 20:06:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:17,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:18,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:18,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413153570] [2022-11-16 20:06:18,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413153570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:18,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:18,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 20:06:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043191570] [2022-11-16 20:06:18,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:18,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 20:06:18,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 20:06:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 20:06:18,277 INFO L87 Difference]: Start difference. First operand 7135 states and 9386 transitions. Second operand has 10 states, 10 states have (on average 6.6) 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) [2022-11-16 20:06:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:22,275 INFO L93 Difference]: Finished difference Result 13443 states and 18278 transitions. [2022-11-16 20:06:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:06:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) 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 [2022-11-16 20:06:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:22,300 INFO L225 Difference]: With dead ends: 13443 [2022-11-16 20:06:22,300 INFO L226 Difference]: Without dead ends: 12513 [2022-11-16 20:06:22,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-11-16 20:06:22,305 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 6774 mSDsluCounter, 6099 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6774 SdHoareTripleChecker+Valid, 8290 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:22,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6774 Valid, 8290 Invalid, 1540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 20:06:22,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2022-11-16 20:06:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 7087. [2022-11-16 20:06:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7087 states, 7071 states have (on average 1.3186253712346203) internal successors, (9324), 7086 states have internal predecessors, (9324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 9324 transitions. [2022-11-16 20:06:23,125 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 9324 transitions. Word has length 66 [2022-11-16 20:06:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:23,125 INFO L495 AbstractCegarLoop]: Abstraction has 7087 states and 9324 transitions. [2022-11-16 20:06:23,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) 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) [2022-11-16 20:06:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 9324 transitions. [2022-11-16 20:06:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 20:06:23,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:23,134 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] [2022-11-16 20:06:23,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 20:06:23,134 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1525924249, now seen corresponding path program 1 times [2022-11-16 20:06:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:23,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105924032] [2022-11-16 20:06:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:23,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:23,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105924032] [2022-11-16 20:06:23,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105924032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:23,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:23,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 20:06:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057712694] [2022-11-16 20:06:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:23,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:06:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:06:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:06:23,867 INFO L87 Difference]: Start difference. First operand 7087 states and 9324 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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) [2022-11-16 20:06:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:28,119 INFO L93 Difference]: Finished difference Result 11298 states and 15279 transitions. [2022-11-16 20:06:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 20:06:28,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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 [2022-11-16 20:06:28,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:28,134 INFO L225 Difference]: With dead ends: 11298 [2022-11-16 20:06:28,134 INFO L226 Difference]: Without dead ends: 11294 [2022-11-16 20:06:28,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-16 20:06:28,137 INFO L413 NwaCegarLoop]: 2315 mSDtfsCounter, 13394 mSDsluCounter, 10068 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13394 SdHoareTripleChecker+Valid, 12383 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:28,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13394 Valid, 12383 Invalid, 1811 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 20:06:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11294 states. [2022-11-16 20:06:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11294 to 7083. [2022-11-16 20:06:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 7068 states have (on average 1.3186191284663271) internal successors, (9320), 7082 states have internal predecessors, (9320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 9320 transitions. [2022-11-16 20:06:29,184 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 9320 transitions. Word has length 66 [2022-11-16 20:06:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:29,184 INFO L495 AbstractCegarLoop]: Abstraction has 7083 states and 9320 transitions. [2022-11-16 20:06:29,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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) [2022-11-16 20:06:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 9320 transitions. [2022-11-16 20:06:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 20:06:29,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:29,191 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] [2022-11-16 20:06:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 20:06:29,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2095330879, now seen corresponding path program 1 times [2022-11-16 20:06:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:29,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817491040] [2022-11-16 20:06:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:29,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:29,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:29,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817491040] [2022-11-16 20:06:29,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817491040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:29,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:29,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 20:06:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030077708] [2022-11-16 20:06:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:29,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:06:29,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:06:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 20:06:29,715 INFO L87 Difference]: Start difference. First operand 7083 states and 9320 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-16 20:06:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:34,464 INFO L93 Difference]: Finished difference Result 12730 states and 17228 transitions. [2022-11-16 20:06:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:06:34,465 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 20:06:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:34,474 INFO L225 Difference]: With dead ends: 12730 [2022-11-16 20:06:34,475 INFO L226 Difference]: Without dead ends: 11747 [2022-11-16 20:06:34,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-11-16 20:06:34,479 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 16294 mSDsluCounter, 6105 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16294 SdHoareTripleChecker+Valid, 8296 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:34,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16294 Valid, 8296 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 20:06:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11747 states. [2022-11-16 20:06:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11747 to 7051. [2022-11-16 20:06:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3190733371233656) internal successors, (9281), 7050 states have internal predecessors, (9281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9281 transitions. [2022-11-16 20:06:35,599 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9281 transitions. Word has length 67 [2022-11-16 20:06:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:35,600 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 9281 transitions. [2022-11-16 20:06:35,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-16 20:06:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9281 transitions. [2022-11-16 20:06:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 20:06:35,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:35,607 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] [2022-11-16 20:06:35,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 20:06:35,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash 920345528, now seen corresponding path program 1 times [2022-11-16 20:06:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:35,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430667953] [2022-11-16 20:06:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:35,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:35,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430667953] [2022-11-16 20:06:35,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430667953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:35,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:35,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:06:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468289723] [2022-11-16 20:06:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:35,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:06:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:06:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:06:35,866 INFO L87 Difference]: Start difference. First operand 7051 states and 9281 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2022-11-16 20:06:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:41,338 INFO L93 Difference]: Finished difference Result 10861 states and 14568 transitions. [2022-11-16 20:06:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:06:41,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 20:06:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:41,347 INFO L225 Difference]: With dead ends: 10861 [2022-11-16 20:06:41,347 INFO L226 Difference]: Without dead ends: 9700 [2022-11-16 20:06:41,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-16 20:06:41,351 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 5718 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5718 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:41,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5718 Valid, 3598 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 20:06:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9700 states. [2022-11-16 20:06:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9700 to 7051. [2022-11-16 20:06:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3189312109152929) internal successors, (9280), 7050 states have internal predecessors, (9280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9280 transitions. [2022-11-16 20:06:42,602 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9280 transitions. Word has length 67 [2022-11-16 20:06:42,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:42,603 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 9280 transitions. [2022-11-16 20:06:42,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2022-11-16 20:06:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9280 transitions. [2022-11-16 20:06:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 20:06:42,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:42,610 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] [2022-11-16 20:06:42,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 20:06:42,610 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:42,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:42,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1407222430, now seen corresponding path program 1 times [2022-11-16 20:06:42,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:42,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574065095] [2022-11-16 20:06:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:42,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:42,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:42,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574065095] [2022-11-16 20:06:42,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574065095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:42,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:42,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:06:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331365073] [2022-11-16 20:06:42,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:42,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:06:42,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:06:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:06:42,882 INFO L87 Difference]: Start difference. First operand 7051 states and 9280 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) [2022-11-16 20:06:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:49,540 INFO L93 Difference]: Finished difference Result 11530 states and 15429 transitions. [2022-11-16 20:06:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 20:06:49,541 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 67 [2022-11-16 20:06:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:49,552 INFO L225 Difference]: With dead ends: 11530 [2022-11-16 20:06:49,552 INFO L226 Difference]: Without dead ends: 10633 [2022-11-16 20:06:49,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:06:49,555 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 5864 mSDsluCounter, 3742 mSDsCounter, 0 mSdLazyCounter, 5662 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5864 SdHoareTripleChecker+Valid, 4969 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 5662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:49,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5864 Valid, 4969 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 5662 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 20:06:49,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10633 states. [2022-11-16 20:06:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 7051. [2022-11-16 20:06:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3187890847072201) internal successors, (9279), 7050 states have internal predecessors, (9279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9279 transitions. [2022-11-16 20:06:50,792 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9279 transitions. Word has length 67 [2022-11-16 20:06:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:50,792 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 9279 transitions. [2022-11-16 20:06:50,792 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) [2022-11-16 20:06:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9279 transitions. [2022-11-16 20:06:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 20:06:50,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:50,799 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] [2022-11-16 20:06:50,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 20:06:50,799 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash -805185725, now seen corresponding path program 1 times [2022-11-16 20:06:50,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:50,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266956107] [2022-11-16 20:06:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:51,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266956107] [2022-11-16 20:06:51,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266956107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:51,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:51,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 20:06:51,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488112459] [2022-11-16 20:06:51,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:51,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:06:51,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:51,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:06:51,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 20:06:51,224 INFO L87 Difference]: Start difference. First operand 7051 states and 9279 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-16 20:06:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:58,651 INFO L93 Difference]: Finished difference Result 10481 states and 13880 transitions. [2022-11-16 20:06:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 20:06:58,651 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 20:06:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:58,661 INFO L225 Difference]: With dead ends: 10481 [2022-11-16 20:06:58,662 INFO L226 Difference]: Without dead ends: 9594 [2022-11-16 20:06:58,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-11-16 20:06:58,665 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 8469 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8469 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 7173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:58,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8469 Valid, 6342 Invalid, 7252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 7173 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 20:06:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9594 states. [2022-11-16 20:06:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9594 to 7059. [2022-11-16 20:06:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 7044 states have (on average 1.3189948892674617) internal successors, (9291), 7058 states have internal predecessors, (9291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 9291 transitions. [2022-11-16 20:06:59,918 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 9291 transitions. Word has length 67 [2022-11-16 20:06:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:59,918 INFO L495 AbstractCegarLoop]: Abstraction has 7059 states and 9291 transitions. [2022-11-16 20:06:59,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-16 20:06:59,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 9291 transitions. [2022-11-16 20:06:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 20:06:59,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:59,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:59,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 20:06:59,927 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:06:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1779932252, now seen corresponding path program 1 times [2022-11-16 20:06:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:59,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344903348] [2022-11-16 20:06:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:00,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:00,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344903348] [2022-11-16 20:07:00,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344903348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:00,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:00,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 20:07:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965511674] [2022-11-16 20:07:00,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:07:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:00,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:07:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 20:07:00,450 INFO L87 Difference]: Start difference. First operand 7059 states and 9291 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-16 20:07:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:10,180 INFO L93 Difference]: Finished difference Result 12321 states and 16331 transitions. [2022-11-16 20:07:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 20:07:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 20:07:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:10,197 INFO L225 Difference]: With dead ends: 12321 [2022-11-16 20:07:10,197 INFO L226 Difference]: Without dead ends: 11420 [2022-11-16 20:07:10,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-11-16 20:07:10,201 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 8081 mSDsluCounter, 6134 mSDsCounter, 0 mSdLazyCounter, 8808 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8081 SdHoareTripleChecker+Valid, 7374 SdHoareTripleChecker+Invalid, 8952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 8808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:10,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8081 Valid, 7374 Invalid, 8952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [144 Valid, 8808 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 20:07:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11420 states. [2022-11-16 20:07:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11420 to 7059. [2022-11-16 20:07:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 7044 states have (on average 1.3188529244747302) internal successors, (9290), 7058 states have internal predecessors, (9290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 9290 transitions. [2022-11-16 20:07:11,751 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 9290 transitions. Word has length 67 [2022-11-16 20:07:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:11,751 INFO L495 AbstractCegarLoop]: Abstraction has 7059 states and 9290 transitions. [2022-11-16 20:07:11,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2022-11-16 20:07:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 9290 transitions. [2022-11-16 20:07:11,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 20:07:11,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:11,760 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] [2022-11-16 20:07:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 20:07:11,760 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:07:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash 164568382, now seen corresponding path program 1 times [2022-11-16 20:07:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:11,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024654839] [2022-11-16 20:07:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:12,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:12,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024654839] [2022-11-16 20:07:12,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024654839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:12,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:12,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 20:07:12,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289742896] [2022-11-16 20:07:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:12,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 20:07:12,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 20:07:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 20:07:12,483 INFO L87 Difference]: Start difference. First operand 7059 states and 9290 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 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) [2022-11-16 20:07:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:33,879 INFO L93 Difference]: Finished difference Result 24618 states and 33857 transitions. [2022-11-16 20:07:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 20:07:33,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 20:07:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:33,912 INFO L225 Difference]: With dead ends: 24618 [2022-11-16 20:07:33,912 INFO L226 Difference]: Without dead ends: 23572 [2022-11-16 20:07:33,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=666, Invalid=2640, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 20:07:33,919 INFO L413 NwaCegarLoop]: 3471 mSDtfsCounter, 14662 mSDsluCounter, 21642 mSDsCounter, 0 mSdLazyCounter, 6858 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14662 SdHoareTripleChecker+Valid, 25113 SdHoareTripleChecker+Invalid, 6960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 6858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:33,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14662 Valid, 25113 Invalid, 6960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 6858 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 20:07:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23572 states. [2022-11-16 20:07:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23572 to 6895. [2022-11-16 20:07:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6881 states have (on average 1.3173957273652086) internal successors, (9065), 6894 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 9065 transitions. [2022-11-16 20:07:35,906 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 9065 transitions. Word has length 67 [2022-11-16 20:07:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:35,906 INFO L495 AbstractCegarLoop]: Abstraction has 6895 states and 9065 transitions. [2022-11-16 20:07:35,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 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) [2022-11-16 20:07:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 9065 transitions. [2022-11-16 20:07:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 20:07:35,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:35,912 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] [2022-11-16 20:07:35,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 20:07:35,912 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:07:35,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2055073312, now seen corresponding path program 1 times [2022-11-16 20:07:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:35,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957700394] [2022-11-16 20:07:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:35,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957700394] [2022-11-16 20:07:35,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957700394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:35,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:35,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:07:35,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620577916] [2022-11-16 20:07:35,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:35,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:07:35,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:07:35,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:35,991 INFO L87 Difference]: Start difference. First operand 6895 states and 9065 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:38,764 INFO L93 Difference]: Finished difference Result 9769 states and 12969 transitions. [2022-11-16 20:07:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:38,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 20:07:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:38,771 INFO L225 Difference]: With dead ends: 9769 [2022-11-16 20:07:38,771 INFO L226 Difference]: Without dead ends: 5890 [2022-11-16 20:07:38,775 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 [2022-11-16 20:07:38,786 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 1609 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:38,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 2127 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:07:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2022-11-16 20:07:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5872. [2022-11-16 20:07:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5862 states have (on average 1.3220743773456158) internal successors, (7750), 5871 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 7750 transitions. [2022-11-16 20:07:40,957 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 7750 transitions. Word has length 67 [2022-11-16 20:07:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:40,957 INFO L495 AbstractCegarLoop]: Abstraction has 5872 states and 7750 transitions. [2022-11-16 20:07:40,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:40,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 7750 transitions. [2022-11-16 20:07:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 20:07:40,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:40,963 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] [2022-11-16 20:07:40,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 20:07:40,963 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:07:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -985199678, now seen corresponding path program 1 times [2022-11-16 20:07:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:40,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525245726] [2022-11-16 20:07:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:41,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:41,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525245726] [2022-11-16 20:07:41,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525245726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:41,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:41,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:07:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080528936] [2022-11-16 20:07:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:07:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:07:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:41,113 INFO L87 Difference]: Start difference. First operand 5872 states and 7750 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:07:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:43,992 INFO L93 Difference]: Finished difference Result 9132 states and 12162 transitions. [2022-11-16 20:07:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2022-11-16 20:07:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:43,998 INFO L225 Difference]: With dead ends: 9132 [2022-11-16 20:07:43,998 INFO L226 Difference]: Without dead ends: 5534 [2022-11-16 20:07:44,001 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 [2022-11-16 20:07:44,002 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 1271 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:44,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1624 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:07:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2022-11-16 20:07:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5526. [2022-11-16 20:07:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5519 states have (on average 1.3303134625838013) internal successors, (7342), 5525 states have internal predecessors, (7342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 7342 transitions. [2022-11-16 20:07:46,407 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 7342 transitions. Word has length 68 [2022-11-16 20:07:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:46,408 INFO L495 AbstractCegarLoop]: Abstraction has 5526 states and 7342 transitions. [2022-11-16 20:07:46,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:07:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 7342 transitions. [2022-11-16 20:07:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 20:07:46,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:46,412 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] [2022-11-16 20:07:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 20:07:46,413 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:07:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash -746381525, now seen corresponding path program 1 times [2022-11-16 20:07:46,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:46,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054574563] [2022-11-16 20:07:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:46,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:46,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054574563] [2022-11-16 20:07:46,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054574563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:46,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:46,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:07:46,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959166831] [2022-11-16 20:07:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:07:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:07:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:46,506 INFO L87 Difference]: Start difference. First operand 5526 states and 7342 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:07:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:49,792 INFO L93 Difference]: Finished difference Result 8040 states and 10963 transitions. [2022-11-16 20:07:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:49,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2022-11-16 20:07:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:49,799 INFO L225 Difference]: With dead ends: 8040 [2022-11-16 20:07:49,799 INFO L226 Difference]: Without dead ends: 5649 [2022-11-16 20:07:49,802 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 [2022-11-16 20:07:49,803 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 755 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:49,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1937 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:07:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2022-11-16 20:07:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 4551. [2022-11-16 20:07:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 4544 states have (on average 1.3369278169014085) internal successors, (6075), 4550 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 6075 transitions. [2022-11-16 20:07:52,088 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 6075 transitions. Word has length 68 [2022-11-16 20:07:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:52,088 INFO L495 AbstractCegarLoop]: Abstraction has 4551 states and 6075 transitions. [2022-11-16 20:07:52,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:07:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 6075 transitions. [2022-11-16 20:07:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 20:07:52,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:52,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:52,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 20:07:52,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:07:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1614233913, now seen corresponding path program 1 times [2022-11-16 20:07:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:52,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124724123] [2022-11-16 20:07:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:52,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:52,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:52,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124724123] [2022-11-16 20:07:52,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124724123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:52,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:52,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:07:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829430203] [2022-11-16 20:07:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:52,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:07:52,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:07:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:52,187 INFO L87 Difference]: Start difference. First operand 4551 states and 6075 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:07:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:56,116 INFO L93 Difference]: Finished difference Result 9341 states and 12716 transitions. [2022-11-16 20:07:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:56,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2022-11-16 20:07:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:56,125 INFO L225 Difference]: With dead ends: 9341 [2022-11-16 20:07:56,125 INFO L226 Difference]: Without dead ends: 6946 [2022-11-16 20:07:56,128 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 [2022-11-16 20:07:56,129 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 776 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:56,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2463 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:07:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2022-11-16 20:08:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6938. [2022-11-16 20:08:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6938 states, 6931 states have (on average 1.3410763237628047) internal successors, (9295), 6937 states have internal predecessors, (9295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 9295 transitions. [2022-11-16 20:08:00,178 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 9295 transitions. Word has length 68 [2022-11-16 20:08:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:00,178 INFO L495 AbstractCegarLoop]: Abstraction has 6938 states and 9295 transitions. [2022-11-16 20:08:00,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:08:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 9295 transitions. [2022-11-16 20:08:00,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 20:08:00,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:00,181 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] [2022-11-16 20:08:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 20:08:00,182 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:08:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash -921778135, now seen corresponding path program 1 times [2022-11-16 20:08:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:00,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966531834] [2022-11-16 20:08:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:08:00,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:00,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966531834] [2022-11-16 20:08:00,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966531834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:00,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:00,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460423611] [2022-11-16 20:08:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:00,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:00,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:00,264 INFO L87 Difference]: Start difference. First operand 6938 states and 9295 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:08:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:05,604 INFO L93 Difference]: Finished difference Result 12652 states and 17436 transitions. [2022-11-16 20:08:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2022-11-16 20:08:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:05,614 INFO L225 Difference]: With dead ends: 12652 [2022-11-16 20:08:05,614 INFO L226 Difference]: Without dead ends: 8858 [2022-11-16 20:08:05,618 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 [2022-11-16 20:08:05,619 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 754 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:05,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1892 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:08:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2022-11-16 20:08:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 7869. [2022-11-16 20:08:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 7862 states have (on average 1.358305774612058) internal successors, (10679), 7868 states have internal predecessors, (10679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 10679 transitions. [2022-11-16 20:08:10,699 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 10679 transitions. Word has length 68 [2022-11-16 20:08:10,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:10,700 INFO L495 AbstractCegarLoop]: Abstraction has 7869 states and 10679 transitions. [2022-11-16 20:08:10,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:08:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 10679 transitions. [2022-11-16 20:08:10,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 20:08:10,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:10,703 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] [2022-11-16 20:08:10,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 20:08:10,703 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:08:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:10,703 INFO L85 PathProgramCache]: Analyzing trace with hash 563894881, now seen corresponding path program 1 times [2022-11-16 20:08:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:10,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077652258] [2022-11-16 20:08:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:10,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:08:10,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:10,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077652258] [2022-11-16 20:08:10,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077652258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:10,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:10,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628614163] [2022-11-16 20:08:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:10,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:10,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:10,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:10,779 INFO L87 Difference]: Start difference. First operand 7869 states and 10679 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:08:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:19,492 INFO L93 Difference]: Finished difference Result 18347 states and 25249 transitions. [2022-11-16 20:08:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:19,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2022-11-16 20:08:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:19,509 INFO L225 Difference]: With dead ends: 18347 [2022-11-16 20:08:19,509 INFO L226 Difference]: Without dead ends: 12437 [2022-11-16 20:08:19,515 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 [2022-11-16 20:08:19,516 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 662 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:19,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2497 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12437 states. [2022-11-16 20:08:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12437 to 12429. [2022-11-16 20:08:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12429 states, 12422 states have (on average 1.3509901787151828) internal successors, (16782), 12428 states have internal predecessors, (16782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12429 states to 12429 states and 16782 transitions. [2022-11-16 20:08:27,621 INFO L78 Accepts]: Start accepts. Automaton has 12429 states and 16782 transitions. Word has length 68 [2022-11-16 20:08:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:27,621 INFO L495 AbstractCegarLoop]: Abstraction has 12429 states and 16782 transitions. [2022-11-16 20:08:27,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-16 20:08:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 12429 states and 16782 transitions. [2022-11-16 20:08:27,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 20:08:27,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:27,625 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] [2022-11-16 20:08:27,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 20:08:27,626 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:08:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2399851, now seen corresponding path program 1 times [2022-11-16 20:08:27,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:27,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377035472] [2022-11-16 20:08:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:27,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:08:28,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:28,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377035472] [2022-11-16 20:08:28,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377035472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:28,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:28,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:08:28,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004432594] [2022-11-16 20:08:28,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:28,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:08:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:08:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:08:28,015 INFO L87 Difference]: Start difference. First operand 12429 states and 16782 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2022-11-16 20:08:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:45,138 INFO L93 Difference]: Finished difference Result 18559 states and 24960 transitions. [2022-11-16 20:08:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:08:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 [2022-11-16 20:08:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:45,161 INFO L225 Difference]: With dead ends: 18559 [2022-11-16 20:08:45,161 INFO L226 Difference]: Without dead ends: 17996 [2022-11-16 20:08:45,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-16 20:08:45,165 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 4188 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4188 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:45,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4188 Valid, 3476 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 20:08:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17996 states. [2022-11-16 20:08:53,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17996 to 12428. [2022-11-16 20:08:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12428 states, 12421 states have (on average 1.3509379277030835) internal successors, (16780), 12427 states have internal predecessors, (16780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12428 states to 12428 states and 16780 transitions. [2022-11-16 20:08:53,529 INFO L78 Accepts]: Start accepts. Automaton has 12428 states and 16780 transitions. Word has length 69 [2022-11-16 20:08:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:53,529 INFO L495 AbstractCegarLoop]: Abstraction has 12428 states and 16780 transitions. [2022-11-16 20:08:53,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2022-11-16 20:08:53,529 INFO L276 IsEmpty]: Start isEmpty. Operand 12428 states and 16780 transitions. [2022-11-16 20:08:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 20:08:53,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:53,533 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] [2022-11-16 20:08:53,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 20:08:53,534 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:08:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:53,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1878130755, now seen corresponding path program 1 times [2022-11-16 20:08:53,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:53,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439053213] [2022-11-16 20:08:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:08:54,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:54,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439053213] [2022-11-16 20:08:54,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439053213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:54,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:54,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 20:08:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818142998] [2022-11-16 20:08:54,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:54,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 20:08:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 20:08:54,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 20:08:54,310 INFO L87 Difference]: Start difference. First operand 12428 states and 16780 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-16 20:09:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:40,714 INFO L93 Difference]: Finished difference Result 49785 states and 67790 transitions. [2022-11-16 20:09:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 20:09:40,715 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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 [2022-11-16 20:09:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:40,799 INFO L225 Difference]: With dead ends: 49785 [2022-11-16 20:09:40,800 INFO L226 Difference]: Without dead ends: 49203 [2022-11-16 20:09:40,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 20:09:40,812 INFO L413 NwaCegarLoop]: 1808 mSDtfsCounter, 8962 mSDsluCounter, 12255 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8962 SdHoareTripleChecker+Valid, 14063 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:40,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8962 Valid, 14063 Invalid, 4084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 20:09:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49203 states. [2022-11-16 20:09:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49203 to 12408. [2022-11-16 20:09:50,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12408 states, 12402 states have (on average 1.3509111433639736) internal successors, (16754), 12407 states have internal predecessors, (16754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12408 states to 12408 states and 16754 transitions. [2022-11-16 20:09:50,188 INFO L78 Accepts]: Start accepts. Automaton has 12408 states and 16754 transitions. Word has length 69 [2022-11-16 20:09:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:50,189 INFO L495 AbstractCegarLoop]: Abstraction has 12408 states and 16754 transitions. [2022-11-16 20:09:50,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-16 20:09:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 12408 states and 16754 transitions. [2022-11-16 20:09:50,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 20:09:50,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:50,195 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] [2022-11-16 20:09:50,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 20:09:50,196 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:09:50,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash 177521083, now seen corresponding path program 1 times [2022-11-16 20:09:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:50,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954405608] [2022-11-16 20:09:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:50,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:09:50,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954405608] [2022-11-16 20:09:50,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954405608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:50,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:09:50,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:09:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785631712] [2022-11-16 20:09:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:09:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:09:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:09:50,569 INFO L87 Difference]: Start difference. First operand 12408 states and 16754 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2022-11-16 20:10:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:16,284 INFO L93 Difference]: Finished difference Result 26211 states and 35336 transitions. [2022-11-16 20:10:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 20:10:16,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 [2022-11-16 20:10:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:16,339 INFO L225 Difference]: With dead ends: 26211 [2022-11-16 20:10:16,340 INFO L226 Difference]: Without dead ends: 25011 [2022-11-16 20:10:16,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:10:16,349 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 5039 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5039 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:16,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5039 Valid, 3224 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 20:10:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25011 states. [2022-11-16 20:10:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25011 to 12371. [2022-11-16 20:10:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12371 states, 12365 states have (on average 1.3509098261221189) internal successors, (16704), 12370 states have internal predecessors, (16704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:10:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12371 states to 12371 states and 16704 transitions. [2022-11-16 20:10:25,446 INFO L78 Accepts]: Start accepts. Automaton has 12371 states and 16704 transitions. Word has length 69 [2022-11-16 20:10:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:25,447 INFO L495 AbstractCegarLoop]: Abstraction has 12371 states and 16704 transitions. [2022-11-16 20:10:25,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2022-11-16 20:10:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 12371 states and 16704 transitions. [2022-11-16 20:10:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 20:10:25,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:25,451 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] [2022-11-16 20:10:25,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 20:10:25,451 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:10:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1406960713, now seen corresponding path program 1 times [2022-11-16 20:10:25,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:25,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488356538] [2022-11-16 20:10:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:10:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:10:25,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:10:25,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488356538] [2022-11-16 20:10:25,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488356538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:10:25,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:10:25,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:10:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745720025] [2022-11-16 20:10:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:10:25,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:10:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:10:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:10:25,525 INFO L87 Difference]: Start difference. First operand 12371 states and 16704 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 20:10:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:36,659 INFO L93 Difference]: Finished difference Result 24409 states and 33310 transitions. [2022-11-16 20:10:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:10:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2022-11-16 20:10:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:36,681 INFO L225 Difference]: With dead ends: 24409 [2022-11-16 20:10:36,681 INFO L226 Difference]: Without dead ends: 13455 [2022-11-16 20:10:36,689 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 [2022-11-16 20:10:36,690 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 1150 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:36,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1701 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:10:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13455 states. [2022-11-16 20:10:45,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13455 to 10831. [2022-11-16 20:10:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 10825 states have (on average 1.360092378752887) internal successors, (14723), 10830 states have internal predecessors, (14723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:10:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14723 transitions. [2022-11-16 20:10:45,151 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14723 transitions. Word has length 69 [2022-11-16 20:10:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:45,152 INFO L495 AbstractCegarLoop]: Abstraction has 10831 states and 14723 transitions. [2022-11-16 20:10:45,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 20:10:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14723 transitions. [2022-11-16 20:10:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 20:10:45,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:45,154 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] [2022-11-16 20:10:45,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 20:10:45,155 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:10:45,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1898328567, now seen corresponding path program 1 times [2022-11-16 20:10:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:45,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859375316] [2022-11-16 20:10:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:10:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:10:45,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:10:45,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859375316] [2022-11-16 20:10:45,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859375316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:10:45,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:10:45,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:10:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360626955] [2022-11-16 20:10:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:10:45,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:10:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:10:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:10:45,223 INFO L87 Difference]: Start difference. First operand 10831 states and 14723 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 20:10:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:55,177 INFO L93 Difference]: Finished difference Result 21054 states and 28825 transitions. [2022-11-16 20:10:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:10:55,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2022-11-16 20:10:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:55,190 INFO L225 Difference]: With dead ends: 21054 [2022-11-16 20:10:55,190 INFO L226 Difference]: Without dead ends: 10993 [2022-11-16 20:10:55,199 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 [2022-11-16 20:10:55,199 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 921 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:55,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1576 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:10:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10993 states. [2022-11-16 20:11:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10993 to 9660. [2022-11-16 20:11:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3645121193287757) internal successors, (13173), 9659 states have internal predecessors, (13173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13173 transitions. [2022-11-16 20:11:03,221 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13173 transitions. Word has length 69 [2022-11-16 20:11:03,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:03,222 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13173 transitions. [2022-11-16 20:11:03,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 20:11:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13173 transitions. [2022-11-16 20:11:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 20:11:03,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:03,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 20:11:03,224 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:11:03,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash 936354534, now seen corresponding path program 1 times [2022-11-16 20:11:03,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:03,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103840275] [2022-11-16 20:11:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:03,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:03,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103840275] [2022-11-16 20:11:03,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103840275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:03,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:03,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:11:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41366776] [2022-11-16 20:11:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:11:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:11:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:11:03,523 INFO L87 Difference]: Start difference. First operand 9660 states and 13173 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:11:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:22,587 INFO L93 Difference]: Finished difference Result 17270 states and 23216 transitions. [2022-11-16 20:11:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 20:11:22,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 20:11:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:22,608 INFO L225 Difference]: With dead ends: 17270 [2022-11-16 20:11:22,608 INFO L226 Difference]: Without dead ends: 16666 [2022-11-16 20:11:22,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:11:22,613 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 4170 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4170 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:22,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4170 Valid, 2770 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 20:11:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16666 states. [2022-11-16 20:11:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16666 to 9660. [2022-11-16 20:11:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3644085353221462) internal successors, (13172), 9659 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13172 transitions. [2022-11-16 20:11:30,788 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13172 transitions. Word has length 70 [2022-11-16 20:11:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:30,788 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13172 transitions. [2022-11-16 20:11:30,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:11:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13172 transitions. [2022-11-16 20:11:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 20:11:30,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:30,790 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] [2022-11-16 20:11:30,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 20:11:30,790 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:11:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash 521195886, now seen corresponding path program 1 times [2022-11-16 20:11:30,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:30,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828565316] [2022-11-16 20:11:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:30,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:31,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:31,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828565316] [2022-11-16 20:11:31,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828565316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:31,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:31,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:11:31,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139810670] [2022-11-16 20:11:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:31,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:11:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:11:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:11:31,091 INFO L87 Difference]: Start difference. First operand 9660 states and 13172 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:11:46,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:46,777 INFO L93 Difference]: Finished difference Result 15444 states and 20868 transitions. [2022-11-16 20:11:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:11:46,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 20:11:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:46,796 INFO L225 Difference]: With dead ends: 15444 [2022-11-16 20:11:46,796 INFO L226 Difference]: Without dead ends: 14877 [2022-11-16 20:11:46,800 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 [2022-11-16 20:11:46,800 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 3460 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3460 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:46,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3460 Valid, 2788 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2814 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 20:11:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14877 states. [2022-11-16 20:11:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14877 to 9660. [2022-11-16 20:11:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.364304951315517) internal successors, (13171), 9659 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13171 transitions. [2022-11-16 20:11:55,127 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13171 transitions. Word has length 70 [2022-11-16 20:11:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:55,127 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13171 transitions. [2022-11-16 20:11:55,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:11:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13171 transitions. [2022-11-16 20:11:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 20:11:55,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:55,129 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] [2022-11-16 20:11:55,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 20:11:55,129 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:11:55,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:55,129 INFO L85 PathProgramCache]: Analyzing trace with hash 358544031, now seen corresponding path program 1 times [2022-11-16 20:11:55,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:55,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311018681] [2022-11-16 20:11:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:55,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:55,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311018681] [2022-11-16 20:11:55,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311018681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:55,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:55,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:11:55,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130689881] [2022-11-16 20:11:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:55,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:11:55,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:11:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:11:55,403 INFO L87 Difference]: Start difference. First operand 9660 states and 13171 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:12:08,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:08,830 INFO L93 Difference]: Finished difference Result 12473 states and 16733 transitions. [2022-11-16 20:12:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 20:12:08,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 20:12:08,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:08,844 INFO L225 Difference]: With dead ends: 12473 [2022-11-16 20:12:08,844 INFO L226 Difference]: Without dead ends: 11896 [2022-11-16 20:12:08,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:12:08,848 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 3861 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3861 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:08,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3861 Valid, 2638 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 20:12:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11896 states. [2022-11-16 20:12:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11896 to 9660. [2022-11-16 20:12:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3642013673088875) internal successors, (13170), 9659 states have internal predecessors, (13170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13170 transitions. [2022-11-16 20:12:16,963 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13170 transitions. Word has length 70 [2022-11-16 20:12:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13170 transitions. [2022-11-16 20:12:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:12:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13170 transitions. [2022-11-16 20:12:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 20:12:16,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:16,965 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] [2022-11-16 20:12:16,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 20:12:16,966 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:12:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1246023294, now seen corresponding path program 1 times [2022-11-16 20:12:16,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:16,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314594174] [2022-11-16 20:12:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:17,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:17,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314594174] [2022-11-16 20:12:17,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314594174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:17,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:17,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:12:17,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510609763] [2022-11-16 20:12:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:17,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:12:17,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:12:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:12:17,278 INFO L87 Difference]: Start difference. First operand 9660 states and 13170 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:12:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:33,770 INFO L93 Difference]: Finished difference Result 15444 states and 20866 transitions. [2022-11-16 20:12:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:12:33,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 20:12:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:33,790 INFO L225 Difference]: With dead ends: 15444 [2022-11-16 20:12:33,790 INFO L226 Difference]: Without dead ends: 14877 [2022-11-16 20:12:33,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-16 20:12:33,793 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 3440 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3440 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:33,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3440 Valid, 2852 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 20:12:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14877 states. [2022-11-16 20:12:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14877 to 9660. [2022-11-16 20:12:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.364097783302258) internal successors, (13169), 9659 states have internal predecessors, (13169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13169 transitions. [2022-11-16 20:12:42,255 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13169 transitions. Word has length 70 [2022-11-16 20:12:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:42,256 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13169 transitions. [2022-11-16 20:12:42,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:12:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13169 transitions. [2022-11-16 20:12:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 20:12:42,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:42,258 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] [2022-11-16 20:12:42,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 20:12:42,259 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:12:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1339094683, now seen corresponding path program 1 times [2022-11-16 20:12:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337584960] [2022-11-16 20:12:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:42,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:42,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337584960] [2022-11-16 20:12:42,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337584960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:42,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:42,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:12:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648126599] [2022-11-16 20:12:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:12:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:12:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:12:42,505 INFO L87 Difference]: Start difference. First operand 9660 states and 13169 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:12:56,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:56,603 INFO L93 Difference]: Finished difference Result 12761 states and 17102 transitions. [2022-11-16 20:12:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 20:12:56,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 20:12:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:56,618 INFO L225 Difference]: With dead ends: 12761 [2022-11-16 20:12:56,618 INFO L226 Difference]: Without dead ends: 12184 [2022-11-16 20:12:56,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:12:56,622 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 3836 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3836 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:56,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3836 Valid, 2643 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 20:12:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2022-11-16 20:13:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 9660. [2022-11-16 20:13:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9660 states, 9654 states have (on average 1.3639941992956288) internal successors, (13168), 9659 states have internal predecessors, (13168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9660 states to 9660 states and 13168 transitions. [2022-11-16 20:13:04,922 INFO L78 Accepts]: Start accepts. Automaton has 9660 states and 13168 transitions. Word has length 70 [2022-11-16 20:13:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:04,923 INFO L495 AbstractCegarLoop]: Abstraction has 9660 states and 13168 transitions. [2022-11-16 20:13:04,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2022-11-16 20:13:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states and 13168 transitions. [2022-11-16 20:13:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 20:13:04,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:04,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:13:04,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 20:13:04,925 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:13:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1762815561, now seen corresponding path program 1 times [2022-11-16 20:13:04,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:04,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095546783] [2022-11-16 20:13:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:13:05,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095546783] [2022-11-16 20:13:05,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095546783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:13:05,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:13:05,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 20:13:05,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237658645] [2022-11-16 20:13:05,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:05,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 20:13:05,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 20:13:05,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 20:13:05,678 INFO L87 Difference]: Start difference. First operand 9660 states and 13168 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:36,309 INFO L93 Difference]: Finished difference Result 27111 states and 36853 transitions. [2022-11-16 20:13:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 20:13:36,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-16 20:13:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:36,350 INFO L225 Difference]: With dead ends: 27111 [2022-11-16 20:13:36,350 INFO L226 Difference]: Without dead ends: 26538 [2022-11-16 20:13:36,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2022-11-16 20:13:36,356 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 7814 mSDsluCounter, 6254 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7814 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:36,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7814 Valid, 7615 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 20:13:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26538 states. [2022-11-16 20:13:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26538 to 9649. [2022-11-16 20:13:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9649 states, 9644 states have (on average 1.36395686437163) internal successors, (13154), 9648 states have internal predecessors, (13154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9649 states to 9649 states and 13154 transitions. [2022-11-16 20:13:45,520 INFO L78 Accepts]: Start accepts. Automaton has 9649 states and 13154 transitions. Word has length 72 [2022-11-16 20:13:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:45,521 INFO L495 AbstractCegarLoop]: Abstraction has 9649 states and 13154 transitions. [2022-11-16 20:13:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 9649 states and 13154 transitions. [2022-11-16 20:13:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 20:13:45,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:45,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:13:45,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 20:13:45,523 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:13:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:45,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1734379578, now seen corresponding path program 1 times [2022-11-16 20:13:45,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:45,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030862708] [2022-11-16 20:13:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:45,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:13:46,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030862708] [2022-11-16 20:13:46,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030862708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:13:46,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:13:46,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 20:13:46,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060852809] [2022-11-16 20:13:46,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:13:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:46,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:13:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:13:46,195 INFO L87 Difference]: Start difference. First operand 9649 states and 13154 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:14:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:14:04,641 INFO L93 Difference]: Finished difference Result 16680 states and 22638 transitions. [2022-11-16 20:14:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:14:04,641 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-16 20:14:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:14:04,671 INFO L225 Difference]: With dead ends: 16680 [2022-11-16 20:14:04,672 INFO L226 Difference]: Without dead ends: 16118 [2022-11-16 20:14:04,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:14:04,677 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 6257 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6257 SdHoareTripleChecker+Valid, 5001 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:14:04,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6257 Valid, 5001 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 20:14:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16118 states. [2022-11-16 20:14:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16118 to 9649. [2022-11-16 20:14:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9649 states, 9644 states have (on average 1.3638531729572791) internal successors, (13153), 9648 states have internal predecessors, (13153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:14:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9649 states to 9649 states and 13153 transitions. [2022-11-16 20:14:13,849 INFO L78 Accepts]: Start accepts. Automaton has 9649 states and 13153 transitions. Word has length 72 [2022-11-16 20:14:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:14:13,849 INFO L495 AbstractCegarLoop]: Abstraction has 9649 states and 13153 transitions. [2022-11-16 20:14:13,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:14:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9649 states and 13153 transitions. [2022-11-16 20:14:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 20:14:13,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:14:13,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:14:13,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 20:14:13,853 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:14:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:14:13,854 INFO L85 PathProgramCache]: Analyzing trace with hash 830639487, now seen corresponding path program 1 times [2022-11-16 20:14:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:14:13,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906998992] [2022-11-16 20:14:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:13,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:14:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:14:14,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:14:14,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906998992] [2022-11-16 20:14:14,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906998992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:14:14,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:14:14,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 20:14:14,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785204412] [2022-11-16 20:14:14,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:14:14,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:14:14,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:14:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:14:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:14:14,459 INFO L87 Difference]: Start difference. First operand 9649 states and 13153 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:14:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:14:31,563 INFO L93 Difference]: Finished difference Result 16679 states and 22636 transitions. [2022-11-16 20:14:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:14:31,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-16 20:14:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:14:31,585 INFO L225 Difference]: With dead ends: 16679 [2022-11-16 20:14:31,585 INFO L226 Difference]: Without dead ends: 16113 [2022-11-16 20:14:31,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:14:31,589 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 6115 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6115 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:14:31,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6115 Valid, 5849 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 20:14:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16113 states. [2022-11-16 20:14:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16113 to 9645. [2022-11-16 20:14:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9645 states, 9641 states have (on average 1.36375894616741) internal successors, (13148), 9644 states have internal predecessors, (13148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:14:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9645 states to 9645 states and 13148 transitions. [2022-11-16 20:14:40,670 INFO L78 Accepts]: Start accepts. Automaton has 9645 states and 13148 transitions. Word has length 73 [2022-11-16 20:14:40,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:14:40,670 INFO L495 AbstractCegarLoop]: Abstraction has 9645 states and 13148 transitions. [2022-11-16 20:14:40,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:14:40,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9645 states and 13148 transitions. [2022-11-16 20:14:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 20:14:40,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:14:40,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:14:40,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 20:14:40,674 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:14:40,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:14:40,674 INFO L85 PathProgramCache]: Analyzing trace with hash -581497913, now seen corresponding path program 1 times [2022-11-16 20:14:40,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:14:40,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539417410] [2022-11-16 20:14:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:14:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:14:41,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:14:41,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539417410] [2022-11-16 20:14:41,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539417410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:14:41,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:14:41,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 20:14:41,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332356208] [2022-11-16 20:14:41,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:14:41,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 20:14:41,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:14:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 20:14:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 20:14:41,308 INFO L87 Difference]: Start difference. First operand 9645 states and 13148 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:15:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:15:25,500 INFO L93 Difference]: Finished difference Result 35152 states and 47678 transitions. [2022-11-16 20:15:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 20:15:25,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-16 20:15:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:15:25,552 INFO L225 Difference]: With dead ends: 35152 [2022-11-16 20:15:25,552 INFO L226 Difference]: Without dead ends: 34569 [2022-11-16 20:15:25,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 20:15:25,560 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 6625 mSDsluCounter, 9299 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6625 SdHoareTripleChecker+Valid, 10932 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:15:25,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6625 Valid, 10932 Invalid, 2284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 20:15:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34569 states. [2022-11-16 20:15:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34569 to 9624. [2022-11-16 20:15:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9624 states, 9621 states have (on average 1.3638914873713752) internal successors, (13122), 9623 states have internal predecessors, (13122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:15:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9624 states to 9624 states and 13122 transitions. [2022-11-16 20:15:36,176 INFO L78 Accepts]: Start accepts. Automaton has 9624 states and 13122 transitions. Word has length 73 [2022-11-16 20:15:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:15:36,177 INFO L495 AbstractCegarLoop]: Abstraction has 9624 states and 13122 transitions. [2022-11-16 20:15:36,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:15:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 9624 states and 13122 transitions. [2022-11-16 20:15:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 20:15:36,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:15:36,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:15:36,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 20:15:36,180 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:15:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:15:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1557339149, now seen corresponding path program 1 times [2022-11-16 20:15:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:15:36,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218616377] [2022-11-16 20:15:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:15:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:15:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:15:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:36,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:15:36,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218616377] [2022-11-16 20:15:36,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218616377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:15:36,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:15:36,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 20:15:36,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65285250] [2022-11-16 20:15:36,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:15:36,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:15:36,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:15:36,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:15:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:15:36,802 INFO L87 Difference]: Start difference. First operand 9624 states and 13122 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:15:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:15:57,713 INFO L93 Difference]: Finished difference Result 17199 states and 23315 transitions. [2022-11-16 20:15:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:15:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-16 20:15:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:15:57,735 INFO L225 Difference]: With dead ends: 17199 [2022-11-16 20:15:57,735 INFO L226 Difference]: Without dead ends: 16633 [2022-11-16 20:15:57,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:15:57,739 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 4895 mSDsluCounter, 5194 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 6328 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:15:57,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4895 Valid, 6328 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 20:15:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16633 states. [2022-11-16 20:16:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16633 to 9620. [2022-11-16 20:16:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9620 states, 9618 states have (on average 1.3637970472031606) internal successors, (13117), 9619 states have internal predecessors, (13117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9620 states to 9620 states and 13117 transitions. [2022-11-16 20:16:07,370 INFO L78 Accepts]: Start accepts. Automaton has 9620 states and 13117 transitions. Word has length 73 [2022-11-16 20:16:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:16:07,370 INFO L495 AbstractCegarLoop]: Abstraction has 9620 states and 13117 transitions. [2022-11-16 20:16:07,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9620 states and 13117 transitions. [2022-11-16 20:16:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 20:16:07,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:16:07,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:16:07,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 20:16:07,373 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:16:07,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:16:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash 770378501, now seen corresponding path program 1 times [2022-11-16 20:16:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:16:07,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968696119] [2022-11-16 20:16:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:16:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:16:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:16:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:07,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:16:07,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968696119] [2022-11-16 20:16:07,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968696119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:16:07,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:16:07,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 20:16:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235978125] [2022-11-16 20:16:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:16:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 20:16:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:16:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 20:16:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 20:16:07,826 INFO L87 Difference]: Start difference. First operand 9620 states and 13117 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:16:29,084 INFO L93 Difference]: Finished difference Result 17226 states and 23343 transitions. [2022-11-16 20:16:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 20:16:29,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-16 20:16:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:16:29,106 INFO L225 Difference]: With dead ends: 17226 [2022-11-16 20:16:29,106 INFO L226 Difference]: Without dead ends: 16629 [2022-11-16 20:16:29,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-16 20:16:29,110 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 4945 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4945 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:16:29,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4945 Valid, 3644 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 20:16:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16629 states. [2022-11-16 20:16:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16629 to 9585. [2022-11-16 20:16:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 9584 states have (on average 1.3642529215358932) internal successors, (13075), 9584 states have internal predecessors, (13075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 13075 transitions. [2022-11-16 20:16:39,921 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 13075 transitions. Word has length 73 [2022-11-16 20:16:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:16:39,922 INFO L495 AbstractCegarLoop]: Abstraction has 9585 states and 13075 transitions. [2022-11-16 20:16:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 13075 transitions. [2022-11-16 20:16:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 20:16:39,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:16:39,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:16:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 20:16:39,926 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:16:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:16:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash -397158000, now seen corresponding path program 1 times [2022-11-16 20:16:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:16:39,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682344186] [2022-11-16 20:16:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:16:39,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:16:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:16:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:16:40,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:16:40,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682344186] [2022-11-16 20:16:40,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682344186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:16:40,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:16:40,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:16:40,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493244796] [2022-11-16 20:16:40,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:16:40,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:16:40,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:16:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:16:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:16:40,064 INFO L87 Difference]: Start difference. First operand 9585 states and 13075 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:16:55,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:16:55,095 INFO L93 Difference]: Finished difference Result 22633 states and 31293 transitions. [2022-11-16 20:16:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:16:55,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-16 20:16:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:16:55,116 INFO L225 Difference]: With dead ends: 22633 [2022-11-16 20:16:55,116 INFO L226 Difference]: Without dead ends: 14183 [2022-11-16 20:16:55,123 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 [2022-11-16 20:16:55,124 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 623 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:16:55,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1374 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:16:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14183 states. [2022-11-16 20:17:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14183 to 13163. [2022-11-16 20:17:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.361951071265765) internal successors, (17926), 13162 states have internal predecessors, (17926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 17926 transitions. [2022-11-16 20:17:09,030 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 17926 transitions. Word has length 73 [2022-11-16 20:17:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:17:09,031 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 17926 transitions. [2022-11-16 20:17:09,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 17926 transitions. [2022-11-16 20:17:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 20:17:09,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:17:09,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:17:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 20:17:09,033 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:17:09,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:17:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash 491799337, now seen corresponding path program 1 times [2022-11-16 20:17:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:17:09,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582975775] [2022-11-16 20:17:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:17:09,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:17:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:17:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:09,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:17:09,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582975775] [2022-11-16 20:17:09,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582975775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:17:09,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:17:09,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:17:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802302700] [2022-11-16 20:17:09,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:17:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:17:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:17:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:17:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:17:09,157 INFO L87 Difference]: Start difference. First operand 13163 states and 17926 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:17:23,213 INFO L93 Difference]: Finished difference Result 24435 states and 33470 transitions. [2022-11-16 20:17:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:17:23,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-16 20:17:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:17:23,229 INFO L225 Difference]: With dead ends: 24435 [2022-11-16 20:17:23,229 INFO L226 Difference]: Without dead ends: 12439 [2022-11-16 20:17:23,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:17:23,239 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2467 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:17:23,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 1399 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:17:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2022-11-16 20:17:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12433. [2022-11-16 20:17:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12433 states, 12432 states have (on average 1.3564189189189189) internal successors, (16863), 12432 states have internal predecessors, (16863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12433 states to 12433 states and 16863 transitions. [2022-11-16 20:17:37,412 INFO L78 Accepts]: Start accepts. Automaton has 12433 states and 16863 transitions. Word has length 73 [2022-11-16 20:17:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:17:37,412 INFO L495 AbstractCegarLoop]: Abstraction has 12433 states and 16863 transitions. [2022-11-16 20:17:37,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12433 states and 16863 transitions. [2022-11-16 20:17:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 20:17:37,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:17:37,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:17:37,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 20:17:37,415 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:17:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:17:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash 438553479, now seen corresponding path program 1 times [2022-11-16 20:17:37,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:17:37,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556800016] [2022-11-16 20:17:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:17:37,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:17:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:17:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:37,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:17:37,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556800016] [2022-11-16 20:17:37,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556800016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:17:37,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:17:37,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:17:37,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939755357] [2022-11-16 20:17:37,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:17:37,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:17:37,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:17:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:17:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:17:37,539 INFO L87 Difference]: Start difference. First operand 12433 states and 16863 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:17:58,538 INFO L93 Difference]: Finished difference Result 29660 states and 40659 transitions. [2022-11-16 20:17:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:17:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-16 20:17:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:17:58,564 INFO L225 Difference]: With dead ends: 29660 [2022-11-16 20:17:58,565 INFO L226 Difference]: Without dead ends: 18758 [2022-11-16 20:17:58,573 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 [2022-11-16 20:17:58,574 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 529 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:17:58,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1398 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:17:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18758 states. [2022-11-16 20:18:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18758 to 17324. [2022-11-16 20:18:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17324 states, 17323 states have (on average 1.351324828263003) internal successors, (23409), 17323 states have internal predecessors, (23409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17324 states to 17324 states and 23409 transitions. [2022-11-16 20:18:18,142 INFO L78 Accepts]: Start accepts. Automaton has 17324 states and 23409 transitions. Word has length 75 [2022-11-16 20:18:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:18:18,143 INFO L495 AbstractCegarLoop]: Abstraction has 17324 states and 23409 transitions. [2022-11-16 20:18:18,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 17324 states and 23409 transitions. [2022-11-16 20:18:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 20:18:18,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:18:18,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:18:18,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 20:18:18,145 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:18:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:18:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1140941538, now seen corresponding path program 1 times [2022-11-16 20:18:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:18:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370946862] [2022-11-16 20:18:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:18:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:18,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:18:18,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370946862] [2022-11-16 20:18:18,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370946862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:18:18,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:18:18,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:18:18,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100301313] [2022-11-16 20:18:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:18:18,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:18:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:18:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:18:18,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:18:18,235 INFO L87 Difference]: Start difference. First operand 17324 states and 23409 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:46,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:18:46,027 INFO L93 Difference]: Finished difference Result 41600 states and 56726 transitions. [2022-11-16 20:18:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:18:46,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-16 20:18:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:18:46,065 INFO L225 Difference]: With dead ends: 41600 [2022-11-16 20:18:46,065 INFO L226 Difference]: Without dead ends: 26214 [2022-11-16 20:18:46,077 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 [2022-11-16 20:18:46,078 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 420 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:18:46,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1464 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:18:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26214 states. [2022-11-16 20:19:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26214 to 24134. [2022-11-16 20:19:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24134 states, 24133 states have (on average 1.3438445282393403) internal successors, (32431), 24133 states have internal predecessors, (32431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24134 states to 24134 states and 32431 transitions. [2022-11-16 20:19:11,852 INFO L78 Accepts]: Start accepts. Automaton has 24134 states and 32431 transitions. Word has length 78 [2022-11-16 20:19:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:11,852 INFO L495 AbstractCegarLoop]: Abstraction has 24134 states and 32431 transitions. [2022-11-16 20:19:11,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 24134 states and 32431 transitions. [2022-11-16 20:19:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 20:19:11,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:11,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:19:11,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 20:19:11,855 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-11-16 20:19:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1875624208, now seen corresponding path program 1 times [2022-11-16 20:19:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:11,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495852051] [2022-11-16 20:19:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:12,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495852051] [2022-11-16 20:19:12,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495852051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:19:12,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:19:12,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 20:19:12,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323559067] [2022-11-16 20:19:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:19:12,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 20:19:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 20:19:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 20:19:12,136 INFO L87 Difference]: Start difference. First operand 24134 states and 32431 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)