./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9 --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 1bc6aa00437fa9caa5f3417d996588d430ef5fa0daab57def01c3e44b34b1cac --- 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-6b4ec56 [2022-11-20 18:59:42,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:59:42,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:59:42,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:59:42,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:59:42,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:59:42,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:59:42,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:59:42,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:59:42,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:59:42,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:59:42,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:59:42,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:59:42,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:59:42,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:59:42,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:59:42,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:59:42,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:59:42,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:59:42,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:59:42,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:59:42,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:59:42,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:59:42,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:59:42,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:59:42,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:59:42,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:59:42,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:59:42,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:59:42,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:59:42,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:59:42,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:59:42,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:59:42,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:59:42,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:59:42,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:59:42,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:59:42,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:59:42,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:59:42,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:59:42,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:59:42,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 18:59:42,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:59:42,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:59:42,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:59:42,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:59:42,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:59:42,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:59:42,315 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:59:42,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:59:42,315 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:59:42,315 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 18:59:42,316 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:59:42,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:59:42,316 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 18:59:42,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 18:59:42,316 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:59:42,317 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 18:59:42,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 18:59:42,317 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 18:59:42,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:59:42,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 18:59:42,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:59:42,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 18:59:42,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:59:42,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:59:42,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:59:42,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:59:42,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 18:59:42,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:59:42,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:59:42,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:59:42,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:59:42,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:59:42,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:59:42,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:59:42,321 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 18:59:42,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:59:42,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:59:42,322 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 18:59:42,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:59:42,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:59:42,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:59:42,323 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_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bc6aa00437fa9caa5f3417d996588d430ef5fa0daab57def01c3e44b34b1cac [2022-11-20 18:59:42,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:59:42,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:59:42,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:59:42,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:59:42,673 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:59:42,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-20 18:59:45,721 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:59:46,044 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:59:46,044 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-20 18:59:46,068 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/data/bdfa58798/6a9cd713cab64bf6a9a1eba55f0de1bb/FLAG84756fdf5 [2022-11-20 18:59:46,088 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/data/bdfa58798/6a9cd713cab64bf6a9a1eba55f0de1bb [2022-11-20 18:59:46,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:59:46,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:59:46,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:59:46,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:59:46,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:59:46,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:46" (1/1) ... [2022-11-20 18:59:46,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b3feea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46, skipping insertion in model container [2022-11-20 18:59:46,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:46" (1/1) ... [2022-11-20 18:59:46,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:59:46,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:59:46,605 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2022-11-20 18:59:46,624 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2022-11-20 18:59:46,655 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2022-11-20 18:59:46,671 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2022-11-20 18:59:46,746 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2022-11-20 18:59:46,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:59:46,833 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:59:46,935 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2022-11-20 18:59:46,942 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2022-11-20 18:59:46,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2022-11-20 18:59:46,964 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2022-11-20 18:59:47,015 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2022-11-20 18:59:47,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:59:47,105 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:59:47,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47 WrapperNode [2022-11-20 18:59:47,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:59:47,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:59:47,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:59:47,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:59:47,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,224 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1558 [2022-11-20 18:59:47,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:59:47,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:59:47,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:59:47,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:59:47,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,289 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:59:47,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:59:47,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:59:47,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:59:47,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (1/1) ... [2022-11-20 18:59:47,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:59:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:59:47,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:59:47,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98635694-27c8-47bf-a7cc-9a0d82d31f50/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:59:47,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 18:59:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 18:59:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:59:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:59:47,623 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:59:47,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:59:48,956 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:59:49,374 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:59:49,374 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 18:59:49,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:49 BoogieIcfgContainer [2022-11-20 18:59:49,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:59:49,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:59:49,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:59:49,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:59:49,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:59:46" (1/3) ... [2022-11-20 18:59:49,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b595989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:49, skipping insertion in model container [2022-11-20 18:59:49,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:47" (2/3) ... [2022-11-20 18:59:49,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b595989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:49, skipping insertion in model container [2022-11-20 18:59:49,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:49" (3/3) ... [2022-11-20 18:59:49,402 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-20 18:59:49,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:59:49,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-20 18:59:49,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:59:49,483 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;@47ff0a10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:59:49,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 18:59:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 280 states have (on average 1.7964285714285715) internal successors, (503), 285 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 18:59:49,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:59:49,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:59:49,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 18:59:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:59:49,509 INFO L85 PathProgramCache]: Analyzing trace with hash 693386370, now seen corresponding path program 1 times [2022-11-20 18:59:49,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:59:49,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227903780] [2022-11-20 18:59:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:49,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:59:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:51,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:59:51,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227903780] [2022-11-20 18:59:51,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227903780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:59:51,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:59:51,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 18:59:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428243666] [2022-11-20 18:59:51,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:59:51,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:59:51,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:59:51,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:59:51,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:51,141 INFO L87 Difference]: Start difference. First operand has 286 states, 280 states have (on average 1.7964285714285715) internal successors, (503), 285 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:59:51,642 INFO L93 Difference]: Finished difference Result 794 states and 1367 transitions. [2022-11-20 18:59:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 18:59:51,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-11-20 18:59:51,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:59:51,669 INFO L225 Difference]: With dead ends: 794 [2022-11-20 18:59:51,670 INFO L226 Difference]: Without dead ends: 602 [2022-11-20 18:59:51,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:51,677 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 1236 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 18:59:51,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1220 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 18:59:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-20 18:59:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 561. [2022-11-20 18:59:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 556 states have (on average 1.3758992805755397) internal successors, (765), 560 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 765 transitions. [2022-11-20 18:59:51,798 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 765 transitions. Word has length 114 [2022-11-20 18:59:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:59:51,799 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 765 transitions. [2022-11-20 18:59:51,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 765 transitions. [2022-11-20 18:59:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 18:59:51,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:59:51,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:59:51,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 18:59:51,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 18:59:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:59:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1420466989, now seen corresponding path program 1 times [2022-11-20 18:59:51,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:59:51,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571875178] [2022-11-20 18:59:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:51,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:59:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:52,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:59:52,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571875178] [2022-11-20 18:59:52,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571875178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:59:52,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:59:52,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 18:59:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830376991] [2022-11-20 18:59:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:59:52,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:59:52,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:59:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:59:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:52,601 INFO L87 Difference]: Start difference. First operand 561 states and 765 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:59:52,883 INFO L93 Difference]: Finished difference Result 1531 states and 2097 transitions. [2022-11-20 18:59:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 18:59:52,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-11-20 18:59:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:59:52,887 INFO L225 Difference]: With dead ends: 1531 [2022-11-20 18:59:52,888 INFO L226 Difference]: Without dead ends: 1043 [2022-11-20 18:59:52,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:52,892 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 952 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:59:52,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 650 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:59:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-20 18:59:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1019. [2022-11-20 18:59:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1014 states have (on average 1.378698224852071) internal successors, (1398), 1018 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1398 transitions. [2022-11-20 18:59:53,011 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1398 transitions. Word has length 114 [2022-11-20 18:59:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:59:53,012 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1398 transitions. [2022-11-20 18:59:53,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1398 transitions. [2022-11-20 18:59:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 18:59:53,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:59:53,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:59:53,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 18:59:53,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 18:59:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:59:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 80230183, now seen corresponding path program 1 times [2022-11-20 18:59:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:59:53,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548633149] [2022-11-20 18:59:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:59:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:53,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:59:53,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548633149] [2022-11-20 18:59:53,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548633149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:59:53,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:59:53,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 18:59:53,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852009851] [2022-11-20 18:59:53,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:59:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:59:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:59:53,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:59:53,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:53,963 INFO L87 Difference]: Start difference. First operand 1019 states and 1398 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:59:54,291 INFO L93 Difference]: Finished difference Result 1977 states and 2746 transitions. [2022-11-20 18:59:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 18:59:54,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-11-20 18:59:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:59:54,296 INFO L225 Difference]: With dead ends: 1977 [2022-11-20 18:59:54,296 INFO L226 Difference]: Without dead ends: 1227 [2022-11-20 18:59:54,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:54,299 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1590 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:59:54,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 650 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:59:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-11-20 18:59:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1206. [2022-11-20 18:59:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1201 states have (on average 1.3905079100749376) internal successors, (1670), 1205 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1670 transitions. [2022-11-20 18:59:54,516 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1670 transitions. Word has length 120 [2022-11-20 18:59:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:59:54,518 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1670 transitions. [2022-11-20 18:59:54,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1670 transitions. [2022-11-20 18:59:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 18:59:54,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:59:54,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:59:54,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 18:59:54,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 18:59:54,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:59:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1732764127, now seen corresponding path program 1 times [2022-11-20 18:59:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:59:54,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094894839] [2022-11-20 18:59:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:59:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:55,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:59:55,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094894839] [2022-11-20 18:59:55,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094894839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:59:55,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:59:55,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 18:59:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573991302] [2022-11-20 18:59:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:59:55,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 18:59:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:59:55,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 18:59:55,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 18:59:55,520 INFO L87 Difference]: Start difference. First operand 1206 states and 1670 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:59:56,697 INFO L93 Difference]: Finished difference Result 3102 states and 4346 transitions. [2022-11-20 18:59:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 18:59:56,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-11-20 18:59:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:59:56,706 INFO L225 Difference]: With dead ends: 3102 [2022-11-20 18:59:56,706 INFO L226 Difference]: Without dead ends: 2011 [2022-11-20 18:59:56,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-11-20 18:59:56,716 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1379 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 18:59:56,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 1130 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 18:59:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-11-20 18:59:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1747. [2022-11-20 18:59:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1742 states have (on average 1.3639494833524684) internal successors, (2376), 1746 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2376 transitions. [2022-11-20 18:59:57,024 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2376 transitions. Word has length 126 [2022-11-20 18:59:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:59:57,026 INFO L495 AbstractCegarLoop]: Abstraction has 1747 states and 2376 transitions. [2022-11-20 18:59:57,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:57,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2376 transitions. [2022-11-20 18:59:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 18:59:57,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:59:57,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:59:57,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 18:59:57,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 18:59:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:59:57,031 INFO L85 PathProgramCache]: Analyzing trace with hash -194520636, now seen corresponding path program 1 times [2022-11-20 18:59:57,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:59:57,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869692033] [2022-11-20 18:59:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:57,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:59:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:57,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:59:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869692033] [2022-11-20 18:59:57,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869692033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:59:57,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:59:57,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 18:59:57,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701427934] [2022-11-20 18:59:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:59:57,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:59:57,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:59:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:59:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:57,952 INFO L87 Difference]: Start difference. First operand 1747 states and 2376 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:59:58,371 INFO L93 Difference]: Finished difference Result 2221 states and 2998 transitions. [2022-11-20 18:59:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 18:59:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-11-20 18:59:58,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:59:58,383 INFO L225 Difference]: With dead ends: 2221 [2022-11-20 18:59:58,383 INFO L226 Difference]: Without dead ends: 1699 [2022-11-20 18:59:58,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:58,385 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 635 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:59:58,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 647 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:59:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-11-20 18:59:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1580. [2022-11-20 18:59:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1575 states have (on average 1.3346031746031746) internal successors, (2102), 1579 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2102 transitions. [2022-11-20 18:59:58,816 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2102 transitions. Word has length 126 [2022-11-20 18:59:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:59:58,816 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2102 transitions. [2022-11-20 18:59:58,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:59:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2102 transitions. [2022-11-20 18:59:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 18:59:58,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:59:58,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:59:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 18:59:58,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 18:59:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:59:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1070952514, now seen corresponding path program 1 times [2022-11-20 18:59:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:59:58,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637708673] [2022-11-20 18:59:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:59:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:59,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:59:59,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637708673] [2022-11-20 18:59:59,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637708673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:59:59,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:59:59,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 18:59:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834069735] [2022-11-20 18:59:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:59:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:59:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:59:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:59:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:59:59,542 INFO L87 Difference]: Start difference. First operand 1580 states and 2102 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:00,344 INFO L93 Difference]: Finished difference Result 4451 states and 5942 transitions. [2022-11-20 19:00:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:00:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-11-20 19:00:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:00,354 INFO L225 Difference]: With dead ends: 4451 [2022-11-20 19:00:00,355 INFO L226 Difference]: Without dead ends: 2997 [2022-11-20 19:00:00,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:00:00,360 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 920 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:00,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 721 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:00:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2022-11-20 19:00:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2976. [2022-11-20 19:00:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2971 states have (on average 1.3332211376640861) internal successors, (3961), 2975 states have internal predecessors, (3961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 3961 transitions. [2022-11-20 19:00:01,073 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 3961 transitions. Word has length 126 [2022-11-20 19:00:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:01,073 INFO L495 AbstractCegarLoop]: Abstraction has 2976 states and 3961 transitions. [2022-11-20 19:00:01,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 3961 transitions. [2022-11-20 19:00:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:00:01,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:01,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:00:01,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 19:00:01,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:00:01,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -901940206, now seen corresponding path program 1 times [2022-11-20 19:00:01,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:01,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761891175] [2022-11-20 19:00:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:01,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:00:01,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:01,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761891175] [2022-11-20 19:00:01,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761891175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:00:01,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:00:01,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:00:01,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169159308] [2022-11-20 19:00:01,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:00:01,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:00:01,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:00:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:00:01,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:00:01,193 INFO L87 Difference]: Start difference. First operand 2976 states and 3961 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:02,444 INFO L93 Difference]: Finished difference Result 5517 states and 7361 transitions. [2022-11-20 19:00:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:00:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:00:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:02,459 INFO L225 Difference]: With dead ends: 5517 [2022-11-20 19:00:02,459 INFO L226 Difference]: Without dead ends: 4378 [2022-11-20 19:00:02,462 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 [2022-11-20 19:00:02,463 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 249 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:02,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 691 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:00:02,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2022-11-20 19:00:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 4357. [2022-11-20 19:00:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4357 states, 4352 states have (on average 1.3207720588235294) internal successors, (5748), 4356 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 5748 transitions. [2022-11-20 19:00:03,360 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 5748 transitions. Word has length 132 [2022-11-20 19:00:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:03,360 INFO L495 AbstractCegarLoop]: Abstraction has 4357 states and 5748 transitions. [2022-11-20 19:00:03,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 5748 transitions. [2022-11-20 19:00:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:00:03,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:03,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:00:03,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 19:00:03,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:00:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash -335447201, now seen corresponding path program 1 times [2022-11-20 19:00:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:03,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744678796] [2022-11-20 19:00:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:00:03,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:03,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744678796] [2022-11-20 19:00:03,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744678796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:00:03,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:00:03,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:00:03,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572453346] [2022-11-20 19:00:03,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:00:03,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:00:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:00:03,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:00:03,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:00:03,855 INFO L87 Difference]: Start difference. First operand 4357 states and 5748 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:05,802 INFO L93 Difference]: Finished difference Result 10373 states and 13785 transitions. [2022-11-20 19:00:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:00:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:00:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:05,824 INFO L225 Difference]: With dead ends: 10373 [2022-11-20 19:00:05,825 INFO L226 Difference]: Without dead ends: 6360 [2022-11-20 19:00:05,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:00:05,832 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 2229 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:05,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 613 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:00:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2022-11-20 19:00:06,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 4589. [2022-11-20 19:00:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4589 states, 4584 states have (on average 1.2443280977312392) internal successors, (5704), 4588 states have internal predecessors, (5704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4589 states to 4589 states and 5704 transitions. [2022-11-20 19:00:06,652 INFO L78 Accepts]: Start accepts. Automaton has 4589 states and 5704 transitions. Word has length 132 [2022-11-20 19:00:06,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:06,653 INFO L495 AbstractCegarLoop]: Abstraction has 4589 states and 5704 transitions. [2022-11-20 19:00:06,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4589 states and 5704 transitions. [2022-11-20 19:00:06,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:00:06,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:06,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:00:06,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 19:00:06,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:00:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:06,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1652902394, now seen corresponding path program 1 times [2022-11-20 19:00:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:06,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971679943] [2022-11-20 19:00:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:06,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:00:15,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:15,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971679943] [2022-11-20 19:00:15,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971679943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:00:15,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:00:15,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-20 19:00:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154544533] [2022-11-20 19:00:15,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:00:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 19:00:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:00:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 19:00:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2022-11-20 19:00:15,329 INFO L87 Difference]: Start difference. First operand 4589 states and 5704 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:22,872 INFO L93 Difference]: Finished difference Result 6463 states and 8310 transitions. [2022-11-20 19:00:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 19:00:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:00:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:22,917 INFO L225 Difference]: With dead ends: 6463 [2022-11-20 19:00:22,918 INFO L226 Difference]: Without dead ends: 6053 [2022-11-20 19:00:22,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=366, Invalid=2084, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 19:00:22,925 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 875 mSDsluCounter, 4939 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 5260 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:22,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 5260 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 19:00:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2022-11-20 19:00:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 4702. [2022-11-20 19:00:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4702 states, 4697 states have (on average 1.2410048967426017) internal successors, (5829), 4701 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 5829 transitions. [2022-11-20 19:00:23,915 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 5829 transitions. Word has length 132 [2022-11-20 19:00:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:23,916 INFO L495 AbstractCegarLoop]: Abstraction has 4702 states and 5829 transitions. [2022-11-20 19:00:23,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 5829 transitions. [2022-11-20 19:00:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:00:23,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:23,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:00:23,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 19:00:23,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:00:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash -460950965, now seen corresponding path program 1 times [2022-11-20 19:00:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:23,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531338009] [2022-11-20 19:00:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:00:34,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:34,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531338009] [2022-11-20 19:00:34,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531338009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:00:34,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:00:34,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-20 19:00:34,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20721871] [2022-11-20 19:00:34,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:00:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 19:00:34,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:00:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 19:00:34,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:00:34,271 INFO L87 Difference]: Start difference. First operand 4702 states and 5829 transitions. Second operand has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:51,793 INFO L93 Difference]: Finished difference Result 6999 states and 9015 transitions. [2022-11-20 19:00:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 19:00:51,794 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:00:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:51,810 INFO L225 Difference]: With dead ends: 6999 [2022-11-20 19:00:51,811 INFO L226 Difference]: Without dead ends: 6717 [2022-11-20 19:00:51,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=744, Invalid=4806, Unknown=0, NotChecked=0, Total=5550 [2022-11-20 19:00:51,816 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 2288 mSDsluCounter, 8411 mSDsCounter, 0 mSdLazyCounter, 4504 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 4630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 4504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:51,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 8889 Invalid, 4630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 4504 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 19:00:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-11-20 19:00:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 5049. [2022-11-20 19:00:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5049 states, 5044 states have (on average 1.23949246629659) internal successors, (6252), 5048 states have internal predecessors, (6252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 6252 transitions. [2022-11-20 19:00:52,742 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 6252 transitions. Word has length 132 [2022-11-20 19:00:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:52,742 INFO L495 AbstractCegarLoop]: Abstraction has 5049 states and 6252 transitions. [2022-11-20 19:00:52,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 6252 transitions. [2022-11-20 19:00:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:00:52,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:52,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:00:52,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 19:00:52,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:00:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash 183447265, now seen corresponding path program 1 times [2022-11-20 19:00:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:52,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270239800] [2022-11-20 19:00:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:01:03,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:01:03,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270239800] [2022-11-20 19:01:03,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270239800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:01:03,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:01:03,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-20 19:01:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251727314] [2022-11-20 19:01:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:01:03,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 19:01:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:01:03,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 19:01:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 19:01:03,735 INFO L87 Difference]: Start difference. First operand 5049 states and 6252 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:01:13,071 INFO L93 Difference]: Finished difference Result 6640 states and 8511 transitions. [2022-11-20 19:01:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 19:01:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:01:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:01:13,088 INFO L225 Difference]: With dead ends: 6640 [2022-11-20 19:01:13,089 INFO L226 Difference]: Without dead ends: 6632 [2022-11-20 19:01:13,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=536, Invalid=2770, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 19:01:13,093 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1179 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:01:13,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 4627 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 19:01:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6632 states. [2022-11-20 19:01:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 5184. [2022-11-20 19:01:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 5179 states have (on average 1.2357597991890326) internal successors, (6400), 5183 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 6400 transitions. [2022-11-20 19:01:14,320 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 6400 transitions. Word has length 132 [2022-11-20 19:01:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:01:14,320 INFO L495 AbstractCegarLoop]: Abstraction has 5184 states and 6400 transitions. [2022-11-20 19:01:14,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 6400 transitions. [2022-11-20 19:01:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:01:14,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:14,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:01:14,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 19:01:14,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:01:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:14,330 INFO L85 PathProgramCache]: Analyzing trace with hash -394012459, now seen corresponding path program 1 times [2022-11-20 19:01:14,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:01:14,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313885915] [2022-11-20 19:01:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:14,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:01:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:01:14,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:01:14,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313885915] [2022-11-20 19:01:14,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313885915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:01:14,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:01:14,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:01:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066382002] [2022-11-20 19:01:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:01:14,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:01:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:01:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:01:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:01:14,808 INFO L87 Difference]: Start difference. First operand 5184 states and 6400 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:01:16,469 INFO L93 Difference]: Finished difference Result 10044 states and 12431 transitions. [2022-11-20 19:01:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:01:16,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:01:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:01:16,481 INFO L225 Difference]: With dead ends: 10044 [2022-11-20 19:01:16,481 INFO L226 Difference]: Without dead ends: 5226 [2022-11-20 19:01:16,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:01:16,488 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2139 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:01:16,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2139 Valid, 760 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:01:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2022-11-20 19:01:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4973. [2022-11-20 19:01:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4973 states, 4968 states have (on average 1.2143719806763285) internal successors, (6033), 4972 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4973 states to 4973 states and 6033 transitions. [2022-11-20 19:01:17,502 INFO L78 Accepts]: Start accepts. Automaton has 4973 states and 6033 transitions. Word has length 132 [2022-11-20 19:01:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:01:17,502 INFO L495 AbstractCegarLoop]: Abstraction has 4973 states and 6033 transitions. [2022-11-20 19:01:17,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4973 states and 6033 transitions. [2022-11-20 19:01:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:01:17,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:17,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:01:17,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 19:01:17,510 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:01:17,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:17,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1845818348, now seen corresponding path program 1 times [2022-11-20 19:01:17,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:01:17,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733979977] [2022-11-20 19:01:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:17,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:01:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:01:20,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:01:20,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733979977] [2022-11-20 19:01:20,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733979977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:01:20,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:01:20,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 19:01:20,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553972810] [2022-11-20 19:01:20,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:01:20,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 19:01:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:01:20,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 19:01:20,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:01:20,335 INFO L87 Difference]: Start difference. First operand 4973 states and 6033 transitions. Second operand has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:01:27,747 INFO L93 Difference]: Finished difference Result 11069 states and 14511 transitions. [2022-11-20 19:01:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 19:01:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:01:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:01:27,768 INFO L225 Difference]: With dead ends: 11069 [2022-11-20 19:01:27,769 INFO L226 Difference]: Without dead ends: 9818 [2022-11-20 19:01:27,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=300, Invalid=1260, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 19:01:27,773 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 2090 mSDsluCounter, 8044 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 8737 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:01:27,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 8737 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 19:01:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2022-11-20 19:01:29,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 5525. [2022-11-20 19:01:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 5520 states have (on average 1.2143115942028986) internal successors, (6703), 5524 states have internal predecessors, (6703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 6703 transitions. [2022-11-20 19:01:29,097 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 6703 transitions. Word has length 132 [2022-11-20 19:01:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:01:29,097 INFO L495 AbstractCegarLoop]: Abstraction has 5525 states and 6703 transitions. [2022-11-20 19:01:29,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 6703 transitions. [2022-11-20 19:01:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:01:29,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:29,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:01:29,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 19:01:29,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:01:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash -268035011, now seen corresponding path program 1 times [2022-11-20 19:01:29,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:01:29,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288922566] [2022-11-20 19:01:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:01:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:01:29,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:01:29,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288922566] [2022-11-20 19:01:29,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288922566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:01:29,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:01:29,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:01:29,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469188009] [2022-11-20 19:01:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:01:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:01:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:01:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:01:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:01:29,647 INFO L87 Difference]: Start difference. First operand 5525 states and 6703 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:01:30,721 INFO L93 Difference]: Finished difference Result 6803 states and 8321 transitions. [2022-11-20 19:01:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:01:30,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:01:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:01:30,727 INFO L225 Difference]: With dead ends: 6803 [2022-11-20 19:01:30,727 INFO L226 Difference]: Without dead ends: 4457 [2022-11-20 19:01:30,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:01:30,732 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 951 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:01:30,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 826 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:01:30,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-11-20 19:01:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 4426. [2022-11-20 19:01:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 4421 states have (on average 1.2110382266455553) internal successors, (5354), 4425 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 5354 transitions. [2022-11-20 19:01:31,708 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 5354 transitions. Word has length 132 [2022-11-20 19:01:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:01:31,709 INFO L495 AbstractCegarLoop]: Abstraction has 4426 states and 5354 transitions. [2022-11-20 19:01:31,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 5354 transitions. [2022-11-20 19:01:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:01:31,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:31,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:01:31,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 19:01:31,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:01:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:31,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1021357656, now seen corresponding path program 1 times [2022-11-20 19:01:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:01:31,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732051350] [2022-11-20 19:01:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:31,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:01:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:01:32,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:01:32,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732051350] [2022-11-20 19:01:32,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732051350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:01:32,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:01:32,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:01:32,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139266142] [2022-11-20 19:01:32,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:01:32,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:01:32,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:01:32,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:01:32,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:01:32,375 INFO L87 Difference]: Start difference. First operand 4426 states and 5354 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:01:33,511 INFO L93 Difference]: Finished difference Result 5326 states and 6501 transitions. [2022-11-20 19:01:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:01:33,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:01:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:01:33,517 INFO L225 Difference]: With dead ends: 5326 [2022-11-20 19:01:33,517 INFO L226 Difference]: Without dead ends: 4132 [2022-11-20 19:01:33,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:01:33,520 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1066 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:01:33,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 687 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:01:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2022-11-20 19:01:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 3905. [2022-11-20 19:01:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3900 states have (on average 1.207948717948718) internal successors, (4711), 3904 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 4711 transitions. [2022-11-20 19:01:34,670 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 4711 transitions. Word has length 132 [2022-11-20 19:01:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:01:34,670 INFO L495 AbstractCegarLoop]: Abstraction has 3905 states and 4711 transitions. [2022-11-20 19:01:34,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 4711 transitions. [2022-11-20 19:01:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:01:34,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:34,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:01:34,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 19:01:34,677 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:01:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1796484446, now seen corresponding path program 1 times [2022-11-20 19:01:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:01:34,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765179239] [2022-11-20 19:01:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:34,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:01:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:01:45,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:01:45,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765179239] [2022-11-20 19:01:45,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765179239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:01:45,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:01:45,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-20 19:01:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977142778] [2022-11-20 19:01:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:01:45,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 19:01:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:01:45,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 19:01:45,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2022-11-20 19:01:45,254 INFO L87 Difference]: Start difference. First operand 3905 states and 4711 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:01:58,223 INFO L93 Difference]: Finished difference Result 5819 states and 7254 transitions. [2022-11-20 19:01:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 19:01:58,224 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:01:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:01:58,229 INFO L225 Difference]: With dead ends: 5819 [2022-11-20 19:01:58,230 INFO L226 Difference]: Without dead ends: 5536 [2022-11-20 19:01:58,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=519, Invalid=2561, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 19:01:58,232 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1121 mSDsluCounter, 8957 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 19:01:58,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 9441 Invalid, 3238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 19:01:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2022-11-20 19:01:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 4216. [2022-11-20 19:01:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4216 states, 4211 states have (on average 1.2101638565661363) internal successors, (5096), 4215 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4216 states to 4216 states and 5096 transitions. [2022-11-20 19:01:59,284 INFO L78 Accepts]: Start accepts. Automaton has 4216 states and 5096 transitions. Word has length 132 [2022-11-20 19:01:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:01:59,285 INFO L495 AbstractCegarLoop]: Abstraction has 4216 states and 5096 transitions. [2022-11-20 19:01:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:01:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4216 states and 5096 transitions. [2022-11-20 19:01:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:01:59,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:59,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:01:59,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 19:01:59,290 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:01:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash -317368913, now seen corresponding path program 1 times [2022-11-20 19:01:59,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:01:59,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033440030] [2022-11-20 19:01:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:59,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:01:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:09,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:09,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033440030] [2022-11-20 19:02:09,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033440030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:09,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:09,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-20 19:02:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808164154] [2022-11-20 19:02:09,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:09,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 19:02:09,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 19:02:09,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 19:02:09,711 INFO L87 Difference]: Start difference. First operand 4216 states and 5096 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:27,507 INFO L93 Difference]: Finished difference Result 6507 states and 8198 transitions. [2022-11-20 19:02:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 19:02:27,507 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:02:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:27,515 INFO L225 Difference]: With dead ends: 6507 [2022-11-20 19:02:27,515 INFO L226 Difference]: Without dead ends: 6188 [2022-11-20 19:02:27,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=706, Invalid=4124, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 19:02:27,519 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 2669 mSDsluCounter, 9889 mSDsCounter, 0 mSdLazyCounter, 4250 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 10479 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:27,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2669 Valid, 10479 Invalid, 4351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [101 Valid, 4250 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 19:02:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6188 states. [2022-11-20 19:02:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6188 to 4603. [2022-11-20 19:02:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4598 states have (on average 1.2122662026968247) internal successors, (5574), 4602 states have internal predecessors, (5574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 5574 transitions. [2022-11-20 19:02:28,541 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 5574 transitions. Word has length 132 [2022-11-20 19:02:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:28,541 INFO L495 AbstractCegarLoop]: Abstraction has 4603 states and 5574 transitions. [2022-11-20 19:02:28,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 5574 transitions. [2022-11-20 19:02:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 19:02:28,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:28,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:28,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 19:02:28,546 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:02:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 327029317, now seen corresponding path program 1 times [2022-11-20 19:02:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:28,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573871586] [2022-11-20 19:02:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:34,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:34,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573871586] [2022-11-20 19:02:34,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573871586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:34,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:34,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-20 19:02:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93411819] [2022-11-20 19:02:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 19:02:34,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:34,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 19:02:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2022-11-20 19:02:34,596 INFO L87 Difference]: Start difference. First operand 4603 states and 5574 transitions. Second operand has 29 states, 29 states have (on average 4.551724137931035) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:44,842 INFO L93 Difference]: Finished difference Result 8166 states and 10528 transitions. [2022-11-20 19:02:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 19:02:44,843 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.551724137931035) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-20 19:02:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:44,851 INFO L225 Difference]: With dead ends: 8166 [2022-11-20 19:02:44,851 INFO L226 Difference]: Without dead ends: 8032 [2022-11-20 19:02:44,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=434, Invalid=2218, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 19:02:44,853 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1978 mSDsluCounter, 8901 mSDsCounter, 0 mSdLazyCounter, 3285 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 9523 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:44,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 9523 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3285 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 19:02:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8032 states. [2022-11-20 19:02:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8032 to 4955. [2022-11-20 19:02:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4955 states, 4950 states have (on average 1.2056565656565656) internal successors, (5968), 4954 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4955 states to 4955 states and 5968 transitions. [2022-11-20 19:02:46,078 INFO L78 Accepts]: Start accepts. Automaton has 4955 states and 5968 transitions. Word has length 132 [2022-11-20 19:02:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 4955 states and 5968 transitions. [2022-11-20 19:02:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.551724137931035) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4955 states and 5968 transitions. [2022-11-20 19:02:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 19:02:46,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:46,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:46,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 19:02:46,082 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:02:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:46,083 INFO L85 PathProgramCache]: Analyzing trace with hash -617758842, now seen corresponding path program 1 times [2022-11-20 19:02:46,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:46,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543678464] [2022-11-20 19:02:46,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:46,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:46,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:46,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543678464] [2022-11-20 19:02:46,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543678464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:46,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:46,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:02:46,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11817531] [2022-11-20 19:02:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:46,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:02:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:02:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:02:46,150 INFO L87 Difference]: Start difference. First operand 4955 states and 5968 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:47,891 INFO L93 Difference]: Finished difference Result 7752 states and 9425 transitions. [2022-11-20 19:02:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:02:47,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-20 19:02:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:47,896 INFO L225 Difference]: With dead ends: 7752 [2022-11-20 19:02:47,896 INFO L226 Difference]: Without dead ends: 5162 [2022-11-20 19:02:47,897 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 [2022-11-20 19:02:47,898 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 287 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:47,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 407 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:02:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2022-11-20 19:02:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 4858. [2022-11-20 19:02:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4853 states have (on average 1.2019369462188336) internal successors, (5833), 4857 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 5833 transitions. [2022-11-20 19:02:49,154 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 5833 transitions. Word has length 133 [2022-11-20 19:02:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:49,154 INFO L495 AbstractCegarLoop]: Abstraction has 4858 states and 5833 transitions. [2022-11-20 19:02:49,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 5833 transitions. [2022-11-20 19:02:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 19:02:49,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:49,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:49,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 19:02:49,161 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:02:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:49,161 INFO L85 PathProgramCache]: Analyzing trace with hash 529612928, now seen corresponding path program 1 times [2022-11-20 19:02:49,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:49,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995584223] [2022-11-20 19:02:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:49,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:49,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:49,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995584223] [2022-11-20 19:02:49,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995584223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:49,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:49,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:02:49,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948922575] [2022-11-20 19:02:49,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:49,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:02:49,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:02:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:02:49,261 INFO L87 Difference]: Start difference. First operand 4858 states and 5833 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:50,958 INFO L93 Difference]: Finished difference Result 7708 states and 9300 transitions. [2022-11-20 19:02:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:02:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-20 19:02:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:50,964 INFO L225 Difference]: With dead ends: 7708 [2022-11-20 19:02:50,964 INFO L226 Difference]: Without dead ends: 4865 [2022-11-20 19:02:50,967 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 [2022-11-20 19:02:50,968 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 260 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:50,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 355 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:02:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2022-11-20 19:02:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4691. [2022-11-20 19:02:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4686 states have (on average 1.199530516431925) internal successors, (5621), 4690 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 5621 transitions. [2022-11-20 19:02:52,177 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 5621 transitions. Word has length 133 [2022-11-20 19:02:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:52,177 INFO L495 AbstractCegarLoop]: Abstraction has 4691 states and 5621 transitions. [2022-11-20 19:02:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 5621 transitions. [2022-11-20 19:02:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 19:02:52,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:52,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:52,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 19:02:52,180 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:02:52,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2110404196, now seen corresponding path program 1 times [2022-11-20 19:02:52,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:52,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75644779] [2022-11-20 19:02:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:52,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:52,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:52,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75644779] [2022-11-20 19:02:52,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75644779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:52,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:52,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:02:52,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048883579] [2022-11-20 19:02:52,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:52,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:02:52,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:02:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:02:52,234 INFO L87 Difference]: Start difference. First operand 4691 states and 5621 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:53,620 INFO L93 Difference]: Finished difference Result 7221 states and 8663 transitions. [2022-11-20 19:02:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:02:53,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-20 19:02:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:53,626 INFO L225 Difference]: With dead ends: 7221 [2022-11-20 19:02:53,626 INFO L226 Difference]: Without dead ends: 4547 [2022-11-20 19:02:53,630 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 [2022-11-20 19:02:53,631 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 250 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:53,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 282 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:02:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2022-11-20 19:02:54,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 4519. [2022-11-20 19:02:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 4514 states have (on average 1.195170580416482) internal successors, (5395), 4518 states have internal predecessors, (5395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 5395 transitions. [2022-11-20 19:02:54,790 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 5395 transitions. Word has length 133 [2022-11-20 19:02:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:54,790 INFO L495 AbstractCegarLoop]: Abstraction has 4519 states and 5395 transitions. [2022-11-20 19:02:54,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 5395 transitions. [2022-11-20 19:02:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 19:02:54,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:54,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:54,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 19:02:54,796 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:02:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1660807784, now seen corresponding path program 1 times [2022-11-20 19:02:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932855392] [2022-11-20 19:02:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:54,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:54,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:54,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932855392] [2022-11-20 19:02:54,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932855392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:54,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:54,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:02:54,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138302656] [2022-11-20 19:02:54,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:54,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:02:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:54,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:02:54,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:02:54,867 INFO L87 Difference]: Start difference. First operand 4519 states and 5395 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:56,468 INFO L93 Difference]: Finished difference Result 7532 states and 9068 transitions. [2022-11-20 19:02:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:02:56,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-20 19:02:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:56,477 INFO L225 Difference]: With dead ends: 7532 [2022-11-20 19:02:56,477 INFO L226 Difference]: Without dead ends: 4342 [2022-11-20 19:02:56,480 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 [2022-11-20 19:02:56,481 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 263 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:56,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 316 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:02:56,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2022-11-20 19:02:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 4126. [2022-11-20 19:02:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4121 states have (on average 1.1926716816306722) internal successors, (4915), 4125 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 4915 transitions. [2022-11-20 19:02:57,554 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 4915 transitions. Word has length 133 [2022-11-20 19:02:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:57,555 INFO L495 AbstractCegarLoop]: Abstraction has 4126 states and 4915 transitions. [2022-11-20 19:02:57,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 4915 transitions. [2022-11-20 19:02:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 19:02:57,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:57,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:57,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 19:02:57,558 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:02:57,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2099135496, now seen corresponding path program 1 times [2022-11-20 19:02:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:57,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889295043] [2022-11-20 19:02:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:57,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:57,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889295043] [2022-11-20 19:02:57,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889295043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:57,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:57,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:02:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314181863] [2022-11-20 19:02:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:57,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:02:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:02:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:02:57,633 INFO L87 Difference]: Start difference. First operand 4126 states and 4915 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:59,004 INFO L93 Difference]: Finished difference Result 6740 states and 8068 transitions. [2022-11-20 19:02:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:02:59,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-20 19:02:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:59,009 INFO L225 Difference]: With dead ends: 6740 [2022-11-20 19:02:59,009 INFO L226 Difference]: Without dead ends: 3918 [2022-11-20 19:02:59,012 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 [2022-11-20 19:02:59,012 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 247 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:59,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 283 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:02:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2022-11-20 19:03:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3886. [2022-11-20 19:03:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3881 states have (on average 1.1808812161813966) internal successors, (4583), 3885 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 4583 transitions. [2022-11-20 19:03:00,089 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 4583 transitions. Word has length 133 [2022-11-20 19:03:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:03:00,089 INFO L495 AbstractCegarLoop]: Abstraction has 3886 states and 4583 transitions. [2022-11-20 19:03:00,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 4583 transitions. [2022-11-20 19:03:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 19:03:00,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:03:00,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:03:00,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 19:03:00,095 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:03:00,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:03:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1176183790, now seen corresponding path program 1 times [2022-11-20 19:03:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:03:00,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442359740] [2022-11-20 19:03:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:03:00,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:03:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:03:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:03:00,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:03:00,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442359740] [2022-11-20 19:03:00,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442359740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:03:00,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:03:00,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:03:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512948373] [2022-11-20 19:03:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:03:00,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:03:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:03:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:03:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:03:00,202 INFO L87 Difference]: Start difference. First operand 3886 states and 4583 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:03:01,874 INFO L93 Difference]: Finished difference Result 7248 states and 8642 transitions. [2022-11-20 19:03:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:03:01,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-20 19:03:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:03:01,879 INFO L225 Difference]: With dead ends: 7248 [2022-11-20 19:03:01,879 INFO L226 Difference]: Without dead ends: 3769 [2022-11-20 19:03:01,882 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 [2022-11-20 19:03:01,883 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 244 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:03:01,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 345 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:03:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2022-11-20 19:03:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3463. [2022-11-20 19:03:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3458 states have (on average 1.1781376518218623) internal successors, (4074), 3462 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 4074 transitions. [2022-11-20 19:03:02,842 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 4074 transitions. Word has length 133 [2022-11-20 19:03:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:03:02,842 INFO L495 AbstractCegarLoop]: Abstraction has 3463 states and 4074 transitions. [2022-11-20 19:03:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 4074 transitions. [2022-11-20 19:03:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 19:03:02,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:03:02,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:03:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 19:03:02,847 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:03:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:03:02,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1655977380, now seen corresponding path program 1 times [2022-11-20 19:03:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:03:02,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193515220] [2022-11-20 19:03:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:03:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:03:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:03:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:03:02,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:03:02,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193515220] [2022-11-20 19:03:02,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193515220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:03:02,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:03:02,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:03:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783276681] [2022-11-20 19:03:02,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:03:02,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:03:02,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:03:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:03:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:03:02,941 INFO L87 Difference]: Start difference. First operand 3463 states and 4074 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:03:03,917 INFO L93 Difference]: Finished difference Result 4142 states and 4890 transitions. [2022-11-20 19:03:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:03:03,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-11-20 19:03:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:03:03,923 INFO L225 Difference]: With dead ends: 4142 [2022-11-20 19:03:03,923 INFO L226 Difference]: Without dead ends: 3436 [2022-11-20 19:03:03,924 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 [2022-11-20 19:03:03,925 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 217 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:03:03,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 780 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:03:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2022-11-20 19:03:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3415. [2022-11-20 19:03:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3410 states have (on average 1.1741935483870967) internal successors, (4004), 3414 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4004 transitions. [2022-11-20 19:03:04,884 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4004 transitions. Word has length 135 [2022-11-20 19:03:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:03:04,885 INFO L495 AbstractCegarLoop]: Abstraction has 3415 states and 4004 transitions. [2022-11-20 19:03:04,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4004 transitions. [2022-11-20 19:03:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:03:04,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:03:04,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:03:04,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 19:03:04,888 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:03:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:03:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash 67165632, now seen corresponding path program 1 times [2022-11-20 19:03:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:03:04,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460729262] [2022-11-20 19:03:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:03:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:03:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:03:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:03:09,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:03:09,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460729262] [2022-11-20 19:03:09,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460729262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:03:09,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:03:09,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 19:03:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991993211] [2022-11-20 19:03:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:03:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 19:03:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:03:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 19:03:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-11-20 19:03:09,246 INFO L87 Difference]: Start difference. First operand 3415 states and 4004 transitions. Second operand has 23 states, 23 states have (on average 6.0) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:03:14,904 INFO L93 Difference]: Finished difference Result 5141 states and 6316 transitions. [2022-11-20 19:03:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 19:03:14,904 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.0) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:03:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:03:14,909 INFO L225 Difference]: With dead ends: 5141 [2022-11-20 19:03:14,909 INFO L226 Difference]: Without dead ends: 4727 [2022-11-20 19:03:14,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 19:03:14,911 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1989 mSDsluCounter, 5659 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 6241 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:03:14,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 6241 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 19:03:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-11-20 19:03:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 3418. [2022-11-20 19:03:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1714034573688836) internal successors, (3998), 3417 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3998 transitions. [2022-11-20 19:03:16,055 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3998 transitions. Word has length 138 [2022-11-20 19:03:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:03:16,055 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3998 transitions. [2022-11-20 19:03:16,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.0) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3998 transitions. [2022-11-20 19:03:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:03:16,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:03:16,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:03:16,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 19:03:16,058 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:03:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:03:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2046687727, now seen corresponding path program 1 times [2022-11-20 19:03:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:03:16,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355894058] [2022-11-20 19:03:16,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:03:16,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:03:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:03:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:03:26,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:03:26,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355894058] [2022-11-20 19:03:26,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355894058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:03:26,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:03:26,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-20 19:03:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708409414] [2022-11-20 19:03:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:03:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 19:03:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:03:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 19:03:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 19:03:26,915 INFO L87 Difference]: Start difference. First operand 3418 states and 3998 transitions. Second operand has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:03:40,793 INFO L93 Difference]: Finished difference Result 4302 states and 5231 transitions. [2022-11-20 19:03:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 19:03:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:03:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:03:40,798 INFO L225 Difference]: With dead ends: 4302 [2022-11-20 19:03:40,798 INFO L226 Difference]: Without dead ends: 4295 [2022-11-20 19:03:40,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=546, Invalid=2760, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 19:03:40,800 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 929 mSDsluCounter, 5323 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 19:03:40,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 5679 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 19:03:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2022-11-20 19:03:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 3418. [2022-11-20 19:03:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.17111046000586) internal successors, (3997), 3417 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3997 transitions. [2022-11-20 19:03:41,595 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3997 transitions. Word has length 138 [2022-11-20 19:03:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:03:41,596 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3997 transitions. [2022-11-20 19:03:41,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:03:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3997 transitions. [2022-11-20 19:03:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:03:41,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:03:41,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:03:41,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 19:03:41,598 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:03:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:03:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1402289497, now seen corresponding path program 1 times [2022-11-20 19:03:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:03:41,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213711569] [2022-11-20 19:03:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:03:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:03:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:03:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:03:50,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:03:50,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213711569] [2022-11-20 19:03:50,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213711569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:03:50,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:03:50,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 19:03:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117567485] [2022-11-20 19:03:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:03:50,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 19:03:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:03:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 19:03:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:03:50,871 INFO L87 Difference]: Start difference. First operand 3418 states and 3997 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:04:03,752 INFO L93 Difference]: Finished difference Result 4216 states and 5109 transitions. [2022-11-20 19:04:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 19:04:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:04:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:04:03,757 INFO L225 Difference]: With dead ends: 4216 [2022-11-20 19:04:03,757 INFO L226 Difference]: Without dead ends: 4212 [2022-11-20 19:04:03,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=531, Invalid=2891, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 19:04:03,759 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 810 mSDsluCounter, 6605 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 6949 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:04:03,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 6949 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 19:04:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2022-11-20 19:04:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3418. [2022-11-20 19:04:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1708174626428363) internal successors, (3996), 3417 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3996 transitions. [2022-11-20 19:04:04,619 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3996 transitions. Word has length 138 [2022-11-20 19:04:04,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:04:04,619 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3996 transitions. [2022-11-20 19:04:04,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:04,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3996 transitions. [2022-11-20 19:04:04,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:04:04,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:04:04,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:04:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 19:04:04,622 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:04:04,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:04:04,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1833495294, now seen corresponding path program 1 times [2022-11-20 19:04:04,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:04:04,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145543216] [2022-11-20 19:04:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:04:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:04:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:04:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:04:13,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:04:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145543216] [2022-11-20 19:04:13,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145543216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:04:13,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:04:13,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-20 19:04:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747184344] [2022-11-20 19:04:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:04:13,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 19:04:13,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:04:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 19:04:13,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:04:13,127 INFO L87 Difference]: Start difference. First operand 3418 states and 3996 transitions. Second operand has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:04:25,331 INFO L93 Difference]: Finished difference Result 4366 states and 5304 transitions. [2022-11-20 19:04:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 19:04:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:04:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:04:25,336 INFO L225 Difference]: With dead ends: 4366 [2022-11-20 19:04:25,336 INFO L226 Difference]: Without dead ends: 4358 [2022-11-20 19:04:25,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=583, Invalid=2839, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 19:04:25,339 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1631 mSDsluCounter, 7025 mSDsCounter, 0 mSdLazyCounter, 3298 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 7540 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:04:25,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 7540 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3298 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 19:04:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2022-11-20 19:04:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 3418. [2022-11-20 19:04:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1705244652798126) internal successors, (3995), 3417 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3995 transitions. [2022-11-20 19:04:26,197 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3995 transitions. Word has length 138 [2022-11-20 19:04:26,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:04:26,197 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3995 transitions. [2022-11-20 19:04:26,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3995 transitions. [2022-11-20 19:04:26,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:04:26,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:04:26,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:04:26,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 19:04:26,199 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:04:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:04:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash 347618643, now seen corresponding path program 1 times [2022-11-20 19:04:26,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:04:26,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549950543] [2022-11-20 19:04:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:04:26,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:04:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:04:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:04:34,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:04:34,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549950543] [2022-11-20 19:04:34,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549950543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:04:34,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:04:34,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-20 19:04:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018130718] [2022-11-20 19:04:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:04:34,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 19:04:34,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:04:34,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 19:04:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:04:34,200 INFO L87 Difference]: Start difference. First operand 3418 states and 3995 transitions. Second operand has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:04:46,019 INFO L93 Difference]: Finished difference Result 3470 states and 4062 transitions. [2022-11-20 19:04:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 19:04:46,019 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:04:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:04:46,022 INFO L225 Difference]: With dead ends: 3470 [2022-11-20 19:04:46,022 INFO L226 Difference]: Without dead ends: 3463 [2022-11-20 19:04:46,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=525, Invalid=2897, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 19:04:46,025 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1707 mSDsluCounter, 6350 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:04:46,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 6769 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 19:04:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2022-11-20 19:04:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3418. [2022-11-20 19:04:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1702314679167887) internal successors, (3994), 3417 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3994 transitions. [2022-11-20 19:04:46,916 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3994 transitions. Word has length 138 [2022-11-20 19:04:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:04:46,916 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3994 transitions. [2022-11-20 19:04:46,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:04:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3994 transitions. [2022-11-20 19:04:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:04:46,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:04:46,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:04:46,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 19:04:46,920 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:04:46,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:04:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 992016873, now seen corresponding path program 1 times [2022-11-20 19:04:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:04:46,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701950586] [2022-11-20 19:04:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:04:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:04:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:04:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:04:56,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:04:56,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701950586] [2022-11-20 19:04:56,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701950586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:04:56,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:04:56,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-11-20 19:04:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937116474] [2022-11-20 19:04:56,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:04:56,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 19:04:56,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:04:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 19:04:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1384, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 19:04:56,458 INFO L87 Difference]: Start difference. First operand 3418 states and 3994 transitions. Second operand has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:05:07,026 INFO L93 Difference]: Finished difference Result 4216 states and 5106 transitions. [2022-11-20 19:05:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 19:05:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:05:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:05:07,030 INFO L225 Difference]: With dead ends: 4216 [2022-11-20 19:05:07,030 INFO L226 Difference]: Without dead ends: 4212 [2022-11-20 19:05:07,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=678, Invalid=3612, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 19:05:07,033 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 679 mSDsluCounter, 5110 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 5454 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:05:07,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 5454 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 19:05:07,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2022-11-20 19:05:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3418. [2022-11-20 19:05:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.169938470553765) internal successors, (3993), 3417 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3993 transitions. [2022-11-20 19:05:07,920 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3993 transitions. Word has length 138 [2022-11-20 19:05:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:05:07,920 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3993 transitions. [2022-11-20 19:05:07,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3993 transitions. [2022-11-20 19:05:07,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:05:07,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:05:07,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:05:07,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 19:05:07,924 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:05:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:05:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash 47671936, now seen corresponding path program 1 times [2022-11-20 19:05:07,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:05:07,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400693014] [2022-11-20 19:05:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:05:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:05:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:05:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:05:10,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:05:10,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400693014] [2022-11-20 19:05:10,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400693014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:05:10,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:05:10,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-20 19:05:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770724541] [2022-11-20 19:05:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:05:10,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 19:05:10,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:05:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 19:05:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:05:10,811 INFO L87 Difference]: Start difference. First operand 3418 states and 3993 transitions. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:05:15,491 INFO L93 Difference]: Finished difference Result 4849 states and 5869 transitions. [2022-11-20 19:05:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 19:05:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:05:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:05:15,496 INFO L225 Difference]: With dead ends: 4849 [2022-11-20 19:05:15,496 INFO L226 Difference]: Without dead ends: 4423 [2022-11-20 19:05:15,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 19:05:15,498 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1435 mSDsluCounter, 5595 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 6080 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 19:05:15,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 6080 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 19:05:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-11-20 19:05:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 3418. [2022-11-20 19:05:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1673014942865514) internal successors, (3984), 3417 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3984 transitions. [2022-11-20 19:05:16,449 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3984 transitions. Word has length 138 [2022-11-20 19:05:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:05:16,449 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3984 transitions. [2022-11-20 19:05:16,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3984 transitions. [2022-11-20 19:05:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:05:16,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:05:16,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:05:16,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 19:05:16,453 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:05:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:05:16,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2066181423, now seen corresponding path program 1 times [2022-11-20 19:05:16,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:05:16,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733024658] [2022-11-20 19:05:16,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:05:16,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:05:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:05:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:05:27,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:05:27,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733024658] [2022-11-20 19:05:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733024658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:05:27,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:05:27,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-20 19:05:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371083486] [2022-11-20 19:05:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:05:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 19:05:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:05:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 19:05:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 19:05:27,665 INFO L87 Difference]: Start difference. First operand 3418 states and 3984 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:05:42,845 INFO L93 Difference]: Finished difference Result 3470 states and 4051 transitions. [2022-11-20 19:05:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 19:05:42,846 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:05:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:05:42,850 INFO L225 Difference]: With dead ends: 3470 [2022-11-20 19:05:42,850 INFO L226 Difference]: Without dead ends: 3463 [2022-11-20 19:05:42,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=552, Invalid=2870, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 19:05:42,851 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 917 mSDsluCounter, 5617 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:05:42,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 6016 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 19:05:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2022-11-20 19:05:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3418. [2022-11-20 19:05:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1670084969235277) internal successors, (3983), 3417 states have internal predecessors, (3983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3983 transitions. [2022-11-20 19:05:43,830 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3983 transitions. Word has length 138 [2022-11-20 19:05:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:05:43,830 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3983 transitions. [2022-11-20 19:05:43,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3983 transitions. [2022-11-20 19:05:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:05:43,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:05:43,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:05:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 19:05:43,833 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:05:43,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:05:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1421783193, now seen corresponding path program 1 times [2022-11-20 19:05:43,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:05:43,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379175410] [2022-11-20 19:05:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:05:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:05:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:05:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:05:47,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:05:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379175410] [2022-11-20 19:05:47,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379175410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:05:47,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:05:47,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 19:05:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012333946] [2022-11-20 19:05:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:05:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 19:05:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:05:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 19:05:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:05:47,013 INFO L87 Difference]: Start difference. First operand 3418 states and 3983 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:05:52,418 INFO L93 Difference]: Finished difference Result 4553 states and 5529 transitions. [2022-11-20 19:05:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 19:05:52,418 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:05:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:05:52,422 INFO L225 Difference]: With dead ends: 4553 [2022-11-20 19:05:52,422 INFO L226 Difference]: Without dead ends: 4545 [2022-11-20 19:05:52,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 19:05:52,423 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1213 mSDsluCounter, 7049 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 7635 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:05:52,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 7635 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 19:05:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-11-20 19:05:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 3418. [2022-11-20 19:05:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1664225021974801) internal successors, (3981), 3417 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3981 transitions. [2022-11-20 19:05:53,455 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3981 transitions. Word has length 138 [2022-11-20 19:05:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:05:53,455 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 3981 transitions. [2022-11-20 19:05:53,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:05:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3981 transitions. [2022-11-20 19:05:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:05:53,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:05:53,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:05:53,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 19:05:53,458 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:05:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:05:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 186825986, now seen corresponding path program 1 times [2022-11-20 19:05:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:05:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343266191] [2022-11-20 19:05:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:05:53,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:05:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:06:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:06:00,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:06:00,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343266191] [2022-11-20 19:06:00,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343266191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:06:00,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:06:00,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-20 19:06:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426443237] [2022-11-20 19:06:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:06:00,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 19:06:00,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:06:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 19:06:00,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 19:06:00,034 INFO L87 Difference]: Start difference. First operand 3418 states and 3981 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:06:12,120 INFO L93 Difference]: Finished difference Result 4448 states and 5381 transitions. [2022-11-20 19:06:12,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 19:06:12,121 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:06:12,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:06:12,125 INFO L225 Difference]: With dead ends: 4448 [2022-11-20 19:06:12,125 INFO L226 Difference]: Without dead ends: 4307 [2022-11-20 19:06:12,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=649, Invalid=3907, Unknown=0, NotChecked=0, Total=4556 [2022-11-20 19:06:12,127 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 995 mSDsluCounter, 7909 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:06:12,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 8363 Invalid, 3963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3935 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 19:06:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2022-11-20 19:06:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 3461. [2022-11-20 19:06:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3461 states, 3456 states have (on average 1.1686921296296295) internal successors, (4039), 3460 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 4039 transitions. [2022-11-20 19:06:13,129 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 4039 transitions. Word has length 138 [2022-11-20 19:06:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:06:13,130 INFO L495 AbstractCegarLoop]: Abstraction has 3461 states and 4039 transitions. [2022-11-20 19:06:13,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 4039 transitions. [2022-11-20 19:06:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:06:13,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:06:13,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:06:13,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 19:06:13,133 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:06:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:06:13,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1927027373, now seen corresponding path program 1 times [2022-11-20 19:06:13,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:06:13,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008416311] [2022-11-20 19:06:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:06:13,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:06:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:06:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:06:17,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:06:17,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008416311] [2022-11-20 19:06:17,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008416311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:06:17,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:06:17,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-20 19:06:17,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103330421] [2022-11-20 19:06:17,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:06:17,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 19:06:17,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:06:17,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 19:06:17,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-20 19:06:17,661 INFO L87 Difference]: Start difference. First operand 3461 states and 4039 transitions. Second operand has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:06:28,717 INFO L93 Difference]: Finished difference Result 5631 states and 6971 transitions. [2022-11-20 19:06:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 19:06:28,717 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:06:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:06:28,722 INFO L225 Difference]: With dead ends: 5631 [2022-11-20 19:06:28,722 INFO L226 Difference]: Without dead ends: 5617 [2022-11-20 19:06:28,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=347, Invalid=2103, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 19:06:28,723 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1516 mSDsluCounter, 7168 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 7733 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 19:06:28,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 7733 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 19:06:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5617 states. [2022-11-20 19:06:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5617 to 3505. [2022-11-20 19:06:29,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3500 states have (on average 1.1662857142857144) internal successors, (4082), 3504 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4082 transitions. [2022-11-20 19:06:29,824 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4082 transitions. Word has length 138 [2022-11-20 19:06:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:06:29,824 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4082 transitions. [2022-11-20 19:06:29,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4082 transitions. [2022-11-20 19:06:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:06:29,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:06:29,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:06:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 19:06:29,826 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:06:29,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:06:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1282629143, now seen corresponding path program 1 times [2022-11-20 19:06:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:06:29,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247066404] [2022-11-20 19:06:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:06:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:06:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:06:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:06:38,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:06:38,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247066404] [2022-11-20 19:06:38,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247066404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:06:38,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:06:38,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 19:06:38,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794791682] [2022-11-20 19:06:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:06:38,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 19:06:38,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:06:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 19:06:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1246, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:06:38,189 INFO L87 Difference]: Start difference. First operand 3505 states and 4082 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:06:53,556 INFO L93 Difference]: Finished difference Result 4346 states and 5251 transitions. [2022-11-20 19:06:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 19:06:53,556 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:06:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:06:53,561 INFO L225 Difference]: With dead ends: 4346 [2022-11-20 19:06:53,561 INFO L226 Difference]: Without dead ends: 4342 [2022-11-20 19:06:53,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=564, Invalid=3596, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 19:06:53,562 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 931 mSDsluCounter, 8965 mSDsCounter, 0 mSdLazyCounter, 4466 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 9348 SdHoareTripleChecker+Invalid, 4477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 19:06:53,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 9348 Invalid, 4477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4466 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-20 19:06:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2022-11-20 19:06:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 3505. [2022-11-20 19:06:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3500 states have (on average 1.166) internal successors, (4081), 3504 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4081 transitions. [2022-11-20 19:06:54,674 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4081 transitions. Word has length 138 [2022-11-20 19:06:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:06:54,674 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4081 transitions. [2022-11-20 19:06:54,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:06:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4081 transitions. [2022-11-20 19:06:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:06:54,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:06:54,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:06:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 19:06:54,678 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:06:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:06:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash 764278850, now seen corresponding path program 1 times [2022-11-20 19:06:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:06:54,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144882204] [2022-11-20 19:06:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:06:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:06:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:07:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:07:05,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:07:05,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144882204] [2022-11-20 19:07:05,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144882204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:07:05,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:07:05,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-11-20 19:07:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536711707] [2022-11-20 19:07:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:07:05,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 19:07:05,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:07:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 19:07:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 19:07:05,216 INFO L87 Difference]: Start difference. First operand 3505 states and 4081 transitions. Second operand has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:07:22,125 INFO L93 Difference]: Finished difference Result 4353 states and 5257 transitions. [2022-11-20 19:07:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 19:07:22,125 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:07:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:07:22,129 INFO L225 Difference]: With dead ends: 4353 [2022-11-20 19:07:22,129 INFO L226 Difference]: Without dead ends: 4345 [2022-11-20 19:07:22,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=612, Invalid=3678, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 19:07:22,130 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 884 mSDsluCounter, 6665 mSDsCounter, 0 mSdLazyCounter, 3568 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 7040 SdHoareTripleChecker+Invalid, 3585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:07:22,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 7040 Invalid, 3585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3568 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 19:07:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2022-11-20 19:07:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 3505. [2022-11-20 19:07:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3500 states have (on average 1.1657142857142857) internal successors, (4080), 3504 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4080 transitions. [2022-11-20 19:07:23,323 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4080 transitions. Word has length 138 [2022-11-20 19:07:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:07:23,323 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4080 transitions. [2022-11-20 19:07:23,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4080 transitions. [2022-11-20 19:07:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:07:23,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:07:23,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:07:23,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 19:07:23,327 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:07:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:07:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1349574509, now seen corresponding path program 1 times [2022-11-20 19:07:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:07:23,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331311634] [2022-11-20 19:07:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:07:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:07:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:07:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:07:27,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:07:27,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331311634] [2022-11-20 19:07:27,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331311634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:07:27,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:07:27,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-20 19:07:27,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155101597] [2022-11-20 19:07:27,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:07:27,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 19:07:27,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:07:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 19:07:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:07:27,623 INFO L87 Difference]: Start difference. First operand 3505 states and 4080 transitions. Second operand has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:07:34,659 INFO L93 Difference]: Finished difference Result 4451 states and 5385 transitions. [2022-11-20 19:07:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 19:07:34,661 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:07:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:07:34,665 INFO L225 Difference]: With dead ends: 4451 [2022-11-20 19:07:34,665 INFO L226 Difference]: Without dead ends: 4437 [2022-11-20 19:07:34,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=283, Invalid=1879, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 19:07:34,667 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 806 mSDsluCounter, 6303 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 6846 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:07:34,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 6846 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 19:07:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2022-11-20 19:07:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 3505. [2022-11-20 19:07:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3500 states have (on average 1.1648571428571428) internal successors, (4077), 3504 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4077 transitions. [2022-11-20 19:07:35,832 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4077 transitions. Word has length 138 [2022-11-20 19:07:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:07:35,832 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4077 transitions. [2022-11-20 19:07:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4077 transitions. [2022-11-20 19:07:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:07:35,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:07:35,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:07:35,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-20 19:07:35,834 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:07:35,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:07:35,835 INFO L85 PathProgramCache]: Analyzing trace with hash -705176279, now seen corresponding path program 1 times [2022-11-20 19:07:35,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:07:35,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551951608] [2022-11-20 19:07:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:07:35,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:07:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:07:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:07:39,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:07:39,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551951608] [2022-11-20 19:07:39,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551951608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:07:39,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:07:39,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-20 19:07:39,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989211752] [2022-11-20 19:07:39,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:07:39,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 19:07:39,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:07:39,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 19:07:39,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:07:39,173 INFO L87 Difference]: Start difference. First operand 3505 states and 4077 transitions. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:07:45,020 INFO L93 Difference]: Finished difference Result 4555 states and 5506 transitions. [2022-11-20 19:07:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 19:07:45,021 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:07:45,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:07:45,024 INFO L225 Difference]: With dead ends: 4555 [2022-11-20 19:07:45,024 INFO L226 Difference]: Without dead ends: 4547 [2022-11-20 19:07:45,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 19:07:45,025 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1366 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:07:45,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 6016 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 19:07:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2022-11-20 19:07:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 3505. [2022-11-20 19:07:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3500 states have (on average 1.164) internal successors, (4074), 3504 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4074 transitions. [2022-11-20 19:07:46,220 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4074 transitions. Word has length 138 [2022-11-20 19:07:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:07:46,220 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4074 transitions. [2022-11-20 19:07:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:07:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4074 transitions. [2022-11-20 19:07:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:07:46,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:07:46,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:07:46,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-20 19:07:46,223 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:07:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:07:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1649521216, now seen corresponding path program 1 times [2022-11-20 19:07:46,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:07:46,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277008240] [2022-11-20 19:07:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:07:46,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:07:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:07:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:07:53,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:07:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277008240] [2022-11-20 19:07:53,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277008240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:07:53,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:07:53,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-20 19:07:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027907557] [2022-11-20 19:07:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:07:53,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 19:07:53,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:07:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 19:07:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 19:07:53,775 INFO L87 Difference]: Start difference. First operand 3505 states and 4074 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:08:06,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:08:06,059 INFO L93 Difference]: Finished difference Result 4493 states and 5416 transitions. [2022-11-20 19:08:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 19:08:06,059 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:08:06,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:08:06,063 INFO L225 Difference]: With dead ends: 4493 [2022-11-20 19:08:06,063 INFO L226 Difference]: Without dead ends: 4345 [2022-11-20 19:08:06,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=538, Invalid=3368, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 19:08:06,064 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 752 mSDsluCounter, 6863 mSDsCounter, 0 mSdLazyCounter, 3555 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 7234 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:08:06,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 7234 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3555 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 19:08:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2022-11-20 19:08:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 3505. [2022-11-20 19:08:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3500 states have (on average 1.1634285714285715) internal successors, (4072), 3504 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:08:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4072 transitions. [2022-11-20 19:08:07,522 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4072 transitions. Word has length 138 [2022-11-20 19:08:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:08:07,523 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4072 transitions. [2022-11-20 19:08:07,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:08:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4072 transitions. [2022-11-20 19:08:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:08:07,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:08:07,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:08:07,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-20 19:08:07,525 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:08:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:08:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash 531592721, now seen corresponding path program 1 times [2022-11-20 19:08:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:08:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433750194] [2022-11-20 19:08:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:08:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:08:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:08:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:18,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:08:18,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433750194] [2022-11-20 19:08:18,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433750194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:08:18,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:08:18,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-20 19:08:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432315170] [2022-11-20 19:08:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:08:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 19:08:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:08:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 19:08:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:08:18,110 INFO L87 Difference]: Start difference. First operand 3505 states and 4072 transitions. Second operand has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:08:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:08:34,416 INFO L93 Difference]: Finished difference Result 4586 states and 5556 transitions. [2022-11-20 19:08:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 19:08:34,417 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:08:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:08:34,421 INFO L225 Difference]: With dead ends: 4586 [2022-11-20 19:08:34,422 INFO L226 Difference]: Without dead ends: 4531 [2022-11-20 19:08:34,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=561, Invalid=3729, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 19:08:34,423 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 903 mSDsluCounter, 6908 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 7356 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:08:34,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 7356 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3388 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 19:08:34,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2022-11-20 19:08:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 3519. [2022-11-20 19:08:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 3514 states have (on average 1.163915765509391) internal successors, (4090), 3518 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:08:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 4090 transitions. [2022-11-20 19:08:35,673 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 4090 transitions. Word has length 138 [2022-11-20 19:08:35,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:08:35,674 INFO L495 AbstractCegarLoop]: Abstraction has 3519 states and 4090 transitions. [2022-11-20 19:08:35,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:08:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 4090 transitions. [2022-11-20 19:08:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:08:35,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:08:35,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:08:35,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-20 19:08:35,676 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:08:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:08:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1431715541, now seen corresponding path program 1 times [2022-11-20 19:08:35,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:08:35,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997913967] [2022-11-20 19:08:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:08:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:08:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:08:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:44,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:08:44,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997913967] [2022-11-20 19:08:44,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997913967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:08:44,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:08:44,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 19:08:44,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938662111] [2022-11-20 19:08:44,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:08:44,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 19:08:44,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:08:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 19:08:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:08:44,821 INFO L87 Difference]: Start difference. First operand 3519 states and 4090 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:08:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:08:59,337 INFO L93 Difference]: Finished difference Result 4658 states and 5655 transitions. [2022-11-20 19:08:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 19:08:59,338 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:08:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:08:59,343 INFO L225 Difference]: With dead ends: 4658 [2022-11-20 19:08:59,343 INFO L226 Difference]: Without dead ends: 4532 [2022-11-20 19:08:59,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=530, Invalid=3130, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 19:08:59,345 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 1126 mSDsluCounter, 8129 mSDsCounter, 0 mSdLazyCounter, 4188 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 8643 SdHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:08:59,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 8643 Invalid, 4207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4188 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 19:08:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2022-11-20 19:09:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 3497. [2022-11-20 19:09:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 3492 states have (on average 1.1640893470790379) internal successors, (4065), 3496 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:09:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 4065 transitions. [2022-11-20 19:09:00,611 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 4065 transitions. Word has length 138 [2022-11-20 19:09:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:09:00,611 INFO L495 AbstractCegarLoop]: Abstraction has 3497 states and 4065 transitions. [2022-11-20 19:09:00,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:09:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 4065 transitions. [2022-11-20 19:09:00,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:09:00,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:09:00,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:09:00,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-20 19:09:00,614 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:09:00,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:09:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash 615192452, now seen corresponding path program 1 times [2022-11-20 19:09:00,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:09:00,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743106107] [2022-11-20 19:09:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:09:00,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:09:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:09:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:09:07,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:09:07,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743106107] [2022-11-20 19:09:07,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743106107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:09:07,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:09:07,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 19:09:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485221754] [2022-11-20 19:09:07,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:09:07,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 19:09:07,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:09:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 19:09:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:09:07,926 INFO L87 Difference]: Start difference. First operand 3497 states and 4065 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:09:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:09:26,342 INFO L93 Difference]: Finished difference Result 3814 states and 4475 transitions. [2022-11-20 19:09:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 19:09:26,342 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:09:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:09:26,346 INFO L225 Difference]: With dead ends: 3814 [2022-11-20 19:09:26,346 INFO L226 Difference]: Without dead ends: 3757 [2022-11-20 19:09:26,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=669, Invalid=3491, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 19:09:26,348 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1455 mSDsluCounter, 9103 mSDsCounter, 0 mSdLazyCounter, 4516 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 9635 SdHoareTripleChecker+Invalid, 4546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:09:26,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 9635 Invalid, 4546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4516 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 19:09:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-11-20 19:09:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3622. [2022-11-20 19:09:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3617 states have (on average 1.1680951064418026) internal successors, (4225), 3621 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:09:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 4225 transitions. [2022-11-20 19:09:27,673 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 4225 transitions. Word has length 138 [2022-11-20 19:09:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:09:27,674 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 4225 transitions. [2022-11-20 19:09:27,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:09:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 4225 transitions. [2022-11-20 19:09:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:09:27,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:09:27,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:09:27,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-20 19:09:27,677 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:09:27,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:09:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -854262677, now seen corresponding path program 1 times [2022-11-20 19:09:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:09:27,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320905932] [2022-11-20 19:09:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:09:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:09:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:09:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:09:43,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:09:43,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320905932] [2022-11-20 19:09:43,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320905932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:09:43,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:09:43,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-11-20 19:09:43,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043670891] [2022-11-20 19:09:43,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:09:43,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 19:09:43,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:09:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 19:09:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1497, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 19:09:43,361 INFO L87 Difference]: Start difference. First operand 3622 states and 4225 transitions. Second operand has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 40 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:10:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:10:02,107 INFO L93 Difference]: Finished difference Result 4606 states and 5582 transitions. [2022-11-20 19:10:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 19:10:02,108 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 40 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:10:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:10:02,111 INFO L225 Difference]: With dead ends: 4606 [2022-11-20 19:10:02,112 INFO L226 Difference]: Without dead ends: 4434 [2022-11-20 19:10:02,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=610, Invalid=3680, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 19:10:02,113 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 708 mSDsluCounter, 8301 mSDsCounter, 0 mSdLazyCounter, 4642 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 8686 SdHoareTripleChecker+Invalid, 4650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:10:02,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 8686 Invalid, 4650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 4642 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 19:10:02,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2022-11-20 19:10:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 3540. [2022-11-20 19:10:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3535 states have (on average 1.166053748231966) internal successors, (4122), 3539 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:10:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4122 transitions. [2022-11-20 19:10:03,471 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4122 transitions. Word has length 138 [2022-11-20 19:10:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:10:03,471 INFO L495 AbstractCegarLoop]: Abstraction has 3540 states and 4122 transitions. [2022-11-20 19:10:03,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 40 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:10:03,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4122 transitions. [2022-11-20 19:10:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:10:03,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:10:03,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:10:03,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-20 19:10:03,473 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:10:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:10:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1543262251, now seen corresponding path program 1 times [2022-11-20 19:10:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:10:03,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199624654] [2022-11-20 19:10:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:10:03,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:10:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:10:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:10:16,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:10:16,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199624654] [2022-11-20 19:10:16,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199624654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:10:16,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:10:16,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-20 19:10:16,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131424579] [2022-11-20 19:10:16,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:10:16,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 19:10:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:10:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 19:10:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1104, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:10:16,075 INFO L87 Difference]: Start difference. First operand 3540 states and 4122 transitions. Second operand has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:10:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:10:40,017 INFO L93 Difference]: Finished difference Result 4793 states and 5834 transitions. [2022-11-20 19:10:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 19:10:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:10:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:10:40,022 INFO L225 Difference]: With dead ends: 4793 [2022-11-20 19:10:40,022 INFO L226 Difference]: Without dead ends: 4660 [2022-11-20 19:10:40,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=623, Invalid=3537, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 19:10:40,024 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1606 mSDsluCounter, 12228 mSDsCounter, 0 mSdLazyCounter, 5830 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 12834 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:10:40,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 12834 Invalid, 5861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 5830 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-20 19:10:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2022-11-20 19:10:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 3540. [2022-11-20 19:10:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3535 states have (on average 1.1652050919377652) internal successors, (4119), 3539 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:10:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4119 transitions. [2022-11-20 19:10:41,386 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4119 transitions. Word has length 138 [2022-11-20 19:10:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:10:41,386 INFO L495 AbstractCegarLoop]: Abstraction has 3540 states and 4119 transitions. [2022-11-20 19:10:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:10:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4119 transitions. [2022-11-20 19:10:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 19:10:41,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:10:41,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:10:41,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-20 19:10:41,389 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:10:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:10:41,389 INFO L85 PathProgramCache]: Analyzing trace with hash -898864021, now seen corresponding path program 1 times [2022-11-20 19:10:41,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:10:41,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839111788] [2022-11-20 19:10:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:10:41,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:10:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:10:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:10:51,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:10:51,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839111788] [2022-11-20 19:10:51,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839111788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:10:51,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:10:51,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 19:10:51,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368908220] [2022-11-20 19:10:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:10:51,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 19:10:51,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:10:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 19:10:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1217, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:10:51,563 INFO L87 Difference]: Start difference. First operand 3540 states and 4119 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:11:06,508 INFO L93 Difference]: Finished difference Result 4438 states and 5366 transitions. [2022-11-20 19:11:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 19:11:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-20 19:11:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:11:06,512 INFO L225 Difference]: With dead ends: 4438 [2022-11-20 19:11:06,512 INFO L226 Difference]: Without dead ends: 4434 [2022-11-20 19:11:06,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=604, Invalid=3556, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 19:11:06,514 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 852 mSDsluCounter, 8188 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 8598 SdHoareTripleChecker+Invalid, 4194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:11:06,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 8598 Invalid, 4194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 19:11:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2022-11-20 19:11:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 3540. [2022-11-20 19:11:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3535 states have (on average 1.164922206506365) internal successors, (4118), 3539 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4118 transitions. [2022-11-20 19:11:07,956 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4118 transitions. Word has length 138 [2022-11-20 19:11:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:11:07,957 INFO L495 AbstractCegarLoop]: Abstraction has 3540 states and 4118 transitions. [2022-11-20 19:11:07,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4118 transitions. [2022-11-20 19:11:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 19:11:07,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:11:07,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:11:07,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-20 19:11:07,960 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:11:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:11:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1781370565, now seen corresponding path program 1 times [2022-11-20 19:11:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:11:07,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322479838] [2022-11-20 19:11:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:11:07,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:11:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:11:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:11:16,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:11:16,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322479838] [2022-11-20 19:11:16,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322479838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:11:16,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:11:16,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 19:11:16,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484104561] [2022-11-20 19:11:16,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:11:16,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 19:11:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:11:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 19:11:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:11:16,120 INFO L87 Difference]: Start difference. First operand 3540 states and 4118 transitions. Second operand has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:26,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:11:26,354 INFO L93 Difference]: Finished difference Result 4476 states and 5421 transitions. [2022-11-20 19:11:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 19:11:26,355 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-11-20 19:11:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:11:26,359 INFO L225 Difference]: With dead ends: 4476 [2022-11-20 19:11:26,359 INFO L226 Difference]: Without dead ends: 4384 [2022-11-20 19:11:26,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=571, Invalid=2969, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 19:11:26,360 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 728 mSDsluCounter, 5200 mSDsCounter, 0 mSdLazyCounter, 2923 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:11:26,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 5512 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2923 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 19:11:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-11-20 19:11:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 3533. [2022-11-20 19:11:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 3528 states have (on average 1.1649659863945578) internal successors, (4110), 3532 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4110 transitions. [2022-11-20 19:11:28,013 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4110 transitions. Word has length 139 [2022-11-20 19:11:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:11:28,013 INFO L495 AbstractCegarLoop]: Abstraction has 3533 states and 4110 transitions. [2022-11-20 19:11:28,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4110 transitions. [2022-11-20 19:11:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 19:11:28,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:11:28,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:11:28,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-20 19:11:28,015 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:11:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:11:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1337739945, now seen corresponding path program 1 times [2022-11-20 19:11:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:11:28,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045333901] [2022-11-20 19:11:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:11:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:11:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:11:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:11:36,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:11:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045333901] [2022-11-20 19:11:36,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045333901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:11:36,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:11:36,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 19:11:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046506077] [2022-11-20 19:11:36,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:11:36,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 19:11:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:11:36,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 19:11:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1095, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:11:36,999 INFO L87 Difference]: Start difference. First operand 3533 states and 4110 transitions. Second operand has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:11:48,575 INFO L93 Difference]: Finished difference Result 4509 states and 5470 transitions. [2022-11-20 19:11:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 19:11:48,576 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-11-20 19:11:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:11:48,580 INFO L225 Difference]: With dead ends: 4509 [2022-11-20 19:11:48,580 INFO L226 Difference]: Without dead ends: 4377 [2022-11-20 19:11:48,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=723, Invalid=3309, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 19:11:48,581 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 683 mSDsluCounter, 5241 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:11:48,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 5629 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2977 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 19:11:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2022-11-20 19:11:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3526. [2022-11-20 19:11:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3521 states have (on average 1.1650099403578529) internal successors, (4102), 3525 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:50,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 4102 transitions. [2022-11-20 19:11:50,006 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 4102 transitions. Word has length 139 [2022-11-20 19:11:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:11:50,006 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 4102 transitions. [2022-11-20 19:11:50,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 4102 transitions. [2022-11-20 19:11:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 19:11:50,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:11:50,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:11:50,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-20 19:11:50,009 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:11:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:11:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash -522811545, now seen corresponding path program 1 times [2022-11-20 19:11:50,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:11:50,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311450064] [2022-11-20 19:11:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:11:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:11:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:11:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:11:50,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:11:50,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311450064] [2022-11-20 19:11:50,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311450064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:11:50,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:11:50,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:11:50,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634829575] [2022-11-20 19:11:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:11:50,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:11:50,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:11:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:11:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:11:50,404 INFO L87 Difference]: Start difference. First operand 3526 states and 4102 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:11:54,604 INFO L93 Difference]: Finished difference Result 7260 states and 9364 transitions. [2022-11-20 19:11:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 19:11:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-11-20 19:11:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:11:54,611 INFO L225 Difference]: With dead ends: 7260 [2022-11-20 19:11:54,611 INFO L226 Difference]: Without dead ends: 6329 [2022-11-20 19:11:54,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-20 19:11:54,613 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 657 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:11:54,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2186 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:11:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6329 states. [2022-11-20 19:11:56,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6329 to 4255. [2022-11-20 19:11:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 4250 states have (on average 1.1814117647058824) internal successors, (5021), 4254 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5021 transitions. [2022-11-20 19:11:56,742 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5021 transitions. Word has length 142 [2022-11-20 19:11:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:11:56,742 INFO L495 AbstractCegarLoop]: Abstraction has 4255 states and 5021 transitions. [2022-11-20 19:11:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5021 transitions. [2022-11-20 19:11:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 19:11:56,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:11:56,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:11:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-20 19:11:56,746 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:11:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:11:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1183704380, now seen corresponding path program 1 times [2022-11-20 19:11:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:11:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301824122] [2022-11-20 19:11:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:11:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:11:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:11:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:11:56,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:11:56,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301824122] [2022-11-20 19:11:56,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301824122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:11:56,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:11:56,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:11:56,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055798064] [2022-11-20 19:11:56,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:11:56,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:11:56,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:11:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:11:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:11:56,810 INFO L87 Difference]: Start difference. First operand 4255 states and 5021 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:11:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:11:59,742 INFO L93 Difference]: Finished difference Result 6062 states and 7529 transitions. [2022-11-20 19:11:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:11:59,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-11-20 19:11:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:11:59,748 INFO L225 Difference]: With dead ends: 6062 [2022-11-20 19:11:59,748 INFO L226 Difference]: Without dead ends: 4977 [2022-11-20 19:11:59,750 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 [2022-11-20 19:11:59,750 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 125 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:11:59,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 495 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:11:59,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2022-11-20 19:12:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4264. [2022-11-20 19:12:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4259 states have (on average 1.1645926273773186) internal successors, (4960), 4263 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 4960 transitions. [2022-11-20 19:12:01,856 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 4960 transitions. Word has length 142 [2022-11-20 19:12:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:12:01,856 INFO L495 AbstractCegarLoop]: Abstraction has 4264 states and 4960 transitions. [2022-11-20 19:12:01,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 4960 transitions. [2022-11-20 19:12:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 19:12:01,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:12:01,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:12:01,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-20 19:12:01,859 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:12:01,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:12:01,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1187398464, now seen corresponding path program 1 times [2022-11-20 19:12:01,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:12:01,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798166509] [2022-11-20 19:12:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:12:01,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:12:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:12:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:12:02,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:12:02,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798166509] [2022-11-20 19:12:02,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798166509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:12:02,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:12:02,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:12:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536909891] [2022-11-20 19:12:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:12:02,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:12:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:12:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:12:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:12:02,260 INFO L87 Difference]: Start difference. First operand 4264 states and 4960 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:12:08,635 INFO L93 Difference]: Finished difference Result 10587 states and 13624 transitions. [2022-11-20 19:12:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 19:12:08,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-11-20 19:12:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:12:08,644 INFO L225 Difference]: With dead ends: 10587 [2022-11-20 19:12:08,644 INFO L226 Difference]: Without dead ends: 8941 [2022-11-20 19:12:08,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-11-20 19:12:08,647 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 983 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:12:08,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1990 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:12:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8941 states. [2022-11-20 19:12:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8941 to 5785. [2022-11-20 19:12:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5780 states have (on average 1.209688581314879) internal successors, (6992), 5784 states have internal predecessors, (6992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 6992 transitions. [2022-11-20 19:12:12,044 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 6992 transitions. Word has length 142 [2022-11-20 19:12:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:12:12,044 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 6992 transitions. [2022-11-20 19:12:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 6992 transitions. [2022-11-20 19:12:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 19:12:12,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:12:12,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:12:12,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-20 19:12:12,046 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:12:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:12:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1566056374, now seen corresponding path program 1 times [2022-11-20 19:12:12,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:12:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585090371] [2022-11-20 19:12:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:12:12,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:12:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:12:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:12:12,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:12:12,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585090371] [2022-11-20 19:12:12,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585090371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:12:12,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:12:12,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:12:12,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816730763] [2022-11-20 19:12:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:12:12,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:12:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:12:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:12:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:12:12,431 INFO L87 Difference]: Start difference. First operand 5785 states and 6992 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:12:20,857 INFO L93 Difference]: Finished difference Result 12697 states and 16428 transitions. [2022-11-20 19:12:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 19:12:20,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-11-20 19:12:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:12:20,868 INFO L225 Difference]: With dead ends: 12697 [2022-11-20 19:12:20,868 INFO L226 Difference]: Without dead ends: 11051 [2022-11-20 19:12:20,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-11-20 19:12:20,872 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 795 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:12:20,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2185 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:12:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11051 states. [2022-11-20 19:12:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11051 to 7454. [2022-11-20 19:12:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7454 states, 7449 states have (on average 1.2385555108068198) internal successors, (9226), 7453 states have internal predecessors, (9226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 9226 transitions. [2022-11-20 19:12:25,730 INFO L78 Accepts]: Start accepts. Automaton has 7454 states and 9226 transitions. Word has length 142 [2022-11-20 19:12:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:12:25,730 INFO L495 AbstractCegarLoop]: Abstraction has 7454 states and 9226 transitions. [2022-11-20 19:12:25,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7454 states and 9226 transitions. [2022-11-20 19:12:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-20 19:12:25,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:12:25,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:12:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-20 19:12:25,733 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:12:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:12:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1702438832, now seen corresponding path program 1 times [2022-11-20 19:12:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:12:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405505842] [2022-11-20 19:12:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:12:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:12:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:12:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:12:39,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:12:39,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405505842] [2022-11-20 19:12:39,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405505842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:12:39,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:12:39,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-11-20 19:12:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364014080] [2022-11-20 19:12:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:12:39,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 19:12:39,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:12:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 19:12:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 19:12:39,431 INFO L87 Difference]: Start difference. First operand 7454 states and 9226 transitions. Second operand has 40 states, 40 states have (on average 3.6) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:12:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:12:58,603 INFO L93 Difference]: Finished difference Result 10132 states and 12826 transitions. [2022-11-20 19:12:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 19:12:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-11-20 19:12:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:12:58,613 INFO L225 Difference]: With dead ends: 10132 [2022-11-20 19:12:58,613 INFO L226 Difference]: Without dead ends: 10128 [2022-11-20 19:12:58,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=570, Invalid=3336, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 19:12:58,615 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 846 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 3996 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 7066 SdHoareTripleChecker+Invalid, 4010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 19:12:58,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 7066 Invalid, 4010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3996 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-20 19:12:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10128 states. [2022-11-20 19:13:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10128 to 7454. [2022-11-20 19:13:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7454 states, 7449 states have (on average 1.2384212645992752) internal successors, (9225), 7453 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:13:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 9225 transitions. [2022-11-20 19:13:03,423 INFO L78 Accepts]: Start accepts. Automaton has 7454 states and 9225 transitions. Word has length 144 [2022-11-20 19:13:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:13:03,423 INFO L495 AbstractCegarLoop]: Abstraction has 7454 states and 9225 transitions. [2022-11-20 19:13:03,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:13:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 7454 states and 9225 transitions. [2022-11-20 19:13:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-20 19:13:03,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:13:03,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:13:03,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-20 19:13:03,426 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 19:13:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:13:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash 478675105, now seen corresponding path program 1 times [2022-11-20 19:13:03,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:13:03,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860033898] [2022-11-20 19:13:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:13:03,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:13:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat