./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 532121231e517c5ccd98a51763e37538cc4af219147e372fd62404dc9cc0f64d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:08:45,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:08:45,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:08:45,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:08:45,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:08:45,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:08:45,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:08:45,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:08:45,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:08:45,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:08:45,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:08:45,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:08:45,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:08:45,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:08:45,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:08:45,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:08:45,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:08:45,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:08:45,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:08:45,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:08:45,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:08:45,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:08:45,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:08:45,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:08:45,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:08:45,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:08:45,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:08:45,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:08:45,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:08:45,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:08:45,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:08:45,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:08:45,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:08:45,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:08:45,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:08:45,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:08:45,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:08:45,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:08:45,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:08:45,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:08:45,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:08:45,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:08:45,262 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:08:45,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:08:45,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:08:45,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:08:45,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:08:45,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:08:45,264 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:08:45,264 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:08:45,264 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:08:45,264 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:08:45,264 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:08:45,265 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:08:45,265 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:08:45,265 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:08:45,265 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:08:45,265 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:08:45,265 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:08:45,266 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:08:45,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:08:45,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:08:45,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:08:45,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:08:45,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:08:45,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:08:45,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:08:45,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:08:45,268 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:08:45,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:08:45,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:08:45,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:08:45,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:08:45,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:08:45,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:08:45,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:08:45,269 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:08:45,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:08:45,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:08:45,270 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:08:45,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:08:45,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:08:45,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:08:45,270 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_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 532121231e517c5ccd98a51763e37538cc4af219147e372fd62404dc9cc0f64d [2022-12-14 12:08:45,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:08:45,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:08:45,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:08:45,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:08:45,488 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:08:45,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-12-14 12:08:48,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:08:48,349 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:08:48,349 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-12-14 12:08:48,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/data/a8d79eb40/2be330c2669e44f29259ae381cb99d15/FLAG99a542936 [2022-12-14 12:08:48,377 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/data/a8d79eb40/2be330c2669e44f29259ae381cb99d15 [2022-12-14 12:08:48,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:08:48,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:08:48,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:08:48,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:08:48,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:08:48,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:08:48" (1/1) ... [2022-12-14 12:08:48,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653d93f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:48, skipping insertion in model container [2022-12-14 12:08:48,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:08:48" (1/1) ... [2022-12-14 12:08:48,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:08:48,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:08:48,779 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2022-12-14 12:08:48,807 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2022-12-14 12:08:48,843 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2022-12-14 12:08:48,872 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2022-12-14 12:08:48,949 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2022-12-14 12:08:49,026 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2022-12-14 12:08:49,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:08:49,189 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:08:49,225 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2022-12-14 12:08:49,237 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2022-12-14 12:08:49,252 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2022-12-14 12:08:49,266 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2022-12-14 12:08:49,299 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2022-12-14 12:08:49,338 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_0d5e53e7-2d20-4782-a020-2c16c515d999/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2022-12-14 12:08:49,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:08:49,430 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:08:49,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49 WrapperNode [2022-12-14 12:08:49,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:08:49,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:08:49,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:08:49,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:08:49,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,532 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5971 [2022-12-14 12:08:49,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:08:49,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:08:49,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:08:49,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:08:49,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:08:49,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:08:49,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:08:49,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:08:49,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (1/1) ... [2022-12-14 12:08:49,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:08:49,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:08:49,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:08:49,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:08:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:08:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:08:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:08:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:08:49,912 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:08:49,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:08:51,783 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:08:52,096 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:08:52,096 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 12:08:52,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:08:52 BoogieIcfgContainer [2022-12-14 12:08:52,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:08:52,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:08:52,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:08:52,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:08:52,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:08:48" (1/3) ... [2022-12-14 12:08:52,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28730a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:08:52, skipping insertion in model container [2022-12-14 12:08:52,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:49" (2/3) ... [2022-12-14 12:08:52,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28730a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:08:52, skipping insertion in model container [2022-12-14 12:08:52,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:08:52" (3/3) ... [2022-12-14 12:08:52,109 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-12-14 12:08:52,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:08:52,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 12:08:52,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:08:52,201 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;@2758db1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:08:52,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 12:08:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 12:08:52,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:52,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:52,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:08:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:52,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2092473724, now seen corresponding path program 1 times [2022-12-14 12:08:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:08:52,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543248021] [2022-12-14 12:08:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:08:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:52,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:08:52,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543248021] [2022-12-14 12:08:52,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543248021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:08:52,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:08:52,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:08:52,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278572788] [2022-12-14 12:08:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:08:52,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:08:52,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:08:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:08:52,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:08:52,685 INFO L87 Difference]: Start difference. First operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:53,968 INFO L93 Difference]: Finished difference Result 2373 states and 4072 transitions. [2022-12-14 12:08:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:08:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 12:08:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:53,990 INFO L225 Difference]: With dead ends: 2373 [2022-12-14 12:08:53,990 INFO L226 Difference]: Without dead ends: 1502 [2022-12-14 12:08:53,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:08:53,999 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 6665 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6665 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:54,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6665 Valid, 1458 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 12:08:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-12-14 12:08:54,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1496. [2022-12-14 12:08:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1490 states have (on average 1.2778523489932887) internal successors, (1904), 1495 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1904 transitions. [2022-12-14 12:08:54,081 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1904 transitions. Word has length 51 [2022-12-14 12:08:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:54,081 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 1904 transitions. [2022-12-14 12:08:54,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1904 transitions. [2022-12-14 12:08:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 12:08:54,083 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:54,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:54,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:08:54,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:08:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:54,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1158227955, now seen corresponding path program 1 times [2022-12-14 12:08:54,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:08:54,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231164643] [2022-12-14 12:08:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:54,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:08:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:54,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:08:54,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231164643] [2022-12-14 12:08:54,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231164643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:08:54,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:08:54,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:08:54,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285805362] [2022-12-14 12:08:54,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:08:54,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:08:54,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:08:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:08:54,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:08:54,200 INFO L87 Difference]: Start difference. First operand 1496 states and 1904 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:55,029 INFO L93 Difference]: Finished difference Result 2967 states and 3784 transitions. [2022-12-14 12:08:55,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:08:55,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 12:08:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:55,036 INFO L225 Difference]: With dead ends: 2967 [2022-12-14 12:08:55,037 INFO L226 Difference]: Without dead ends: 2045 [2022-12-14 12:08:55,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:08:55,040 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 4522 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4522 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:55,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4522 Valid, 911 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 12:08:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-12-14 12:08:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 2031. [2022-12-14 12:08:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2025 states have (on average 1.28) internal successors, (2592), 2030 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2592 transitions. [2022-12-14 12:08:55,132 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2592 transitions. Word has length 52 [2022-12-14 12:08:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:55,133 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 2592 transitions. [2022-12-14 12:08:55,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2592 transitions. [2022-12-14 12:08:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 12:08:55,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:55,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:55,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:08:55,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:08:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1808254749, now seen corresponding path program 1 times [2022-12-14 12:08:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:08:55,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195677942] [2022-12-14 12:08:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:08:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:55,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:08:55,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195677942] [2022-12-14 12:08:55,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195677942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:08:55,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:08:55,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:08:55,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854320535] [2022-12-14 12:08:55,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:08:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:08:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:08:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:08:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:08:55,260 INFO L87 Difference]: Start difference. First operand 2031 states and 2592 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:56,027 INFO L93 Difference]: Finished difference Result 4076 states and 5234 transitions. [2022-12-14 12:08:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:08:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 12:08:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:56,036 INFO L225 Difference]: With dead ends: 4076 [2022-12-14 12:08:56,036 INFO L226 Difference]: Without dead ends: 2773 [2022-12-14 12:08:56,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:08:56,039 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 4000 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4000 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:56,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4000 Valid, 814 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 12:08:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2022-12-14 12:08:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2763. [2022-12-14 12:08:56,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2757 states have (on average 1.2745738121146173) internal successors, (3514), 2762 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3514 transitions. [2022-12-14 12:08:56,179 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3514 transitions. Word has length 52 [2022-12-14 12:08:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:56,180 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3514 transitions. [2022-12-14 12:08:56,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3514 transitions. [2022-12-14 12:08:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 12:08:56,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:56,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:56,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:08:56,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:08:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash 77244356, now seen corresponding path program 1 times [2022-12-14 12:08:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:08:56,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238327997] [2022-12-14 12:08:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:08:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:56,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:08:56,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238327997] [2022-12-14 12:08:56,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238327997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:08:56,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:08:56,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 12:08:56,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393983629] [2022-12-14 12:08:56,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:08:56,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 12:08:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:08:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 12:08:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:08:56,452 INFO L87 Difference]: Start difference. First operand 2763 states and 3514 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:57,597 INFO L93 Difference]: Finished difference Result 4386 states and 5702 transitions. [2022-12-14 12:08:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:08:57,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 12:08:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:57,604 INFO L225 Difference]: With dead ends: 4386 [2022-12-14 12:08:57,604 INFO L226 Difference]: Without dead ends: 3858 [2022-12-14 12:08:57,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:08:57,606 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2510 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:57,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2510 Valid, 2542 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 12:08:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2022-12-14 12:08:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 2763. [2022-12-14 12:08:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2757 states have (on average 1.2742110990206748) internal successors, (3513), 2762 states have internal predecessors, (3513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3513 transitions. [2022-12-14 12:08:57,726 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3513 transitions. Word has length 54 [2022-12-14 12:08:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:57,727 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3513 transitions. [2022-12-14 12:08:57,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3513 transitions. [2022-12-14 12:08:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 12:08:57,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:57,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:08:57,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:08:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:57,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1063699171, now seen corresponding path program 1 times [2022-12-14 12:08:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:08:57,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669175271] [2022-12-14 12:08:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:08:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:57,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:08:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669175271] [2022-12-14 12:08:57,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669175271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:08:57,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:08:57,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 12:08:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109597066] [2022-12-14 12:08:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:08:57,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:08:57,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:08:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:08:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:08:57,955 INFO L87 Difference]: Start difference. First operand 2763 states and 3513 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:59,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:59,750 INFO L93 Difference]: Finished difference Result 4950 states and 6433 transitions. [2022-12-14 12:08:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 12:08:59,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 12:08:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:59,757 INFO L225 Difference]: With dead ends: 4950 [2022-12-14 12:08:59,757 INFO L226 Difference]: Without dead ends: 4544 [2022-12-14 12:08:59,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:08:59,759 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 3375 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3375 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:59,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3375 Valid, 3445 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 12:08:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-12-14 12:08:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 2763. [2022-12-14 12:08:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2757 states have (on average 1.273848385926732) internal successors, (3512), 2762 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3512 transitions. [2022-12-14 12:08:59,904 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3512 transitions. Word has length 54 [2022-12-14 12:08:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:59,904 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3512 transitions. [2022-12-14 12:08:59,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:08:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3512 transitions. [2022-12-14 12:08:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 12:08:59,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:59,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:59,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:08:59,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:08:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1340474756, now seen corresponding path program 1 times [2022-12-14 12:08:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:08:59,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729286853] [2022-12-14 12:08:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:08:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:00,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:00,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729286853] [2022-12-14 12:09:00,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729286853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:00,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:00,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 12:09:00,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66253082] [2022-12-14 12:09:00,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:00,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:09:00,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:09:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:09:00,106 INFO L87 Difference]: Start difference. First operand 2763 states and 3512 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:01,453 INFO L93 Difference]: Finished difference Result 3974 states and 5100 transitions. [2022-12-14 12:09:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 12:09:01,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 12:09:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:01,460 INFO L225 Difference]: With dead ends: 3974 [2022-12-14 12:09:01,460 INFO L226 Difference]: Without dead ends: 3968 [2022-12-14 12:09:01,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:09:01,462 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 3421 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3421 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:01,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3421 Valid, 2627 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 12:09:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-12-14 12:09:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 2763. [2022-12-14 12:09:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2757 states have (on average 1.2734856728327892) internal successors, (3511), 2762 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3511 transitions. [2022-12-14 12:09:01,612 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3511 transitions. Word has length 54 [2022-12-14 12:09:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:01,612 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3511 transitions. [2022-12-14 12:09:01,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3511 transitions. [2022-12-14 12:09:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 12:09:01,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:01,614 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] [2022-12-14 12:09:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:09:01,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1906140159, now seen corresponding path program 1 times [2022-12-14 12:09:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:01,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237767726] [2022-12-14 12:09:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:01,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:01,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237767726] [2022-12-14 12:09:01,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237767726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:01,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:01,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:01,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193497056] [2022-12-14 12:09:01,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:01,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:01,677 INFO L87 Difference]: Start difference. First operand 2763 states and 3511 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:02,075 INFO L93 Difference]: Finished difference Result 3427 states and 4444 transitions. [2022-12-14 12:09:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:02,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 12:09:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:02,083 INFO L225 Difference]: With dead ends: 3427 [2022-12-14 12:09:02,083 INFO L226 Difference]: Without dead ends: 2684 [2022-12-14 12:09:02,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:02,085 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 498 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:02,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1613 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2022-12-14 12:09:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2682. [2022-12-14 12:09:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2676 states have (on average 1.2769058295964126) internal successors, (3417), 2681 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 3417 transitions. [2022-12-14 12:09:02,319 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 3417 transitions. Word has length 55 [2022-12-14 12:09:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:02,319 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 3417 transitions. [2022-12-14 12:09:02,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 3417 transitions. [2022-12-14 12:09:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 12:09:02,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:02,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:09:02,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1049277419, now seen corresponding path program 1 times [2022-12-14 12:09:02,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:02,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579480476] [2022-12-14 12:09:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:02,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:02,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579480476] [2022-12-14 12:09:02,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579480476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:02,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:02,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:02,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70333470] [2022-12-14 12:09:02,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:02,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:02,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:02,386 INFO L87 Difference]: Start difference. First operand 2682 states and 3417 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:02,822 INFO L93 Difference]: Finished difference Result 3812 states and 5008 transitions. [2022-12-14 12:09:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 12:09:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:02,828 INFO L225 Difference]: With dead ends: 3812 [2022-12-14 12:09:02,828 INFO L226 Difference]: Without dead ends: 2880 [2022-12-14 12:09:02,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:02,830 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 511 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:02,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1555 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-12-14 12:09:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2878. [2022-12-14 12:09:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2872 states have (on average 1.2945682451253482) internal successors, (3718), 2877 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 3718 transitions. [2022-12-14 12:09:03,084 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 3718 transitions. Word has length 55 [2022-12-14 12:09:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 2878 states and 3718 transitions. [2022-12-14 12:09:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 3718 transitions. [2022-12-14 12:09:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 12:09:03,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:03,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:03,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 12:09:03,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:03,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash 772696843, now seen corresponding path program 1 times [2022-12-14 12:09:03,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:03,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292086137] [2022-12-14 12:09:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:03,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:03,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292086137] [2022-12-14 12:09:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292086137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:03,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:03,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025888909] [2022-12-14 12:09:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:03,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:03,125 INFO L87 Difference]: Start difference. First operand 2878 states and 3718 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:03,690 INFO L93 Difference]: Finished difference Result 5992 states and 7859 transitions. [2022-12-14 12:09:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 12:09:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:03,697 INFO L225 Difference]: With dead ends: 5992 [2022-12-14 12:09:03,697 INFO L226 Difference]: Without dead ends: 4181 [2022-12-14 12:09:03,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:03,699 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 577 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:03,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1771 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2022-12-14 12:09:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4175. [2022-12-14 12:09:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4175 states, 4169 states have (on average 1.2784840489325977) internal successors, (5330), 4174 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4175 states to 4175 states and 5330 transitions. [2022-12-14 12:09:04,136 INFO L78 Accepts]: Start accepts. Automaton has 4175 states and 5330 transitions. Word has length 55 [2022-12-14 12:09:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:04,136 INFO L495 AbstractCegarLoop]: Abstraction has 4175 states and 5330 transitions. [2022-12-14 12:09:04,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4175 states and 5330 transitions. [2022-12-14 12:09:04,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:09:04,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:04,138 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] [2022-12-14 12:09:04,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 12:09:04,138 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:04,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2137132613, now seen corresponding path program 1 times [2022-12-14 12:09:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:04,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495662060] [2022-12-14 12:09:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:04,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:04,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:04,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495662060] [2022-12-14 12:09:04,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495662060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:04,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:04,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 12:09:04,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963345646] [2022-12-14 12:09:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:04,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 12:09:04,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:04,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 12:09:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:09:04,492 INFO L87 Difference]: Start difference. First operand 4175 states and 5330 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:06,863 INFO L93 Difference]: Finished difference Result 8309 states and 10812 transitions. [2022-12-14 12:09:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 12:09:06,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-14 12:09:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:06,875 INFO L225 Difference]: With dead ends: 8309 [2022-12-14 12:09:06,875 INFO L226 Difference]: Without dead ends: 8062 [2022-12-14 12:09:06,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-12-14 12:09:06,877 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 3011 mSDsluCounter, 4423 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 5500 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:06,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3011 Valid, 5500 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 12:09:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8062 states. [2022-12-14 12:09:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8062 to 4162. [2022-12-14 12:09:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 4157 states have (on average 1.2785662737551118) internal successors, (5315), 4161 states have internal predecessors, (5315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 5315 transitions. [2022-12-14 12:09:07,510 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 5315 transitions. Word has length 56 [2022-12-14 12:09:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:07,510 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 5315 transitions. [2022-12-14 12:09:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 5315 transitions. [2022-12-14 12:09:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:09:07,512 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:07,512 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] [2022-12-14 12:09:07,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 12:09:07,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1716509337, now seen corresponding path program 1 times [2022-12-14 12:09:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:07,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947642458] [2022-12-14 12:09:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:07,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:07,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:07,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947642458] [2022-12-14 12:09:07,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947642458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:07,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:07,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011577686] [2022-12-14 12:09:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:07,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:07,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:07,557 INFO L87 Difference]: Start difference. First operand 4162 states and 5315 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:08,285 INFO L93 Difference]: Finished difference Result 7309 states and 9450 transitions. [2022-12-14 12:09:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-14 12:09:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:08,292 INFO L225 Difference]: With dead ends: 7309 [2022-12-14 12:09:08,292 INFO L226 Difference]: Without dead ends: 4203 [2022-12-14 12:09:08,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:08,294 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 744 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:08,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1100 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4203 states. [2022-12-14 12:09:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4203 to 3369. [2022-12-14 12:09:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3365 states have (on average 1.2906389301634473) internal successors, (4343), 3368 states have internal predecessors, (4343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4343 transitions. [2022-12-14 12:09:08,859 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4343 transitions. Word has length 56 [2022-12-14 12:09:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:08,859 INFO L495 AbstractCegarLoop]: Abstraction has 3369 states and 4343 transitions. [2022-12-14 12:09:08,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4343 transitions. [2022-12-14 12:09:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:09:08,861 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:08,861 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] [2022-12-14 12:09:08,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 12:09:08,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1650159387, now seen corresponding path program 1 times [2022-12-14 12:09:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:08,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558456484] [2022-12-14 12:09:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:08,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:08,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:08,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558456484] [2022-12-14 12:09:08,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558456484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:08,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:08,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601053868] [2022-12-14 12:09:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:08,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:08,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:08,897 INFO L87 Difference]: Start difference. First operand 3369 states and 4343 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:09,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:09,631 INFO L93 Difference]: Finished difference Result 6121 states and 8004 transitions. [2022-12-14 12:09:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-14 12:09:09,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:09,637 INFO L225 Difference]: With dead ends: 6121 [2022-12-14 12:09:09,637 INFO L226 Difference]: Without dead ends: 3511 [2022-12-14 12:09:09,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:09,639 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 571 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:09,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 882 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:09,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2022-12-14 12:09:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 2832. [2022-12-14 12:09:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2829 states have (on average 1.2948038176033934) internal successors, (3663), 2831 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3663 transitions. [2022-12-14 12:09:10,141 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3663 transitions. Word has length 56 [2022-12-14 12:09:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:10,142 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 3663 transitions. [2022-12-14 12:09:10,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3663 transitions. [2022-12-14 12:09:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:09:10,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:10,143 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] [2022-12-14 12:09:10,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 12:09:10,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash 235795551, now seen corresponding path program 1 times [2022-12-14 12:09:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:10,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956315616] [2022-12-14 12:09:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:10,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:10,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956315616] [2022-12-14 12:09:10,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956315616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:10,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:10,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:10,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927366677] [2022-12-14 12:09:10,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:10,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:10,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:10,177 INFO L87 Difference]: Start difference. First operand 2832 states and 3663 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:10,926 INFO L93 Difference]: Finished difference Result 5185 states and 6787 transitions. [2022-12-14 12:09:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-14 12:09:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:10,931 INFO L225 Difference]: With dead ends: 5185 [2022-12-14 12:09:10,931 INFO L226 Difference]: Without dead ends: 2686 [2022-12-14 12:09:10,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:10,933 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 406 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:10,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 709 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-12-14 12:09:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2421. [2022-12-14 12:09:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2418 states have (on average 1.2994210090984284) internal successors, (3142), 2420 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3142 transitions. [2022-12-14 12:09:11,359 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3142 transitions. Word has length 56 [2022-12-14 12:09:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:11,359 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 3142 transitions. [2022-12-14 12:09:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3142 transitions. [2022-12-14 12:09:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 12:09:11,360 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:11,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:11,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 12:09:11,360 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:11,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1739046160, now seen corresponding path program 1 times [2022-12-14 12:09:11,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:11,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599172238] [2022-12-14 12:09:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:11,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:11,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599172238] [2022-12-14 12:09:11,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599172238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:11,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:11,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 12:09:11,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255605186] [2022-12-14 12:09:11,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:11,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:09:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:09:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:09:11,688 INFO L87 Difference]: Start difference. First operand 2421 states and 3142 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:13,638 INFO L93 Difference]: Finished difference Result 5224 states and 6807 transitions. [2022-12-14 12:09:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:09:13,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-12-14 12:09:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:13,645 INFO L225 Difference]: With dead ends: 5224 [2022-12-14 12:09:13,645 INFO L226 Difference]: Without dead ends: 4946 [2022-12-14 12:09:13,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-12-14 12:09:13,647 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2600 mSDsluCounter, 3679 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:13,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 4331 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 12:09:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2022-12-14 12:09:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 2377. [2022-12-14 12:09:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2375 states have (on average 1.2993684210526315) internal successors, (3086), 2376 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3086 transitions. [2022-12-14 12:09:14,206 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3086 transitions. Word has length 57 [2022-12-14 12:09:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:14,206 INFO L495 AbstractCegarLoop]: Abstraction has 2377 states and 3086 transitions. [2022-12-14 12:09:14,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3086 transitions. [2022-12-14 12:09:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 12:09:14,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:14,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:14,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 12:09:14,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 503772602, now seen corresponding path program 1 times [2022-12-14 12:09:14,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:14,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894580586] [2022-12-14 12:09:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:14,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:14,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:14,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894580586] [2022-12-14 12:09:14,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894580586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:14,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:14,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-14 12:09:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573873199] [2022-12-14 12:09:14,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:14,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 12:09:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 12:09:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:09:14,813 INFO L87 Difference]: Start difference. First operand 2377 states and 3086 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:18,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:18,446 INFO L93 Difference]: Finished difference Result 4499 states and 5827 transitions. [2022-12-14 12:09:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 12:09:18,447 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-12-14 12:09:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:18,450 INFO L225 Difference]: With dead ends: 4499 [2022-12-14 12:09:18,450 INFO L226 Difference]: Without dead ends: 4495 [2022-12-14 12:09:18,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 12:09:18,451 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 4191 mSDsluCounter, 6102 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 6717 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:18,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 6717 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 12:09:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2022-12-14 12:09:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 2385. [2022-12-14 12:09:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 2383 states have (on average 1.2992026856903063) internal successors, (3096), 2384 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3096 transitions. [2022-12-14 12:09:19,007 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3096 transitions. Word has length 57 [2022-12-14 12:09:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:19,007 INFO L495 AbstractCegarLoop]: Abstraction has 2385 states and 3096 transitions. [2022-12-14 12:09:19,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3096 transitions. [2022-12-14 12:09:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 12:09:19,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:19,008 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] [2022-12-14 12:09:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 12:09:19,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2083415141, now seen corresponding path program 1 times [2022-12-14 12:09:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847442942] [2022-12-14 12:09:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:19,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:19,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847442942] [2022-12-14 12:09:19,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847442942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:19,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:19,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-14 12:09:19,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575173408] [2022-12-14 12:09:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:19,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 12:09:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 12:09:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:09:19,591 INFO L87 Difference]: Start difference. First operand 2385 states and 3096 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:24,046 INFO L93 Difference]: Finished difference Result 4404 states and 5655 transitions. [2022-12-14 12:09:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 12:09:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-14 12:09:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:24,049 INFO L225 Difference]: With dead ends: 4404 [2022-12-14 12:09:24,049 INFO L226 Difference]: Without dead ends: 4400 [2022-12-14 12:09:24,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 12:09:24,050 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 2618 mSDsluCounter, 7386 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2618 SdHoareTripleChecker+Valid, 8061 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:24,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2618 Valid, 8061 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 12:09:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2022-12-14 12:09:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 2373. [2022-12-14 12:09:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2372 states have (on average 1.2993254637436762) internal successors, (3082), 2372 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3082 transitions. [2022-12-14 12:09:24,807 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3082 transitions. Word has length 58 [2022-12-14 12:09:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:24,807 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 3082 transitions. [2022-12-14 12:09:24,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3082 transitions. [2022-12-14 12:09:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 12:09:24,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:24,808 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] [2022-12-14 12:09:24,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 12:09:24,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash -573473436, now seen corresponding path program 1 times [2022-12-14 12:09:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:24,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444386435] [2022-12-14 12:09:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:24,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:24,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444386435] [2022-12-14 12:09:24,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444386435] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:24,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:24,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:09:24,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673401048] [2022-12-14 12:09:24,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:24,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:09:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:24,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:09:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:09:24,899 INFO L87 Difference]: Start difference. First operand 2373 states and 3082 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:25,624 INFO L93 Difference]: Finished difference Result 3931 states and 5185 transitions. [2022-12-14 12:09:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:09:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-14 12:09:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:25,626 INFO L225 Difference]: With dead ends: 3931 [2022-12-14 12:09:25,626 INFO L226 Difference]: Without dead ends: 2143 [2022-12-14 12:09:25,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:09:25,628 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1247 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:25,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 688 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:25,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2022-12-14 12:09:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2139. [2022-12-14 12:09:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2138 states have (on average 1.2885874649204865) internal successors, (2755), 2138 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2755 transitions. [2022-12-14 12:09:26,227 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2755 transitions. Word has length 61 [2022-12-14 12:09:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:26,227 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2755 transitions. [2022-12-14 12:09:26,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2755 transitions. [2022-12-14 12:09:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 12:09:26,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:26,228 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] [2022-12-14 12:09:26,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 12:09:26,228 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 885090156, now seen corresponding path program 1 times [2022-12-14 12:09:26,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:26,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429123540] [2022-12-14 12:09:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:26,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:26,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429123540] [2022-12-14 12:09:26,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429123540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:26,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:26,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408569516] [2022-12-14 12:09:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:26,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:26,298 INFO L87 Difference]: Start difference. First operand 2139 states and 2755 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:27,289 INFO L93 Difference]: Finished difference Result 4463 states and 5905 transitions. [2022-12-14 12:09:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-12-14 12:09:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:27,293 INFO L225 Difference]: With dead ends: 4463 [2022-12-14 12:09:27,293 INFO L226 Difference]: Without dead ends: 3015 [2022-12-14 12:09:27,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:27,294 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 287 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:27,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 716 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2022-12-14 12:09:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2777. [2022-12-14 12:09:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2776 states have (on average 1.2907060518731988) internal successors, (3583), 2776 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 3583 transitions. [2022-12-14 12:09:28,096 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 3583 transitions. Word has length 62 [2022-12-14 12:09:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:28,096 INFO L495 AbstractCegarLoop]: Abstraction has 2777 states and 3583 transitions. [2022-12-14 12:09:28,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 3583 transitions. [2022-12-14 12:09:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 12:09:28,097 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:28,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:28,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 12:09:28,097 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:28,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:28,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1287363230, now seen corresponding path program 1 times [2022-12-14 12:09:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:28,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856777062] [2022-12-14 12:09:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:28,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:28,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856777062] [2022-12-14 12:09:28,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856777062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:28,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:28,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301417561] [2022-12-14 12:09:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:28,180 INFO L87 Difference]: Start difference. First operand 2777 states and 3583 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:29,507 INFO L93 Difference]: Finished difference Result 6156 states and 8117 transitions. [2022-12-14 12:09:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-12-14 12:09:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:29,510 INFO L225 Difference]: With dead ends: 6156 [2022-12-14 12:09:29,510 INFO L226 Difference]: Without dead ends: 4134 [2022-12-14 12:09:29,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:29,512 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 230 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:29,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 747 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2022-12-14 12:09:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3762. [2022-12-14 12:09:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3762 states, 3761 states have (on average 1.2874235575644775) internal successors, (4842), 3761 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 4842 transitions. [2022-12-14 12:09:30,752 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 4842 transitions. Word has length 63 [2022-12-14 12:09:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:30,752 INFO L495 AbstractCegarLoop]: Abstraction has 3762 states and 4842 transitions. [2022-12-14 12:09:30,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 4842 transitions. [2022-12-14 12:09:30,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 12:09:30,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:30,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:30,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 12:09:30,754 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:30,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash -661794902, now seen corresponding path program 1 times [2022-12-14 12:09:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:30,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498285348] [2022-12-14 12:09:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:30,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:30,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498285348] [2022-12-14 12:09:30,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498285348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:30,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:30,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 12:09:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233142642] [2022-12-14 12:09:30,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:30,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 12:09:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 12:09:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:09:30,918 INFO L87 Difference]: Start difference. First operand 3762 states and 4842 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:34,371 INFO L93 Difference]: Finished difference Result 8598 states and 11084 transitions. [2022-12-14 12:09:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 12:09:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-14 12:09:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:34,378 INFO L225 Difference]: With dead ends: 8598 [2022-12-14 12:09:34,378 INFO L226 Difference]: Without dead ends: 8596 [2022-12-14 12:09:34,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-12-14 12:09:34,379 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2005 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:34,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 2485 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:09:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2022-12-14 12:09:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 4420. [2022-12-14 12:09:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 1.2826431319303009) internal successors, (5668), 4419 states have internal predecessors, (5668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5668 transitions. [2022-12-14 12:09:36,098 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5668 transitions. Word has length 68 [2022-12-14 12:09:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:36,098 INFO L495 AbstractCegarLoop]: Abstraction has 4420 states and 5668 transitions. [2022-12-14 12:09:36,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5668 transitions. [2022-12-14 12:09:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 12:09:36,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:36,100 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] [2022-12-14 12:09:36,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 12:09:36,100 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2094365714, now seen corresponding path program 1 times [2022-12-14 12:09:36,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:36,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908785986] [2022-12-14 12:09:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:36,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:36,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908785986] [2022-12-14 12:09:36,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908785986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:36,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:36,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 12:09:36,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720742405] [2022-12-14 12:09:36,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:36,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 12:09:36,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 12:09:36,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:09:36,286 INFO L87 Difference]: Start difference. First operand 4420 states and 5668 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:39,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:39,920 INFO L93 Difference]: Finished difference Result 8466 states and 10913 transitions. [2022-12-14 12:09:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 12:09:39,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 12:09:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:39,927 INFO L225 Difference]: With dead ends: 8466 [2022-12-14 12:09:39,927 INFO L226 Difference]: Without dead ends: 8464 [2022-12-14 12:09:39,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:09:39,929 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1421 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:39,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 2719 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:09:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8464 states. [2022-12-14 12:09:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8464 to 4761. [2022-12-14 12:09:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4761 states, 4760 states have (on average 1.2796218487394957) internal successors, (6091), 4760 states have internal predecessors, (6091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 6091 transitions. [2022-12-14 12:09:42,095 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 6091 transitions. Word has length 74 [2022-12-14 12:09:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:42,095 INFO L495 AbstractCegarLoop]: Abstraction has 4761 states and 6091 transitions. [2022-12-14 12:09:42,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 6091 transitions. [2022-12-14 12:09:42,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 12:09:42,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:42,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:42,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 12:09:42,097 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:42,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash 227818795, now seen corresponding path program 1 times [2022-12-14 12:09:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:42,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291843579] [2022-12-14 12:09:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:42,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:42,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291843579] [2022-12-14 12:09:42,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291843579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:42,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:42,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 12:09:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839391840] [2022-12-14 12:09:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:42,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 12:09:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:42,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 12:09:42,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:09:42,281 INFO L87 Difference]: Start difference. First operand 4761 states and 6091 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:46,165 INFO L93 Difference]: Finished difference Result 8422 states and 10841 transitions. [2022-12-14 12:09:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 12:09:46,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-14 12:09:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:46,172 INFO L225 Difference]: With dead ends: 8422 [2022-12-14 12:09:46,172 INFO L226 Difference]: Without dead ends: 8420 [2022-12-14 12:09:46,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:09:46,174 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1414 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:46,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 2875 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:09:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8420 states. [2022-12-14 12:09:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8420 to 5088. [2022-12-14 12:09:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 5087 states have (on average 1.2775702771771182) internal successors, (6499), 5087 states have internal predecessors, (6499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 6499 transitions. [2022-12-14 12:09:48,227 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 6499 transitions. Word has length 75 [2022-12-14 12:09:48,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:48,227 INFO L495 AbstractCegarLoop]: Abstraction has 5088 states and 6499 transitions. [2022-12-14 12:09:48,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 6499 transitions. [2022-12-14 12:09:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 12:09:48,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:48,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:48,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 12:09:48,229 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash -496648120, now seen corresponding path program 1 times [2022-12-14 12:09:48,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:48,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347710531] [2022-12-14 12:09:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:48,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:48,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347710531] [2022-12-14 12:09:48,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347710531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:48,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:48,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 12:09:48,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601099420] [2022-12-14 12:09:48,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 12:09:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 12:09:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:09:48,400 INFO L87 Difference]: Start difference. First operand 5088 states and 6499 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:52,325 INFO L93 Difference]: Finished difference Result 7896 states and 10160 transitions. [2022-12-14 12:09:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 12:09:52,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-14 12:09:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:52,332 INFO L225 Difference]: With dead ends: 7896 [2022-12-14 12:09:52,333 INFO L226 Difference]: Without dead ends: 7894 [2022-12-14 12:09:52,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-12-14 12:09:52,334 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1632 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:52,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 2382 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:09:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7894 states. [2022-12-14 12:09:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7894 to 5049. [2022-12-14 12:09:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5049 states, 5048 states have (on average 1.2781299524564185) internal successors, (6452), 5048 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 6452 transitions. [2022-12-14 12:09:54,453 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 6452 transitions. Word has length 75 [2022-12-14 12:09:54,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:54,453 INFO L495 AbstractCegarLoop]: Abstraction has 5049 states and 6452 transitions. [2022-12-14 12:09:54,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 6452 transitions. [2022-12-14 12:09:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 12:09:54,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:54,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:54,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 12:09:54,455 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1870388786, now seen corresponding path program 1 times [2022-12-14 12:09:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:54,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417317032] [2022-12-14 12:09:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:09:54,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:09:54,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417317032] [2022-12-14 12:09:54,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417317032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:54,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:54,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:09:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462146839] [2022-12-14 12:09:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:54,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:09:54,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:09:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:09:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:54,514 INFO L87 Difference]: Start difference. First operand 5049 states and 6452 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:57,024 INFO L93 Difference]: Finished difference Result 9457 states and 12328 transitions. [2022-12-14 12:09:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:09:57,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-14 12:09:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:57,030 INFO L225 Difference]: With dead ends: 9457 [2022-12-14 12:09:57,030 INFO L226 Difference]: Without dead ends: 6631 [2022-12-14 12:09:57,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:09:57,033 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 296 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:57,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 705 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:09:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2022-12-14 12:09:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6197. [2022-12-14 12:09:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6197 states, 6196 states have (on average 1.275823111684958) internal successors, (7905), 6196 states have internal predecessors, (7905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 7905 transitions. [2022-12-14 12:09:59,402 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 7905 transitions. Word has length 78 [2022-12-14 12:09:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:59,402 INFO L495 AbstractCegarLoop]: Abstraction has 6197 states and 7905 transitions. [2022-12-14 12:09:59,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:09:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 7905 transitions. [2022-12-14 12:09:59,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 12:09:59,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:59,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:09:59,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 12:09:59,404 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:09:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1815682915, now seen corresponding path program 1 times [2022-12-14 12:09:59,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:09:59,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844833173] [2022-12-14 12:09:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:59,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:09:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:10:00,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:10:00,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844833173] [2022-12-14 12:10:00,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844833173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:10:00,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148750291] [2022-12-14 12:10:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:00,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:10:00,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:10:00,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:10:00,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:10:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:00,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 12:10:00,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:10:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:10:00,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:10:00,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148750291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:10:00,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:10:00,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [22] total 27 [2022-12-14 12:10:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212023822] [2022-12-14 12:10:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:10:00,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 12:10:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:10:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 12:10:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-12-14 12:10:00,795 INFO L87 Difference]: Start difference. First operand 6197 states and 7905 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:10:04,621 INFO L93 Difference]: Finished difference Result 10238 states and 13069 transitions. [2022-12-14 12:10:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:10:04,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 79 [2022-12-14 12:10:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:10:04,627 INFO L225 Difference]: With dead ends: 10238 [2022-12-14 12:10:04,628 INFO L226 Difference]: Without dead ends: 7698 [2022-12-14 12:10:04,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2022-12-14 12:10:04,630 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1797 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:10:04,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 869 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 12:10:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7698 states. [2022-12-14 12:10:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7698 to 6183. [2022-12-14 12:10:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6183 states, 6182 states have (on average 1.2762859915884828) internal successors, (7890), 6182 states have internal predecessors, (7890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6183 states to 6183 states and 7890 transitions. [2022-12-14 12:10:07,443 INFO L78 Accepts]: Start accepts. Automaton has 6183 states and 7890 transitions. Word has length 79 [2022-12-14 12:10:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:10:07,444 INFO L495 AbstractCegarLoop]: Abstraction has 6183 states and 7890 transitions. [2022-12-14 12:10:07,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6183 states and 7890 transitions. [2022-12-14 12:10:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 12:10:07,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:10:07,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:10:07,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:10:07,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:10:07,648 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:10:07,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:10:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash 639244293, now seen corresponding path program 1 times [2022-12-14 12:10:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:10:07,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754378859] [2022-12-14 12:10:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:10:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:10:07,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:10:07,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754378859] [2022-12-14 12:10:07,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754378859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:10:07,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:10:07,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 12:10:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945153166] [2022-12-14 12:10:07,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:10:07,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:10:07,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:10:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:10:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:10:07,837 INFO L87 Difference]: Start difference. First operand 6183 states and 7890 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:10:12,877 INFO L93 Difference]: Finished difference Result 11963 states and 15178 transitions. [2022-12-14 12:10:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 12:10:12,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 79 [2022-12-14 12:10:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:10:12,885 INFO L225 Difference]: With dead ends: 11963 [2022-12-14 12:10:12,885 INFO L226 Difference]: Without dead ends: 9425 [2022-12-14 12:10:12,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 12:10:12,888 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 1945 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:10:12,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 1258 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 12:10:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9425 states. [2022-12-14 12:10:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9425 to 6163. [2022-12-14 12:10:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6163 states, 6162 states have (on average 1.2768581629341123) internal successors, (7868), 6162 states have internal predecessors, (7868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6163 states to 6163 states and 7868 transitions. [2022-12-14 12:10:15,498 INFO L78 Accepts]: Start accepts. Automaton has 6163 states and 7868 transitions. Word has length 79 [2022-12-14 12:10:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:10:15,499 INFO L495 AbstractCegarLoop]: Abstraction has 6163 states and 7868 transitions. [2022-12-14 12:10:15,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:15,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6163 states and 7868 transitions. [2022-12-14 12:10:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 12:10:15,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:10:15,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:10:15,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 12:10:15,500 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:10:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:10:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash -813486873, now seen corresponding path program 1 times [2022-12-14 12:10:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:10:15,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754943550] [2022-12-14 12:10:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:10:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 12:10:15,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:10:15,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754943550] [2022-12-14 12:10:15,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754943550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:10:15,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:10:15,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 12:10:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601311270] [2022-12-14 12:10:15,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:10:15,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:10:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:10:15,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:10:15,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:10:15,644 INFO L87 Difference]: Start difference. First operand 6163 states and 7868 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:10:21,951 INFO L93 Difference]: Finished difference Result 13245 states and 16828 transitions. [2022-12-14 12:10:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 12:10:21,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-14 12:10:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:10:21,960 INFO L225 Difference]: With dead ends: 13245 [2022-12-14 12:10:21,961 INFO L226 Difference]: Without dead ends: 10697 [2022-12-14 12:10:21,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:10:21,964 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1183 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 12:10:21,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1657 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 12:10:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2022-12-14 12:10:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 6145. [2022-12-14 12:10:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 6144 states have (on average 1.27734375) internal successors, (7848), 6144 states have internal predecessors, (7848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 7848 transitions. [2022-12-14 12:10:24,684 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 7848 transitions. Word has length 80 [2022-12-14 12:10:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:10:24,684 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 7848 transitions. [2022-12-14 12:10:24,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 7848 transitions. [2022-12-14 12:10:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 12:10:24,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:10:24,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:10:24,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 12:10:24,686 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:10:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:10:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1440154072, now seen corresponding path program 1 times [2022-12-14 12:10:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:10:24,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931509446] [2022-12-14 12:10:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:24,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:10:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:10:25,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:10:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931509446] [2022-12-14 12:10:25,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931509446] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:10:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882704948] [2022-12-14 12:10:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:25,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:10:25,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:10:25,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:10:25,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:10:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:25,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 12:10:25,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:10:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:10:25,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:10:25,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882704948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:10:25,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:10:25,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2022-12-14 12:10:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036836952] [2022-12-14 12:10:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:10:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 12:10:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:10:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 12:10:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-12-14 12:10:25,807 INFO L87 Difference]: Start difference. First operand 6145 states and 7848 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:10:30,736 INFO L93 Difference]: Finished difference Result 11691 states and 14954 transitions. [2022-12-14 12:10:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 12:10:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 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 80 [2022-12-14 12:10:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:10:30,744 INFO L225 Difference]: With dead ends: 11691 [2022-12-14 12:10:30,745 INFO L226 Difference]: Without dead ends: 9165 [2022-12-14 12:10:30,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2022-12-14 12:10:30,747 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1408 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:10:30,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2019 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:10:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9165 states. [2022-12-14 12:10:33,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9165 to 6318. [2022-12-14 12:10:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 6317 states have (on average 1.278454962798797) internal successors, (8076), 6317 states have internal predecessors, (8076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 8076 transitions. [2022-12-14 12:10:33,558 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 8076 transitions. Word has length 80 [2022-12-14 12:10:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:10:33,559 INFO L495 AbstractCegarLoop]: Abstraction has 6318 states and 8076 transitions. [2022-12-14 12:10:33,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 8076 transitions. [2022-12-14 12:10:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 12:10:33,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:10:33,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:10:33,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:10:33,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 12:10:33,762 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:10:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:10:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash 808017709, now seen corresponding path program 1 times [2022-12-14 12:10:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:10:33,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339454362] [2022-12-14 12:10:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:10:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:10:34,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:10:34,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339454362] [2022-12-14 12:10:34,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339454362] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:10:34,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898418209] [2022-12-14 12:10:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:34,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:10:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:10:34,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:10:34,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:10:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:34,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 12:10:34,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:10:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 12:10:35,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:10:35,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898418209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:10:35,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:10:35,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 27 [2022-12-14 12:10:35,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77589531] [2022-12-14 12:10:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:10:35,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 12:10:35,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:10:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 12:10:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-12-14 12:10:35,236 INFO L87 Difference]: Start difference. First operand 6318 states and 8076 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:10:41,376 INFO L93 Difference]: Finished difference Result 12903 states and 16550 transitions. [2022-12-14 12:10:41,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 12:10:41,376 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-14 12:10:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:10:41,384 INFO L225 Difference]: With dead ends: 12903 [2022-12-14 12:10:41,385 INFO L226 Difference]: Without dead ends: 10385 [2022-12-14 12:10:41,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 12:10:41,388 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2277 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 3727 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 12:10:41,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 3727 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 12:10:41,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10385 states. [2022-12-14 12:10:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10385 to 7196. [2022-12-14 12:10:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7196 states, 7195 states have (on average 1.2815844336344684) internal successors, (9221), 7195 states have internal predecessors, (9221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7196 states to 7196 states and 9221 transitions. [2022-12-14 12:10:44,678 INFO L78 Accepts]: Start accepts. Automaton has 7196 states and 9221 transitions. Word has length 80 [2022-12-14 12:10:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:10:44,678 INFO L495 AbstractCegarLoop]: Abstraction has 7196 states and 9221 transitions. [2022-12-14 12:10:44,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:10:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7196 states and 9221 transitions. [2022-12-14 12:10:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 12:10:44,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:10:44,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:10:44,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:10:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 12:10:44,880 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:10:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:10:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 400786700, now seen corresponding path program 1 times [2022-12-14 12:10:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:10:44,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219608726] [2022-12-14 12:10:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:10:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:10:45,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:10:45,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219608726] [2022-12-14 12:10:45,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219608726] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:10:45,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884797756] [2022-12-14 12:10:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:10:45,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:10:45,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:10:45,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:10:45,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:10:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:10:45,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 87 conjunts are in the unsatisfiable core [2022-12-14 12:10:45,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:10:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:10:48,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:11:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:11,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884797756] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:11:11,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1419897320] [2022-12-14 12:11:11,360 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-12-14 12:11:11,360 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:11:11,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:11:11,367 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:11:11,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:11:11,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:11:11,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:11:11,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 12:11:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:11:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:11:11,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:11:11,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 12:11:19,902 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:12:59,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1419897320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:12:59,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:12:59,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [16, 25, 25] total 105 [2022-12-14 12:12:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460684990] [2022-12-14 12:12:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:12:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-14 12:12:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:12:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-14 12:12:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2000, Invalid=8920, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 12:12:59,779 INFO L87 Difference]: Start difference. First operand 7196 states and 9221 transitions. Second operand has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 44 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:13:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:40,219 INFO L93 Difference]: Finished difference Result 9831 states and 12631 transitions. [2022-12-14 12:13:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-14 12:13:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 44 states have internal predecessors, (76), 0 states have call successors, (0), 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 81 [2022-12-14 12:13:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:40,225 INFO L225 Difference]: With dead ends: 9831 [2022-12-14 12:13:40,225 INFO L226 Difference]: Without dead ends: 7183 [2022-12-14 12:13:40,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 135 SyntacticMatches, 20 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6288 ImplicationChecksByTransitivity, 104.7s TimeCoverageRelationStatistics Valid=2000, Invalid=8920, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 12:13:40,229 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 9 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 11153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 11156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:40,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 689 Invalid, 11156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11153 Invalid, 0 Unknown, 0 Unchecked, 37.0s Time] [2022-12-14 12:13:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7183 states. [2022-12-14 12:13:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7183 to 7183. [2022-12-14 12:13:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7183 states, 7182 states have (on average 1.281258702311334) internal successors, (9202), 7182 states have internal predecessors, (9202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:13:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 9202 transitions. [2022-12-14 12:13:43,573 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 9202 transitions. Word has length 81 [2022-12-14 12:13:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:43,573 INFO L495 AbstractCegarLoop]: Abstraction has 7183 states and 9202 transitions. [2022-12-14 12:13:43,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 44 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:13:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 9202 transitions. [2022-12-14 12:13:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 12:13:43,574 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:43,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:43,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 12:13:43,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:13:43,777 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:13:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash 326749101, now seen corresponding path program 1 times [2022-12-14 12:13:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:43,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503071496] [2022-12-14 12:13:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:13:43,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:43,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503071496] [2022-12-14 12:13:43,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503071496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:43,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:43,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:13:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553678238] [2022-12-14 12:13:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:13:43,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:13:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:13:43,856 INFO L87 Difference]: Start difference. First operand 7183 states and 9202 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:13:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:50,061 INFO L93 Difference]: Finished difference Result 17791 states and 22936 transitions. [2022-12-14 12:13:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:13:50,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-12-14 12:13:50,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:50,073 INFO L225 Difference]: With dead ends: 17791 [2022-12-14 12:13:50,073 INFO L226 Difference]: Without dead ends: 12441 [2022-12-14 12:13:50,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:13:50,078 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 386 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:50,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 772 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:13:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12441 states. [2022-12-14 12:13:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12441 to 9228. [2022-12-14 12:13:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9227 states have (on average 1.2748455619377912) internal successors, (11763), 9227 states have internal predecessors, (11763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:13:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 11763 transitions. [2022-12-14 12:13:54,792 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 11763 transitions. Word has length 81 [2022-12-14 12:13:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:54,792 INFO L495 AbstractCegarLoop]: Abstraction has 9228 states and 11763 transitions. [2022-12-14 12:13:54,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:13:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 11763 transitions. [2022-12-14 12:13:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 12:13:54,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:54,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:54,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 12:13:54,794 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 12:13:54,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 850740099, now seen corresponding path program 1 times [2022-12-14 12:13:54,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:54,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378279547] [2022-12-14 12:13:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:54,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:13:55,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:55,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378279547] [2022-12-14 12:13:55,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378279547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:13:55,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525578765] [2022-12-14 12:13:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:55,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:13:55,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:13:55,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:13:55,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d5e53e7-2d20-4782-a020-2c16c515d999/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:13:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:55,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-14 12:13:55,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:13:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:13:57,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:14:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:14:13,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525578765] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:14:13,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [596247229] [2022-12-14 12:14:13,087 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 12:14:13,088 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:14:13,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:14:13,088 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:14:13,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:14:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:14:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:14:13,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:14:13,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 12:14:13,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:14:13,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:14:13,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 12:16:28,647 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:16:35,391 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 705 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:18:04,300 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 688 DAG size of output: 502 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:18:11,673 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 692 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:18:19,794 WARN L233 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 695 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:18:27,696 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 698 DAG size of output: 512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:18:36,959 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 700 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:18:46,848 WARN L233 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 867 DAG size of output: 411 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:19:11,151 WARN L233 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 875 DAG size of output: 558 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:19:21,254 WARN L233 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 876 DAG size of output: 575 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:19:44,905 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 752 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:19:44,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '546314#(and (= ~__tmp_3483_0~0 0) (= ~__return_1183~0 0) (= ~__tmp_2914_0~0 0) (= ~__return_1413~0 0) (= ~__return_3093~0 0) (= 0 ~__tmp_3126_0~0) (<= ~send3~0 127) (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (<= 0 ~id3~0) (<= (+ |ULTIMATE.start_main_~node1__m1~64#1| 1) 0) (= ~__return_1483~0 0) (<= 0 (+ ~p3_new~0 1)) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~39#1| 1)) (<= ~st3~0 0) (= ~__return_3722~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~42#1| 1) 0) (<= 0 ~mode1~0) (= ~__tmp_5574_0~0 0) (= ~__return_2647~0 0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1| 127) (<= ~__return_102~0 1) (= ~__return_1463~0 0) (<= 0 ~id1~0) (= ~__return_1543~0 0) (<= 0 ~__tmp_4786_0~0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (= ~__tmp_3233_0~0 0) (<= 0 ~__return_5286~0) (= ~__tmp_2632_0~0 0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~62#1| 0) (<= 0 ~__return_1353~0) (<= 1 |ULTIMATE.start_main_~check__tmp~69#1|) (<= ~__return_2890~0 0) (<= ~__tmp_4871_0~0 0) (<= ~__return_1113~0 0) (<= ~__return_1143~0 0) (<= 1 ~__return_102~0) (<= 0 ~__tmp_4895_0~0) (<= 0 ~mode3~0) (<= 0 ~__return_1403~0) (<= 0 ~__tmp_4718_0~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~43#1| 1)) (<= 0 ~__tmp_2136_0~0) (<= 0 ~__tmp_2301_0~0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (<= ~__return_1563~0 0) (= ~__return_1153~0 0) (<= 0 ~__tmp_2785_0~0) (<= ~__tmp_2417_0~0 0) (<= ~__return_2737~0 0) (= ~__return_1583~0 0) (= ~__return_1203~0 0) (<= 1 ~__tmp_3860_0~0) (<= 0 ~__return_3859~0) (= ~__return_3498~0 0) (<= 0 ~__return_1343~0) (<= 0 ~__return_1113~0) (<= ~__return_2354~0 0) (<= ~__return_2112~0 0) (<= ~__tmp_2785_0~0 0) (<= 0 ~__tmp_4607_0~0) (<= ~__tmp_4607_0~0 0) (<= 0 ~__tmp_3399_0~0) (<= 0 ~__return_1273~0) (= ~__return_2022~0 0) (<= 1 ~__tmp_5155_0~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~20#1| 1)) (<= ~__tmp_3399_0~0 0) (<= |ULTIMATE.start_main_~check__tmp~32#1| 1) (<= 0 ~__tmp_2238_0~0) (<= ~__return_1373~0 0) (= ~__return_1253~0 0) (<= 0 ~__tmp_4546_0~0) (= ~__tmp_2722_0~0 0) (<= ~__return_2468~0 0) (= ~__tmp_3886_0~0 0) (= 0 ~__tmp_3114_0~0) (<= |#NULL.offset| 0) (<= 0 ~__return_1373~0) (<= ~mode2~0 1) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1|) (= ~__return_1443~0 0) (<= ~__tmp_2148_0~0 0) (<= ~__tmp_1983_0~0 0) (<= 0 ~__return_1393~0) (<= 0 ~__return_1133~0) (<= 0 ~st1~0) (<= ~__return_4672~0 0) (<= ~__tmp_2289_0~0 0) (= ~__return_1533~0 0) (<= 0 ~__return_1423~0) (<= ~__return_4910~0 0) (= ~__return_1513~0 0) (= |ULTIMATE.start_main_~check__tmp~67#1| 1) (<= |ULTIMATE.start_main_~assert__arg~68#1| 1) (<= ~__tmp_2136_0~0 0) (<= ~__tmp_4786_0~0 0) (<= ~__return_1553~0 0) (<= 0 ~st2~0) (<= ~__return_1273~0 0) (<= 0 ~__return_1173~0) (<= 0 ~__tmp_5386_0~0) (= ~__return_1313~0 0) (<= ~p1~0 0) (<= 0 ~__return_2468~0) (<= ~__tmp_4461_0~0 0) (<= ~__return_main~0 0) (<= ~mode3~0 1) (<= 0 ~p2~0) (<= 1 ~__tmp_5208_0~0) (<= 0 ~__tmp_3433_0~0) (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~63#1|) (<= 0 ~__tmp_2608_0~0) (<= 0 ~__tmp_4871_0~0) (<= ~__return_1133~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~66#1|) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~42#1| 1)) (<= 0 ~__return_1363~0) (<= 0 ~__return_2979~0) (= ~__tmp_2574_0~0 0) (<= ~__tmp_4956_0~0 0) (<= ~__return_1573~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (= ~__tmp_2489_0~0 0) (<= 0 (+ ~p2_old~0 1)) (<= ~__return_1523~0 1) (<= ~__return_1343~0 0) (<= ~id1~0 127) (<= 0 ~__return_1223~0) (<= ~__tmp_2097_0~0 0) (<= ~__return_1173~0 0) (<= 0 ~__tmp_2417_0~0) (<= 0 ~__tmp_4057_0~0) (<= ~__tmp_2301_0~0 0) (<= ~__return_5286~0 1) (<= 0 ~__return_2737~0) (<= 0 ~__tmp_2926_0~0) (<= 0 ~__return_2265~0) (<= ~__return_1473~0 0) (<= |ULTIMATE.start_main_~assert__arg~66#1| 1) (<= 0 ~__return_1563~0) (<= ~__return_1403~0 0) (<= ~__return_4476~0 0) (<= 0 ~__tmp_4956_0~0) (<= 0 |ULTIMATE.start_main_~check__tmp~32#1|) (= ~__tmp_4522_0~0 0) (<= 0 ~__return_1323~0) (<= 0 ~__return_4672~0) (<= 0 ~__tmp_2250_0~0) (<= ~__tmp_2238_0~0 0) (<= ~__tmp_3433_0~0 0) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_1123~0 0) (= ~__tmp_5067_0~0 0) (<= 0 ~__tmp_4152_0~0) (= ~__tmp_2710_0~0 0) (<= 0 ~__tmp_4247_0~0) (<= 2 |ULTIMATE.start_main_~main__i2~0#1|) (= ~__return_5936~0 0) (<= 0 ~__return_1433~0) (<= (+ ~nomsg~0 1) 0) (<= 0 ~__tmp_2289_0~0) (<= ~mode1~0 1) (<= ~__return_1393~0 0) (<= ~__tmp_2501_0~0 0) (<= |ULTIMATE.start_main_~__tmp_67~0#1| 1) (= ~__return_1243~0 0) (<= 0 ~__return_1383~0) (<= ~__tmp_4437_0~0 0) (<= ~__return_2175~0 0) (= ~__tmp_3199_0~0 0) (<= ~__return_2265~0 0) (<= ~__return_1193~0 0) (<= (+ ~p2_new~0 1) 0) (<= ~__return_1223~0 0) (<= 0 ~__tmp_4342_0~0) (<= ~__return_1333~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~47#1| 1)) (= ~__tmp_5674_0~0 0) (<= ~__tmp_3042_0~0 0) (<= 0 ~__tmp_4810_0~0) (<= 1 ~__return_1523~0) (<= ~__tmp_3633_0~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~64#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~43#1| 1) 0) (= ~__tmp_2620_0~0 0) (<= ~__tmp_2761_0~0 0) (<= ~__tmp_2773_0~0 0) (<= ~__return_1383~0 0) (<= 0 ~__return_3612~0) (<= 0 ~__return_1573~0) (<= 0 ~__tmp_2863_0~0) (<= ~__tmp_4342_0~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (<= ~__return_2800~0 0) (<= 0 ~__return_4476~0) (<= ~__tmp_4718_0~0 0) (<= 0 ~__return_main~0) (= ~__return_1493~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~20#1| 1) 0) (<= ~__tmp_4546_0~0 0) (<= 0 ~__tmp_3042_0~0) (<= 0 |ULTIMATE.start_main_~__tmp_69~0#1|) (<= ~id3~0 127) (= ~__return_1213~0 0) (<= 0 ~__return_1553~0) (<= ~__tmp_3599_0~0 0) (<= ~__tmp_4057_0~0 0) (<= 0 ~__return_1333~0) (<= 0 ~__return_4910~0) (<= 1 ~__return_4825~0) (<= ~__return_5021~0 0) (<= 0 ~id2~0) (<= 0 (+ ~nomsg~0 1)) (<= 0 ~__return_2800~0) (= ~__return_4561~0 0) (<= ~__return_1423~0 0) (<= ~__tmp_2608_0~0 0) (<= 0 ~__tmp_3633_0~0) (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~27#1|) (<= 0 ~__return_2890~0) (<= ~__tmp_2007_0~0 0) (= ~__tmp_2160_0~0 0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~62#1|) (<= ~__return_1163~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~39#1| 1) 0) (<= ~__return_1323~0 0) (= ~__tmp_2875_0~0 0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~61#1| 0) (<= ~__tmp_4810_0~0 0) (<= ~__tmp_2863_0~0 0) (<= 0 ~__return_1503~0) (<= ~p2~0 0) (<= 0 ~__return_2175~0) (<= 0 ~mode2~0) (<= 0 ~__tmp_4461_0~0) (<= 0 ~__return_2354~0) (<= ~__return_1293~0 0) (= ~__return_1303~0 0) (<= 0 ~__return_1193~0) (= ~__tmp_2085_0~0 0) (<= ~__return_3612~0 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (<= ~__return_1353~0 0) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (<= ~__return_2979~0 0) (<= |ULTIMATE.start_main_~__tmp_69~0#1| 1) (<= 0 ~__return_5021~0) (= ~__tmp_3283_0~0 0) (<= ~__tmp_4152_0~0 0) (<= ~__tmp_1995_0~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~68#1|) (<= 0 ~__tmp_2761_0~0) (<= 0 ~__tmp_4437_0~0) (<= (+ ~p3_new~0 1) 0) (<= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= ~__return_3859~0 0) (<= 0 |#NULL.offset|) (<= 0 ~__return_1473~0) (<= 0 ~__tmp_2148_0~0) (<= 0 ~__tmp_2501_0~0) (<= (+ |ULTIMATE.start_main_~node2__m2~47#1| 1) 0) (= ~p3~0 0) (<= (+ ~p2_old~0 1) 0) (<= 0 (+ ~p1_new~0 1)) (<= 0 ~__return_1263~0) (<= ~__tmp_2926_0~0 0) (= ~__return_1233~0 0) (<= ~__tmp_4247_0~0 0) (<= ~__return_1263~0 0) (<= ~__return_1433~0 0) (<= ~__return_4825~0 1) (<= 0 ~__tmp_2773_0~0) (<= 0 ~send3~0) (<= 0 ~p1~0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~__tmp_67~0#1|) (<= 0 |ULTIMATE.start_main_~main__c1~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~63#1| 1) (<= 0 ~__return_1293~0) (<= 0 ~__return_2112~0) (<= ~__tmp_5386_0~0 0) (<= ~__return_1363~0 0) (<= 0 ~__return_1143~0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~61#1|) (= ~__return_3412~0 0) (<= ~__tmp_4895_0~0 0) (<= 0 ~__tmp_3599_0~0) (<= 0 ~__tmp_2007_0~0) (<= ~__tmp_2250_0~0 0) (<= |ULTIMATE.start_main_~check__tmp~69#1| 1) (= ~__return_1453~0 0) (<= 0 ~__tmp_2097_0~0) (<= 1 |ULTIMATE.start_main_~init__tmp~0#1|) (= ~__return_3298~0 0) (<= 0 ~__tmp_1983_0~0) (<= ~__return_1503~0 0) (= |#NULL.base| 0) (<= 0 ~__tmp_1995_0~0) (= ~__return_1283~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (<= 0 ~__return_1163~0))' at error location [2022-12-14 12:19:44,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:19:44,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:19:44,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 24] total 62 [2022-12-14 12:19:44,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551547034] [2022-12-14 12:19:44,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:19:44,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-14 12:19:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:19:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-14 12:19:44,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1883, Invalid=11689, Unknown=0, NotChecked=0, Total=13572 [2022-12-14 12:19:44,925 INFO L87 Difference]: Start difference. First operand 9228 states and 11763 transitions. Second operand has 62 states, 62 states have (on average 3.9193548387096775) internal successors, (243), 62 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)