./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/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_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/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_d6653bd3-651e-482d-a078-17e0f3cda33b/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 52ea16d32fee186339e754b295bffdbf40567dcb9eb1871e1f81ccc6c9f03c9b --- 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 06:08:37,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:08:37,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:08:37,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:08:37,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:08:37,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:08:37,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:08:37,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:08:37,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:08:37,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:08:37,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:08:37,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:08:37,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:08:37,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:08:37,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:08:37,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:08:37,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:08:37,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:08:37,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:08:37,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:08:37,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:08:37,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:08:37,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:08:37,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:08:37,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:08:37,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:08:37,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:08:37,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:08:37,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:08:37,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:08:37,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:08:37,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:08:37,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:08:37,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:08:37,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:08:37,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:08:37,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:08:37,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:08:37,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:08:37,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:08:37,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:08:37,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:08:37,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:08:37,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:08:37,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:08:37,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:08:37,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:08:37,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:08:37,440 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:08:37,440 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:08:37,440 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:08:37,441 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:08:37,441 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:08:37,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:08:37,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:08:37,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:08:37,442 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:08:37,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:08:37,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:08:37,442 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:08:37,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:08:37,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:08:37,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:08:37,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:08:37,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:08:37,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:08:37,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:08:37,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:08:37,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:08:37,445 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:08:37,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:08:37,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:08:37,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:08:37,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:08:37,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:08:37,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:08:37,446 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_d6653bd3-651e-482d-a078-17e0f3cda33b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ea16d32fee186339e754b295bffdbf40567dcb9eb1871e1f81ccc6c9f03c9b [2022-12-14 06:08:37,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:08:37,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:08:37,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:08:37,643 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:08:37,643 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:08:37,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 06:08:40,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:08:40,467 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:08:40,468 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 06:08:40,487 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/data/0be695a8a/466ff31185ad4e7aaa3ab7c1594618e2/FLAG2d0ffa084 [2022-12-14 06:08:40,501 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/data/0be695a8a/466ff31185ad4e7aaa3ab7c1594618e2 [2022-12-14 06:08:40,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:08:40,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:08:40,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:08:40,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:08:40,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:08:40,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:08:40" (1/1) ... [2022-12-14 06:08:40,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62abe7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:40, skipping insertion in model container [2022-12-14 06:08:40,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:08:40" (1/1) ... [2022-12-14 06:08:40,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:08:40,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:08:40,815 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7184,7197] [2022-12-14 06:08:40,834 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11285,11298] [2022-12-14 06:08:40,861 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18315,18328] [2022-12-14 06:08:40,883 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24747,24760] [2022-12-14 06:08:40,944 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43722,43735] [2022-12-14 06:08:41,007 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71504,71517] [2022-12-14 06:08:41,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:08:41,135 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:08:41,158 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7184,7197] [2022-12-14 06:08:41,170 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11285,11298] [2022-12-14 06:08:41,188 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18315,18328] [2022-12-14 06:08:41,199 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24747,24760] [2022-12-14 06:08:41,228 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43722,43735] [2022-12-14 06:08:41,268 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_d6653bd3-651e-482d-a078-17e0f3cda33b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71504,71517] [2022-12-14 06:08:41,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:08:41,355 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:08:41,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41 WrapperNode [2022-12-14 06:08:41,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:08:41,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:08:41,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:08:41,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:08:41,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,453 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5623 [2022-12-14 06:08:41,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:08:41,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:08:41,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:08:41,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:08:41,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,510 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:08:41,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:08:41,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:08:41,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:08:41,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (1/1) ... [2022-12-14 06:08:41,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:08:41,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:08:41,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:08:41,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:08:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:08:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:08:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:08:41,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:08:41,743 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:08:41,744 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:08:43,560 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:08:43,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:08:43,906 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:08:43,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:08:43 BoogieIcfgContainer [2022-12-14 06:08:43,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:08:43,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:08:43,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:08:43,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:08:43,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:08:40" (1/3) ... [2022-12-14 06:08:43,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e02871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:08:43, skipping insertion in model container [2022-12-14 06:08:43,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:08:41" (2/3) ... [2022-12-14 06:08:43,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e02871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:08:43, skipping insertion in model container [2022-12-14 06:08:43,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:08:43" (3/3) ... [2022-12-14 06:08:43,925 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 06:08:43,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:08:43,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 06:08:44,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:08:44,007 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;@206d1c31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:08:44,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 06:08:44,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 1176 states, 1169 states have (on average 1.8092386655260906) internal successors, (2115), 1175 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 06:08:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 06:08:44,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:44,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:08:44,030 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 06:08:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:44,034 INFO L85 PathProgramCache]: Analyzing trace with hash 966667412, now seen corresponding path program 1 times [2022-12-14 06:08:44,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:44,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766293057] [2022-12-14 06:08:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:44,384 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 06:08:44,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:44,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766293057] [2022-12-14 06:08:44,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766293057] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:44,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:44,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:08:44,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909406271] [2022-12-14 06:08:44,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:44,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:08:44,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:08:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:08:44,417 INFO L87 Difference]: Start difference. First operand has 1176 states, 1169 states have (on average 1.8092386655260906) internal successors, (2115), 1175 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:45,635 INFO L93 Difference]: Finished difference Result 2258 states and 3962 transitions. [2022-12-14 06:08:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:08:45,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-14 06:08:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:45,656 INFO L225 Difference]: With dead ends: 2258 [2022-12-14 06:08:45,656 INFO L226 Difference]: Without dead ends: 1414 [2022-12-14 06:08:45,662 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 06:08:45,665 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 6426 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6426 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:45,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6426 Valid, 1331 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 06:08:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-12-14 06:08:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1408. [2022-12-14 06:08:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1402 states have (on average 1.3195435092724679) internal successors, (1850), 1407 states have internal predecessors, (1850), 0 states have call successors, (0), 0 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 06:08:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1850 transitions. [2022-12-14 06:08:45,744 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1850 transitions. Word has length 50 [2022-12-14 06:08:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:45,744 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 1850 transitions. [2022-12-14 06:08:45,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1850 transitions. [2022-12-14 06:08:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 06:08:45,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:45,747 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 06:08:45,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:08:45,747 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 06:08:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1129412729, now seen corresponding path program 1 times [2022-12-14 06:08:45,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:45,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894346260] [2022-12-14 06:08:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:45,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:08:45,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:45,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894346260] [2022-12-14 06:08:45,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894346260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:45,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:45,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:08:45,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259247873] [2022-12-14 06:08:45,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:45,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:08:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:08:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:08:45,868 INFO L87 Difference]: Start difference. First operand 1408 states and 1850 transitions. 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 06:08:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:46,694 INFO L93 Difference]: Finished difference Result 2822 states and 3735 transitions. [2022-12-14 06:08:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:08:46,695 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 06:08:46,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:46,701 INFO L225 Difference]: With dead ends: 2822 [2022-12-14 06:08:46,701 INFO L226 Difference]: Without dead ends: 1946 [2022-12-14 06:08:46,702 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 06:08:46,703 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 4436 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:46,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 839 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 06:08:46,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2022-12-14 06:08:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1934. [2022-12-14 06:08:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1928 states have (on average 1.329356846473029) internal successors, (2563), 1933 states have internal predecessors, (2563), 0 states have call successors, (0), 0 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 06:08:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2563 transitions. [2022-12-14 06:08:46,759 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2563 transitions. Word has length 51 [2022-12-14 06:08:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:46,759 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 2563 transitions. [2022-12-14 06:08:46,759 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 06:08:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2563 transitions. [2022-12-14 06:08:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 06:08:46,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:46,761 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 06:08:46,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:08:46,761 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 06:08:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1240611768, now seen corresponding path program 1 times [2022-12-14 06:08:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:46,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788888138] [2022-12-14 06:08:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:46,843 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 06:08:46,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:46,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788888138] [2022-12-14 06:08:46,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788888138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:46,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:46,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:08:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500760522] [2022-12-14 06:08:46,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:46,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:08:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:46,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:08:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:08:46,846 INFO L87 Difference]: Start difference. First operand 1934 states and 2563 transitions. 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 06:08:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:47,677 INFO L93 Difference]: Finished difference Result 3907 states and 5217 transitions. [2022-12-14 06:08:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:08:47,677 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 06:08:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:47,685 INFO L225 Difference]: With dead ends: 3907 [2022-12-14 06:08:47,685 INFO L226 Difference]: Without dead ends: 2620 [2022-12-14 06:08:47,688 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 06:08:47,689 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 3827 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:47,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 731 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:08:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2022-12-14 06:08:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2610. [2022-12-14 06:08:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2604 states have (on average 1.3198924731182795) internal successors, (3437), 2609 states have internal predecessors, (3437), 0 states have call successors, (0), 0 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 06:08:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3437 transitions. [2022-12-14 06:08:47,787 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3437 transitions. Word has length 51 [2022-12-14 06:08:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:47,787 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3437 transitions. [2022-12-14 06:08:47,787 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 06:08:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3437 transitions. [2022-12-14 06:08:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 06:08:47,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:47,789 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 06:08:47,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:08:47,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:08:47,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash -40243798, now seen corresponding path program 1 times [2022-12-14 06:08:47,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:47,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980320781] [2022-12-14 06:08:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:47,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:48,056 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 06:08:48,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:48,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980320781] [2022-12-14 06:08:48,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980320781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:48,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:48,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:08:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847308339] [2022-12-14 06:08:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:08:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:08:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:08:48,059 INFO L87 Difference]: Start difference. First operand 2610 states and 3437 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 06:08:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:50,071 INFO L93 Difference]: Finished difference Result 4832 states and 6457 transitions. [2022-12-14 06:08:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:08:50,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 06:08:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:50,087 INFO L225 Difference]: With dead ends: 4832 [2022-12-14 06:08:50,087 INFO L226 Difference]: Without dead ends: 4459 [2022-12-14 06:08:50,089 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 06:08:50,089 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 2556 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 3759 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 3819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:50,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 3146 Invalid, 3819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3759 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 06:08:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2022-12-14 06:08:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 2610. [2022-12-14 06:08:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2604 states have (on average 1.3195084485407067) internal successors, (3436), 2609 states have internal predecessors, (3436), 0 states have call successors, (0), 0 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 06:08:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3436 transitions. [2022-12-14 06:08:50,222 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3436 transitions. Word has length 52 [2022-12-14 06:08:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:50,222 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3436 transitions. [2022-12-14 06:08:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 06:08:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3436 transitions. [2022-12-14 06:08:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 06:08:50,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:50,225 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 06:08:50,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:08:50,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:08:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:50,226 INFO L85 PathProgramCache]: Analyzing trace with hash -185533245, now seen corresponding path program 1 times [2022-12-14 06:08:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:50,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511250027] [2022-12-14 06:08:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:50,426 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 06:08:50,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:50,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511250027] [2022-12-14 06:08:50,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511250027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:50,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:50,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:08:50,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056128290] [2022-12-14 06:08:50,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:50,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:08:50,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:08:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:08:50,429 INFO L87 Difference]: Start difference. First operand 2610 states and 3436 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 06:08:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:51,921 INFO L93 Difference]: Finished difference Result 3752 states and 4955 transitions. [2022-12-14 06:08:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:08:51,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 06:08:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:51,928 INFO L225 Difference]: With dead ends: 3752 [2022-12-14 06:08:51,928 INFO L226 Difference]: Without dead ends: 3747 [2022-12-14 06:08:51,929 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 06:08:51,929 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 2310 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:51,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 2909 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 06:08:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2022-12-14 06:08:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2610. [2022-12-14 06:08:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2604 states have (on average 1.3191244239631337) internal successors, (3435), 2609 states have internal predecessors, (3435), 0 states have call successors, (0), 0 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 06:08:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3435 transitions. [2022-12-14 06:08:52,095 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3435 transitions. Word has length 52 [2022-12-14 06:08:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:52,096 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3435 transitions. [2022-12-14 06:08:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 06:08:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3435 transitions. [2022-12-14 06:08:52,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 06:08:52,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:52,099 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 06:08:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:08:52,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:08:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1651109861, now seen corresponding path program 1 times [2022-12-14 06:08:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:52,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271117163] [2022-12-14 06:08:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:52,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:52,262 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 06:08:52,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:52,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271117163] [2022-12-14 06:08:52,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271117163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:52,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:52,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:08:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210958029] [2022-12-14 06:08:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:52,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:08:52,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:08:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:08:52,264 INFO L87 Difference]: Start difference. First operand 2610 states and 3435 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 06:08:53,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:53,563 INFO L93 Difference]: Finished difference Result 4092 states and 5490 transitions. [2022-12-14 06:08:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:08:53,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 06:08:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:53,569 INFO L225 Difference]: With dead ends: 4092 [2022-12-14 06:08:53,569 INFO L226 Difference]: Without dead ends: 3621 [2022-12-14 06:08:53,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:08:53,571 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 3444 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:53,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3444 Valid, 2352 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 06:08:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2022-12-14 06:08:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 2610. [2022-12-14 06:08:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2604 states have (on average 1.3187403993855606) internal successors, (3434), 2609 states have internal predecessors, (3434), 0 states have call successors, (0), 0 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 06:08:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3434 transitions. [2022-12-14 06:08:53,711 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3434 transitions. Word has length 52 [2022-12-14 06:08:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:53,711 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3434 transitions. [2022-12-14 06:08:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 06:08:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3434 transitions. [2022-12-14 06:08:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 06:08:53,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:53,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:08:53,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:08:53,714 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 06:08:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:53,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1538413769, now seen corresponding path program 1 times [2022-12-14 06:08:53,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:53,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638229096] [2022-12-14 06:08:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:53,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:53,755 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 06:08:53,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:53,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638229096] [2022-12-14 06:08:53,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638229096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:53,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:53,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:08:53,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108572980] [2022-12-14 06:08:53,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:53,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:08:53,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:53,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:08:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:08:53,757 INFO L87 Difference]: Start difference. First operand 2610 states and 3434 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:54,034 INFO L93 Difference]: Finished difference Result 3230 states and 4323 transitions. [2022-12-14 06:08:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:08:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 06:08:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:54,039 INFO L225 Difference]: With dead ends: 3230 [2022-12-14 06:08:54,039 INFO L226 Difference]: Without dead ends: 2545 [2022-12-14 06:08:54,040 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 06:08:54,041 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 473 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:54,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1537 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:08:54,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2022-12-14 06:08:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2543. [2022-12-14 06:08:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2537 states have (on average 1.317303902246748) internal successors, (3342), 2542 states have internal predecessors, (3342), 0 states have call successors, (0), 0 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 06:08:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3342 transitions. [2022-12-14 06:08:54,216 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3342 transitions. Word has length 53 [2022-12-14 06:08:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:54,216 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 3342 transitions. [2022-12-14 06:08:54,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3342 transitions. [2022-12-14 06:08:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 06:08:54,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:54,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:08:54,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:08:54,218 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 06:08:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash -651733059, now seen corresponding path program 1 times [2022-12-14 06:08:54,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:54,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639555715] [2022-12-14 06:08:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:54,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:54,277 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 06:08:54,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:54,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639555715] [2022-12-14 06:08:54,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639555715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:54,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:54,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:08:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471200045] [2022-12-14 06:08:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:54,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:08:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:08:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:08:54,280 INFO L87 Difference]: Start difference. First operand 2543 states and 3342 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:54,603 INFO L93 Difference]: Finished difference Result 3576 states and 4836 transitions. [2022-12-14 06:08:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:08:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 06:08:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:54,610 INFO L225 Difference]: With dead ends: 3576 [2022-12-14 06:08:54,610 INFO L226 Difference]: Without dead ends: 2713 [2022-12-14 06:08:54,611 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 06:08:54,611 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 485 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:54,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1500 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:08:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-12-14 06:08:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2022-12-14 06:08:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2705 states have (on average 1.333456561922366) internal successors, (3607), 2710 states have internal predecessors, (3607), 0 states have call successors, (0), 0 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 06:08:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3607 transitions. [2022-12-14 06:08:54,841 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3607 transitions. Word has length 53 [2022-12-14 06:08:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:54,841 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3607 transitions. [2022-12-14 06:08:54,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3607 transitions. [2022-12-14 06:08:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 06:08:54,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:54,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:08:54,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:08:54,844 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 06:08:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash 408369717, now seen corresponding path program 1 times [2022-12-14 06:08:54,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:54,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051347514] [2022-12-14 06:08:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:54,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:54,895 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 06:08:54,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:54,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051347514] [2022-12-14 06:08:54,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051347514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:54,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:54,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:08:54,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857893692] [2022-12-14 06:08:54,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:54,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:08:54,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:54,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:08:54,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:08:54,897 INFO L87 Difference]: Start difference. First operand 2711 states and 3607 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:55,397 INFO L93 Difference]: Finished difference Result 5492 states and 7466 transitions. [2022-12-14 06:08:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:08:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 06:08:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:55,404 INFO L225 Difference]: With dead ends: 5492 [2022-12-14 06:08:55,404 INFO L226 Difference]: Without dead ends: 3755 [2022-12-14 06:08:55,405 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 06:08:55,406 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 542 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:55,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1694 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:08:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2022-12-14 06:08:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3749. [2022-12-14 06:08:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3749 states, 3743 states have (on average 1.3299492385786802) internal successors, (4978), 3748 states have internal predecessors, (4978), 0 states have call successors, (0), 0 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 06:08:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 4978 transitions. [2022-12-14 06:08:55,753 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 4978 transitions. Word has length 53 [2022-12-14 06:08:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:55,753 INFO L495 AbstractCegarLoop]: Abstraction has 3749 states and 4978 transitions. [2022-12-14 06:08:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:08:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 4978 transitions. [2022-12-14 06:08:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 06:08:55,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:55,755 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 06:08:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:08:55,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:08:55,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash 888209781, now seen corresponding path program 1 times [2022-12-14 06:08:55,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:55,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756051600] [2022-12-14 06:08:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:55,790 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 06:08:55,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:55,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756051600] [2022-12-14 06:08:55,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756051600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:55,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:55,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:08:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018958712] [2022-12-14 06:08:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:55,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:08:55,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:08:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:08:55,792 INFO L87 Difference]: Start difference. First operand 3749 states and 4978 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:56,435 INFO L93 Difference]: Finished difference Result 6645 states and 8916 transitions. [2022-12-14 06:08:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:08:56,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:56,443 INFO L225 Difference]: With dead ends: 6645 [2022-12-14 06:08:56,444 INFO L226 Difference]: Without dead ends: 3766 [2022-12-14 06:08:56,446 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 06:08:56,447 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 739 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:56,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1087 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:08:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2022-12-14 06:08:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3041. [2022-12-14 06:08:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 3036 states have (on average 1.3346508563899868) internal successors, (4052), 3040 states have internal predecessors, (4052), 0 states have call successors, (0), 0 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 06:08:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4052 transitions. [2022-12-14 06:08:56,773 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4052 transitions. Word has length 54 [2022-12-14 06:08:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:56,774 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 4052 transitions. [2022-12-14 06:08:56,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4052 transitions. [2022-12-14 06:08:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 06:08:56,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:56,776 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 06:08:56,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:08:56,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:08:56,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash -290391896, now seen corresponding path program 1 times [2022-12-14 06:08:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:56,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350903821] [2022-12-14 06:08:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:56,804 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 06:08:56,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:56,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350903821] [2022-12-14 06:08:56,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350903821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:56,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:56,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:08:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524399715] [2022-12-14 06:08:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:56,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:08:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:08:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:08:56,806 INFO L87 Difference]: Start difference. First operand 3041 states and 4052 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:57,325 INFO L93 Difference]: Finished difference Result 5512 states and 7456 transitions. [2022-12-14 06:08:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:08:57,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:57,330 INFO L225 Difference]: With dead ends: 5512 [2022-12-14 06:08:57,330 INFO L226 Difference]: Without dead ends: 3109 [2022-12-14 06:08:57,332 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 06:08:57,332 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 564 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:57,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 871 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:08:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2022-12-14 06:08:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2537. [2022-12-14 06:08:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2533 states have (on average 1.3359652585866562) internal successors, (3384), 2536 states have internal predecessors, (3384), 0 states have call successors, (0), 0 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 06:08:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3384 transitions. [2022-12-14 06:08:57,669 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3384 transitions. Word has length 54 [2022-12-14 06:08:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:57,670 INFO L495 AbstractCegarLoop]: Abstraction has 2537 states and 3384 transitions. [2022-12-14 06:08:57,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3384 transitions. [2022-12-14 06:08:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 06:08:57,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:57,671 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 06:08:57,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:08:57,672 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:08:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:57,672 INFO L85 PathProgramCache]: Analyzing trace with hash -364061502, now seen corresponding path program 1 times [2022-12-14 06:08:57,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:57,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620719845] [2022-12-14 06:08:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:57,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:57,707 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 06:08:57,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:57,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620719845] [2022-12-14 06:08:57,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620719845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:57,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:57,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:08:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755955025] [2022-12-14 06:08:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:57,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:08:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:08:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:08:57,709 INFO L87 Difference]: Start difference. First operand 2537 states and 3384 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:58,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:08:58,217 INFO L93 Difference]: Finished difference Result 4631 states and 6254 transitions. [2022-12-14 06:08:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:08:58,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:08:58,220 INFO L225 Difference]: With dead ends: 4631 [2022-12-14 06:08:58,221 INFO L226 Difference]: Without dead ends: 2401 [2022-12-14 06:08:58,223 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 06:08:58,223 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 474 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:08:58,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 747 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:08:58,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-12-14 06:08:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2111. [2022-12-14 06:08:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2107 states have (on average 1.3412434741338395) internal successors, (2826), 2110 states have internal predecessors, (2826), 0 states have call successors, (0), 0 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 06:08:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2826 transitions. [2022-12-14 06:08:58,501 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2826 transitions. Word has length 54 [2022-12-14 06:08:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:08:58,501 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 2826 transitions. [2022-12-14 06:08:58,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 06:08:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2826 transitions. [2022-12-14 06:08:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 06:08:58,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:08:58,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:08:58,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 06:08:58,502 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 06:08:58,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:08:58,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1325150352, now seen corresponding path program 1 times [2022-12-14 06:08:58,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:08:58,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037526825] [2022-12-14 06:08:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:08:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:08:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:08:59,150 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 06:08:59,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:08:59,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037526825] [2022-12-14 06:08:59,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037526825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:08:59,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:08:59,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-14 06:08:59,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713082264] [2022-12-14 06:08:59,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:08:59,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 06:08:59,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:08:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 06:08:59,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-12-14 06:08:59,153 INFO L87 Difference]: Start difference. First operand 2111 states and 2826 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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 06:09:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:02,516 INFO L93 Difference]: Finished difference Result 4399 states and 5840 transitions. [2022-12-14 06:09:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 06:09:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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 06:09:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:02,520 INFO L225 Difference]: With dead ends: 4399 [2022-12-14 06:09:02,521 INFO L226 Difference]: Without dead ends: 4395 [2022-12-14 06:09:02,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 06:09:02,522 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 4401 mSDsluCounter, 5489 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 6109 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:02,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4401 Valid, 6109 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 06:09:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2022-12-14 06:09:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 2123. [2022-12-14 06:09:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2119 states have (on average 1.341670599339311) internal successors, (2843), 2122 states have internal predecessors, (2843), 0 states have call successors, (0), 0 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 06:09:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2843 transitions. [2022-12-14 06:09:02,862 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2843 transitions. Word has length 55 [2022-12-14 06:09:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:02,862 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 2843 transitions. [2022-12-14 06:09:02,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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 06:09:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2843 transitions. [2022-12-14 06:09:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 06:09:02,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:02,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:02,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:09:02,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:09:02,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -548611186, now seen corresponding path program 1 times [2022-12-14 06:09:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:02,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365540187] [2022-12-14 06:09:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:03,165 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 06:09:03,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:03,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365540187] [2022-12-14 06:09:03,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365540187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:03,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:03,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 06:09:03,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101619097] [2022-12-14 06:09:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:03,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 06:09:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 06:09:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:09:03,167 INFO L87 Difference]: Start difference. First operand 2123 states and 2843 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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 06:09:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:05,123 INFO L93 Difference]: Finished difference Result 4285 states and 5701 transitions. [2022-12-14 06:09:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 06:09:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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 06:09:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:05,130 INFO L225 Difference]: With dead ends: 4285 [2022-12-14 06:09:05,130 INFO L226 Difference]: Without dead ends: 4035 [2022-12-14 06:09:05,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-12-14 06:09:05,132 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 3009 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3009 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:05,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3009 Valid, 2897 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:09:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2022-12-14 06:09:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 2083. [2022-12-14 06:09:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2081 states have (on average 1.3431042767900048) internal successors, (2795), 2082 states have internal predecessors, (2795), 0 states have call successors, (0), 0 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 06:09:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2795 transitions. [2022-12-14 06:09:05,564 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2795 transitions. Word has length 55 [2022-12-14 06:09:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:05,565 INFO L495 AbstractCegarLoop]: Abstraction has 2083 states and 2795 transitions. [2022-12-14 06:09:05,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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 06:09:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2795 transitions. [2022-12-14 06:09:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 06:09:05,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:05,565 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 06:09:05,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 06:09:05,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:09:05,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2003453, now seen corresponding path program 1 times [2022-12-14 06:09:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:05,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550863456] [2022-12-14 06:09:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:06,070 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 06:09:06,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:06,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550863456] [2022-12-14 06:09:06,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550863456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:06,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:06,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-14 06:09:06,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243351487] [2022-12-14 06:09:06,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 06:09:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 06:09:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-12-14 06:09:06,072 INFO L87 Difference]: Start difference. First operand 2083 states and 2795 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 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 06:09:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:08,935 INFO L93 Difference]: Finished difference Result 4461 states and 5935 transitions. [2022-12-14 06:09:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 06:09:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 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 06:09:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:08,941 INFO L225 Difference]: With dead ends: 4461 [2022-12-14 06:09:08,941 INFO L226 Difference]: Without dead ends: 4230 [2022-12-14 06:09:08,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:09:08,942 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 2212 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:08,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 4875 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 06:09:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2022-12-14 06:09:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 2074. [2022-12-14 06:09:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.3424987940183308) internal successors, (2783), 2073 states have internal predecessors, (2783), 0 states have call successors, (0), 0 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 06:09:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2783 transitions. [2022-12-14 06:09:09,437 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2783 transitions. Word has length 56 [2022-12-14 06:09:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:09,437 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 2783 transitions. [2022-12-14 06:09:09,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 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 06:09:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2783 transitions. [2022-12-14 06:09:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 06:09:09,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:09,438 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 06:09:09,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 06:09:09,438 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:09:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2005970313, now seen corresponding path program 1 times [2022-12-14 06:09:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:09,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927370184] [2022-12-14 06:09:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:09,509 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 06:09:09,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:09,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927370184] [2022-12-14 06:09:09,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927370184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:09,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:09,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:09:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020718547] [2022-12-14 06:09:09,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:09,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:09:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:09:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:09,511 INFO L87 Difference]: Start difference. First operand 2074 states and 2783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:09:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:10,402 INFO L93 Difference]: Finished difference Result 4530 states and 6243 transitions. [2022-12-14 06:09:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:09:10,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:09:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:10,406 INFO L225 Difference]: With dead ends: 4530 [2022-12-14 06:09:10,407 INFO L226 Difference]: Without dead ends: 2960 [2022-12-14 06:09:10,408 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 06:09:10,408 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 290 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:10,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 708 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:09:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2022-12-14 06:09:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2696. [2022-12-14 06:09:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2695 states have (on average 1.3454545454545455) internal successors, (3626), 2695 states have internal predecessors, (3626), 0 states have call successors, (0), 0 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 06:09:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3626 transitions. [2022-12-14 06:09:11,076 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3626 transitions. Word has length 58 [2022-12-14 06:09:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:11,077 INFO L495 AbstractCegarLoop]: Abstraction has 2696 states and 3626 transitions. [2022-12-14 06:09:11,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 06:09:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3626 transitions. [2022-12-14 06:09:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 06:09:11,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:11,077 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 06:09:11,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 06:09:11,078 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 06:09:11,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1753133230, now seen corresponding path program 1 times [2022-12-14 06:09:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:11,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711679970] [2022-12-14 06:09:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:11,132 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 06:09:11,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:11,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711679970] [2022-12-14 06:09:11,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711679970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:11,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:11,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:09:11,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020533339] [2022-12-14 06:09:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:11,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:09:11,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:09:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:09:11,134 INFO L87 Difference]: Start difference. First operand 2696 states and 3626 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 06:09:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:11,911 INFO L93 Difference]: Finished difference Result 4622 states and 6289 transitions. [2022-12-14 06:09:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:09:11,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 06:09:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:11,914 INFO L225 Difference]: With dead ends: 4622 [2022-12-14 06:09:11,914 INFO L226 Difference]: Without dead ends: 2420 [2022-12-14 06:09:11,915 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 06:09:11,915 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 630 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:11,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 735 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:09:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-12-14 06:09:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2416. [2022-12-14 06:09:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2415 states have (on average 1.3337474120082815) internal successors, (3221), 2415 states have internal predecessors, (3221), 0 states have call successors, (0), 0 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 06:09:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3221 transitions. [2022-12-14 06:09:12,570 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3221 transitions. Word has length 58 [2022-12-14 06:09:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:12,570 INFO L495 AbstractCegarLoop]: Abstraction has 2416 states and 3221 transitions. [2022-12-14 06:09:12,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 06:09:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3221 transitions. [2022-12-14 06:09:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 06:09:12,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:12,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:12,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 06:09:12,571 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 06:09:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1952606107, now seen corresponding path program 1 times [2022-12-14 06:09:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:12,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088594610] [2022-12-14 06:09:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:12,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:12,623 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 06:09:12,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:12,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088594610] [2022-12-14 06:09:12,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088594610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:12,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:12,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:09:12,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628693222] [2022-12-14 06:09:12,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:12,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:09:12,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:12,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:09:12,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:12,624 INFO L87 Difference]: Start difference. First operand 2416 states and 3221 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:13,814 INFO L93 Difference]: Finished difference Result 5359 states and 7298 transitions. [2022-12-14 06:09:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:09:13,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 06:09:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:13,817 INFO L225 Difference]: With dead ends: 5359 [2022-12-14 06:09:13,818 INFO L226 Difference]: Without dead ends: 3571 [2022-12-14 06:09:13,819 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 06:09:13,819 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 229 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 702 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 06:09:13,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 702 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:09:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2022-12-14 06:09:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 3217. [2022-12-14 06:09:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3216 states have (on average 1.3311567164179106) internal successors, (4281), 3216 states have internal predecessors, (4281), 0 states have call successors, (0), 0 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 06:09:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 4281 transitions. [2022-12-14 06:09:14,724 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 4281 transitions. Word has length 60 [2022-12-14 06:09:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:14,724 INFO L495 AbstractCegarLoop]: Abstraction has 3217 states and 4281 transitions. [2022-12-14 06:09:14,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 4281 transitions. [2022-12-14 06:09:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:09:14,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:14,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:14,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 06:09:14,726 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 06:09:14,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:14,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1916224781, now seen corresponding path program 1 times [2022-12-14 06:09:14,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:14,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265981608] [2022-12-14 06:09:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:14,905 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 06:09:14,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:14,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265981608] [2022-12-14 06:09:14,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265981608] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:14,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:14,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:09:14,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338027151] [2022-12-14 06:09:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:14,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:09:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:09:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:09:14,907 INFO L87 Difference]: Start difference. First operand 3217 states and 4281 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:17,904 INFO L93 Difference]: Finished difference Result 7321 states and 9727 transitions. [2022-12-14 06:09:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 06:09:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:09:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:17,910 INFO L225 Difference]: With dead ends: 7321 [2022-12-14 06:09:17,911 INFO L226 Difference]: Without dead ends: 7319 [2022-12-14 06:09:17,911 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 06:09:17,912 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1988 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:17,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 2368 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:09:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7319 states. [2022-12-14 06:09:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7319 to 3741. [2022-12-14 06:09:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.3245989304812835) internal successors, (4954), 3740 states have internal predecessors, (4954), 0 states have call successors, (0), 0 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 06:09:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4954 transitions. [2022-12-14 06:09:19,152 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4954 transitions. Word has length 64 [2022-12-14 06:09:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:19,152 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 4954 transitions. [2022-12-14 06:09:19,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4954 transitions. [2022-12-14 06:09:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 06:09:19,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:19,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:19,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 06:09:19,154 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 06:09:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1274425590, now seen corresponding path program 1 times [2022-12-14 06:09:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:19,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934808192] [2022-12-14 06:09:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:19,352 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 06:09:19,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:19,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934808192] [2022-12-14 06:09:19,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934808192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:19,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:19,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:09:19,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402479596] [2022-12-14 06:09:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:19,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:09:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:09:19,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:09:19,355 INFO L87 Difference]: Start difference. First operand 3741 states and 4954 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:22,230 INFO L93 Difference]: Finished difference Result 7192 states and 9561 transitions. [2022-12-14 06:09:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:09:22,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-14 06:09:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:22,237 INFO L225 Difference]: With dead ends: 7192 [2022-12-14 06:09:22,237 INFO L226 Difference]: Without dead ends: 7190 [2022-12-14 06:09:22,238 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 06:09:22,238 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1435 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:22,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2287 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:09:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7190 states. [2022-12-14 06:09:23,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7190 to 4033. [2022-12-14 06:09:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4032 states have (on average 1.3211805555555556) internal successors, (5327), 4032 states have internal predecessors, (5327), 0 states have call successors, (0), 0 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 06:09:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5327 transitions. [2022-12-14 06:09:23,638 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5327 transitions. Word has length 70 [2022-12-14 06:09:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:23,638 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 5327 transitions. [2022-12-14 06:09:23,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5327 transitions. [2022-12-14 06:09:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 06:09:23,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:23,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:23,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 06:09:23,640 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 06:09:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2077054338, now seen corresponding path program 1 times [2022-12-14 06:09:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:23,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295451745] [2022-12-14 06:09:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:23,814 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 06:09:23,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:23,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295451745] [2022-12-14 06:09:23,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295451745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:23,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:23,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:09:23,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822011423] [2022-12-14 06:09:23,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:23,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:09:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:23,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:09:23,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:09:23,816 INFO L87 Difference]: Start difference. First operand 4033 states and 5327 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:26,690 INFO L93 Difference]: Finished difference Result 7249 states and 9628 transitions. [2022-12-14 06:09:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:09:26,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-14 06:09:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:26,696 INFO L225 Difference]: With dead ends: 7249 [2022-12-14 06:09:26,696 INFO L226 Difference]: Without dead ends: 7247 [2022-12-14 06:09:26,697 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 06:09:26,698 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1454 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:26,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 2397 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:09:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7247 states. [2022-12-14 06:09:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7247 to 4330. [2022-12-14 06:09:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 4329 states have (on average 1.318087318087318) internal successors, (5706), 4329 states have internal predecessors, (5706), 0 states have call successors, (0), 0 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 06:09:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 5706 transitions. [2022-12-14 06:09:28,314 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 5706 transitions. Word has length 71 [2022-12-14 06:09:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:28,314 INFO L495 AbstractCegarLoop]: Abstraction has 4330 states and 5706 transitions. [2022-12-14 06:09:28,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 5706 transitions. [2022-12-14 06:09:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 06:09:28,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:28,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 06:09:28,315 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 06:09:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash -418638278, now seen corresponding path program 1 times [2022-12-14 06:09:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:28,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243977348] [2022-12-14 06:09:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:28,488 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 06:09:28,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:28,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243977348] [2022-12-14 06:09:28,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243977348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:28,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:28,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:09:28,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99583787] [2022-12-14 06:09:28,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:28,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:09:28,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:09:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:09:28,489 INFO L87 Difference]: Start difference. First operand 4330 states and 5706 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:31,350 INFO L93 Difference]: Finished difference Result 6818 states and 9042 transitions. [2022-12-14 06:09:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 06:09:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-14 06:09:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:31,357 INFO L225 Difference]: With dead ends: 6818 [2022-12-14 06:09:31,357 INFO L226 Difference]: Without dead ends: 6816 [2022-12-14 06:09:31,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-12-14 06:09:31,358 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 1470 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:31,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 2466 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:09:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2022-12-14 06:09:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 4298. [2022-12-14 06:09:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 1.3185943681638352) internal successors, (5666), 4297 states have internal predecessors, (5666), 0 states have call successors, (0), 0 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 06:09:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 5666 transitions. [2022-12-14 06:09:32,977 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 5666 transitions. Word has length 71 [2022-12-14 06:09:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:32,977 INFO L495 AbstractCegarLoop]: Abstraction has 4298 states and 5666 transitions. [2022-12-14 06:09:32,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 5666 transitions. [2022-12-14 06:09:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 06:09:32,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:32,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:32,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 06:09:32,979 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 06:09:32,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash -694926697, now seen corresponding path program 1 times [2022-12-14 06:09:32,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:32,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788468096] [2022-12-14 06:09:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:32,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:33,042 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 06:09:33,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:33,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788468096] [2022-12-14 06:09:33,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788468096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:33,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:33,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:09:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923272252] [2022-12-14 06:09:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:33,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:09:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:09:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:33,043 INFO L87 Difference]: Start difference. First operand 4298 states and 5666 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:35,086 INFO L93 Difference]: Finished difference Result 8166 states and 11002 transitions. [2022-12-14 06:09:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:09:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-12-14 06:09:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:35,091 INFO L225 Difference]: With dead ends: 8166 [2022-12-14 06:09:35,092 INFO L226 Difference]: Without dead ends: 5694 [2022-12-14 06:09:35,093 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 06:09:35,094 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 259 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:35,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 700 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:09:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2022-12-14 06:09:36,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5260. [2022-12-14 06:09:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.3185016162768588) internal successors, (6934), 5259 states have internal predecessors, (6934), 0 states have call successors, (0), 0 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 06:09:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 6934 transitions. [2022-12-14 06:09:36,996 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 6934 transitions. Word has length 72 [2022-12-14 06:09:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:36,996 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 6934 transitions. [2022-12-14 06:09:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 6934 transitions. [2022-12-14 06:09:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 06:09:36,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:36,999 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] [2022-12-14 06:09:36,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 06:09:36,999 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 06:09:36,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash -139990302, now seen corresponding path program 1 times [2022-12-14 06:09:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:37,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767679734] [2022-12-14 06:09:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:37,137 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 06:09:37,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:37,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767679734] [2022-12-14 06:09:37,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767679734] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:37,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:37,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:09:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749850066] [2022-12-14 06:09:37,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:37,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:09:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:09:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:09:37,139 INFO L87 Difference]: Start difference. First operand 5260 states and 6934 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:42,182 INFO L93 Difference]: Finished difference Result 11788 states and 15430 transitions. [2022-12-14 06:09:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 06:09:42,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-12-14 06:09:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:42,191 INFO L225 Difference]: With dead ends: 11788 [2022-12-14 06:09:42,191 INFO L226 Difference]: Without dead ends: 9581 [2022-12-14 06:09:42,193 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 06:09:42,194 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1209 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:42,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1633 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 06:09:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9581 states. [2022-12-14 06:09:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9581 to 5240. [2022-12-14 06:09:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5240 states, 5239 states have (on average 1.3191448749761405) internal successors, (6911), 5239 states have internal predecessors, (6911), 0 states have call successors, (0), 0 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 06:09:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5240 states to 5240 states and 6911 transitions. [2022-12-14 06:09:44,184 INFO L78 Accepts]: Start accepts. Automaton has 5240 states and 6911 transitions. Word has length 72 [2022-12-14 06:09:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:44,184 INFO L495 AbstractCegarLoop]: Abstraction has 5240 states and 6911 transitions. [2022-12-14 06:09:44,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:09:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5240 states and 6911 transitions. [2022-12-14 06:09:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 06:09:44,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:44,185 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] [2022-12-14 06:09:44,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 06:09:44,186 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 06:09:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:44,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1056951882, now seen corresponding path program 1 times [2022-12-14 06:09:44,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:44,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123596255] [2022-12-14 06:09:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:44,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:44,620 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 06:09:44,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123596255] [2022-12-14 06:09:44,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123596255] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:09:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819320443] [2022-12-14 06:09:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:44,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:09:44,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:09:44,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:09:44,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:09:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:44,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-14 06:09:44,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:09:48,135 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 06:09:48,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:09:55,538 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 06:09:55,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819320443] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:09:55,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1813970704] [2022-12-14 06:09:55,554 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 06:09:55,554 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:09:55,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:09:55,560 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:09:55,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:09:55,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:09:55,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:09:55,735 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 06:09:55,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:09:55,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:09:55,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:09:55,766 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 06:09:58,752 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:10:46,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1813970704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:46,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:10:46,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [16, 26, 26] total 103 [2022-12-14 06:10:46,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974256555] [2022-12-14 06:10:46,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:46,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 06:10:46,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 06:10:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1945, Invalid=8561, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 06:10:46,392 INFO L87 Difference]: Start difference. First operand 5240 states and 6911 transitions. Second operand has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 40 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:11:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:11:11,855 INFO L93 Difference]: Finished difference Result 7526 states and 9972 transitions. [2022-12-14 06:11:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 06:11:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 40 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-14 06:11:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:11:11,860 INFO L225 Difference]: With dead ends: 7526 [2022-12-14 06:11:11,860 INFO L226 Difference]: Without dead ends: 5229 [2022-12-14 06:11:11,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5803 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=1945, Invalid=8561, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 06:11:11,864 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 9 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 9806 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 9809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:11:11,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 773 Invalid, 9809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9806 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time] [2022-12-14 06:11:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2022-12-14 06:11:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 5229. [2022-12-14 06:11:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 1.3186687069625096) internal successors, (6894), 5228 states have internal predecessors, (6894), 0 states have call successors, (0), 0 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 06:11:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 6894 transitions. [2022-12-14 06:11:13,886 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 6894 transitions. Word has length 73 [2022-12-14 06:11:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:11:13,886 INFO L495 AbstractCegarLoop]: Abstraction has 5229 states and 6894 transitions. [2022-12-14 06:11:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 40 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:11:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 6894 transitions. [2022-12-14 06:11:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 06:11:13,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:11:13,887 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] [2022-12-14 06:11:13,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:11:14,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:11:14,089 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 06:11:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:11:14,091 INFO L85 PathProgramCache]: Analyzing trace with hash 791104139, now seen corresponding path program 1 times [2022-12-14 06:11:14,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:11:14,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276139631] [2022-12-14 06:11:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:14,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:11:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:14,602 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 06:11:14,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:11:14,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276139631] [2022-12-14 06:11:14,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276139631] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:11:14,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362621826] [2022-12-14 06:11:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:14,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:11:14,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:11:14,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:11:14,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:11:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:14,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 06:11:14,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:11:14,907 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 06:11:14,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:11:14,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362621826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:11:14,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:11:14,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 22 [2022-12-14 06:11:14,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285096337] [2022-12-14 06:11:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:11:14,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:11:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:11:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:11:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-12-14 06:11:14,908 INFO L87 Difference]: Start difference. First operand 5229 states and 6894 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:11:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:11:18,501 INFO L93 Difference]: Finished difference Result 9330 states and 12316 transitions. [2022-12-14 06:11:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:11:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-14 06:11:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:11:18,507 INFO L225 Difference]: With dead ends: 9330 [2022-12-14 06:11:18,508 INFO L226 Difference]: Without dead ends: 7130 [2022-12-14 06:11:18,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-12-14 06:11:18,510 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 830 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:11:18,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1091 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:11:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2022-12-14 06:11:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 5211. [2022-12-14 06:11:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 1.3193857965451055) internal successors, (6874), 5210 states have internal predecessors, (6874), 0 states have call successors, (0), 0 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 06:11:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 6874 transitions. [2022-12-14 06:11:20,601 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 6874 transitions. Word has length 73 [2022-12-14 06:11:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:11:20,601 INFO L495 AbstractCegarLoop]: Abstraction has 5211 states and 6874 transitions. [2022-12-14 06:11:20,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:11:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 6874 transitions. [2022-12-14 06:11:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 06:11:20,603 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:11:20,603 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] [2022-12-14 06:11:20,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 06:11:20,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 06:11:20,805 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 06:11:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:11:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -928924485, now seen corresponding path program 1 times [2022-12-14 06:11:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:11:20,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860319802] [2022-12-14 06:11:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:20,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:11:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:21,352 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 06:11:21,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:11:21,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860319802] [2022-12-14 06:11:21,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860319802] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:11:21,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737062413] [2022-12-14 06:11:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:21,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:11:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:11:21,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:11:21,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:11:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:21,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 06:11:21,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:11:21,624 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 06:11:21,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:11:21,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737062413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:11:21,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:11:21,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2022-12-14 06:11:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203854889] [2022-12-14 06:11:21,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:11:21,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:11:21,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:11:21,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:11:21,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-12-14 06:11:21,625 INFO L87 Difference]: Start difference. First operand 5211 states and 6874 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:11:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:11:25,061 INFO L93 Difference]: Finished difference Result 8766 states and 11560 transitions. [2022-12-14 06:11:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:11:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-14 06:11:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:11:25,067 INFO L225 Difference]: With dead ends: 8766 [2022-12-14 06:11:25,067 INFO L226 Difference]: Without dead ends: 6564 [2022-12-14 06:11:25,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-12-14 06:11:25,069 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 1559 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 753 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 06:11:25,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 753 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:11:25,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6564 states. [2022-12-14 06:11:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6564 to 5199. [2022-12-14 06:11:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 1.3199307425933051) internal successors, (6861), 5198 states have internal predecessors, (6861), 0 states have call successors, (0), 0 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 06:11:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6861 transitions. [2022-12-14 06:11:27,230 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6861 transitions. Word has length 73 [2022-12-14 06:11:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:11:27,230 INFO L495 AbstractCegarLoop]: Abstraction has 5199 states and 6861 transitions. [2022-12-14 06:11:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:11:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6861 transitions. [2022-12-14 06:11:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 06:11:27,232 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:11:27,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:11:27,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:11:27,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 06:11:27,433 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 06:11:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:11:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1151300437, now seen corresponding path program 1 times [2022-12-14 06:11:27,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:11:27,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124203561] [2022-12-14 06:11:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:11:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:27,951 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 06:11:27,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:11:27,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124203561] [2022-12-14 06:11:27,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124203561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:11:27,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108903072] [2022-12-14 06:11:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:27,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:11:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:11:27,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:11:27,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:11:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:28,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-14 06:11:28,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:11:30,888 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 06:11:30,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:11:41,583 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 06:11:41,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108903072] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:11:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1673385881] [2022-12-14 06:11:41,585 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-12-14 06:11:41,585 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:11:41,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:11:41,586 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:11:41,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:11:41,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:11:41,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:11:41,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:11:41,677 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 06:11:41,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:11:41,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:11:41,700 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 06:11:46,903 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:12:39,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1673385881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:12:39,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:12:39,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [16, 26, 26] total 105 [2022-12-14 06:12:39,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578537731] [2022-12-14 06:12:39,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:12:39,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 06:12:39,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:12:39,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 06:12:39,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1949, Invalid=8971, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 06:12:39,137 INFO L87 Difference]: Start difference. First operand 5199 states and 6861 transitions. Second operand has 43 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 42 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:13:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:13:08,374 INFO L93 Difference]: Finished difference Result 7490 states and 9931 transitions. [2022-12-14 06:13:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 06:13:08,375 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 42 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 06:13:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:13:08,379 INFO L225 Difference]: With dead ends: 7490 [2022-12-14 06:13:08,379 INFO L226 Difference]: Without dead ends: 5203 [2022-12-14 06:13:08,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 122 SyntacticMatches, 13 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6337 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=1949, Invalid=8971, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 06:13:08,382 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 8 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 10702 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 10706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:13:08,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 698 Invalid, 10706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10702 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time] [2022-12-14 06:13:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2022-12-14 06:13:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5202. [2022-12-14 06:13:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 5201 states have (on average 1.3195539319361662) internal successors, (6863), 5201 states have internal predecessors, (6863), 0 states have call successors, (0), 0 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 06:13:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 6863 transitions. [2022-12-14 06:13:10,533 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 6863 transitions. Word has length 74 [2022-12-14 06:13:10,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:13:10,533 INFO L495 AbstractCegarLoop]: Abstraction has 5202 states and 6863 transitions. [2022-12-14 06:13:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 42 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:13:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 6863 transitions. [2022-12-14 06:13:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 06:13:10,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:13:10,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:13:10,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:13:10,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 06:13:10,737 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 06:13:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:13:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1909816868, now seen corresponding path program 1 times [2022-12-14 06:13:10,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:13:10,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61163975] [2022-12-14 06:13:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:13:10,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:13:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:13:11,231 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 06:13:11,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:13:11,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61163975] [2022-12-14 06:13:11,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61163975] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:13:11,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321364205] [2022-12-14 06:13:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:13:11,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:13:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:13:11,232 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:13:11,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:13:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:13:11,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 06:13:11,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:13:12,567 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 06:13:12,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:13:17,896 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 06:13:17,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321364205] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:13:17,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626417994] [2022-12-14 06:13:17,899 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-12-14 06:13:17,899 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:13:17,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:13:17,899 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:13:17,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:13:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:13:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:13:18,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:13:18,012 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 06:13:18,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:13:18,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:13:18,031 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 06:13:20,538 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:13:59,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1626417994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:13:59,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:13:59,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [16, 16, 17] total 75 [2022-12-14 06:13:59,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815140618] [2022-12-14 06:13:59,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:13:59,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 06:13:59,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:13:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 06:13:59,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=979, Invalid=4571, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 06:13:59,839 INFO L87 Difference]: Start difference. First operand 5202 states and 6863 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:14:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:14:19,807 INFO L93 Difference]: Finished difference Result 7486 states and 9922 transitions. [2022-12-14 06:14:19,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 06:14:19,808 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 06:14:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:14:19,812 INFO L225 Difference]: With dead ends: 7486 [2022-12-14 06:14:19,812 INFO L226 Difference]: Without dead ends: 5188 [2022-12-14 06:14:19,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 155 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2967 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=979, Invalid=4571, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 06:14:19,815 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 8 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 7172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 7173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:14:19,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 586 Invalid, 7173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7172 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2022-12-14 06:14:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2022-12-14 06:14:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5188. [2022-12-14 06:14:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 5187 states have (on average 1.320030846346636) internal successors, (6847), 5187 states have internal predecessors, (6847), 0 states have call successors, (0), 0 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 06:14:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6847 transitions. [2022-12-14 06:14:22,040 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6847 transitions. Word has length 74 [2022-12-14 06:14:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:14:22,040 INFO L495 AbstractCegarLoop]: Abstraction has 5188 states and 6847 transitions. [2022-12-14 06:14:22,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:14:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6847 transitions. [2022-12-14 06:14:22,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 06:14:22,041 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:14:22,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:14:22,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 06:14:22,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 06:14:22,243 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 06:14:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:14:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1419984925, now seen corresponding path program 1 times [2022-12-14 06:14:22,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:14:22,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471813797] [2022-12-14 06:14:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:14:22,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:14:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:14:22,804 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 06:14:22,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:14:22,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471813797] [2022-12-14 06:14:22,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471813797] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:14:22,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858242337] [2022-12-14 06:14:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:14:22,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:14:22,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:14:22,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:14:22,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 06:14:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:14:22,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-14 06:14:22,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:14:25,714 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 06:14:25,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:14:37,161 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 06:14:37,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858242337] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:14:37,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [790206392] [2022-12-14 06:14:37,164 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-12-14 06:14:37,164 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:14:37,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:14:37,165 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:14:37,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:14:37,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:14:37,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:14:37,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:14:37,383 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 06:14:37,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:14:37,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:14:37,426 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 06:14:50,456 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:16:10,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '410913#(and (= ~__return_1880~0 0) (= ~__return_1154~0 0) (= ~__return_1414~0 0) (<= ~send3~0 127) (<= 0 ~id3~0) (<= (+ |ULTIMATE.start_main_~node1__m1~64#1| 1) 0) (<= 0 (+ ~p3_new~0 1)) (= ~__return_4505~0 0) (= ~__return_1384~0 0) (= ~__return_1294~0 0) (<= 1 ~__return_103~0) (= ~__return_2816~0 0) (<= ~st3~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~42#1| 1) 0) (= ~__return_2729~0 0) (<= 0 ~mode1~0) (= ~__return_1264~0 0) (= ~__return_4311~0 0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1| 127) (= ~__return_1534~0 0) (= ~__return_2202~0 0) (= ~__return_1967~0 0) (= ~__return_3691~0 0) (= ~__return_1234~0 0) (= ~__return_3554~0 0) (= ~__return_1164~0 0) (= ~__return_3134~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~49#1| 1)) (<= 0 ~id1~0) (= ~__return_1334~0 0) (= ~__return_1474~0 0) (= ~__return_1364~0 0) (= ~__return_1214~0 0) (= |ULTIMATE.start_main_~check__tmp~69#1| 1) (= ~p2~0 0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (<= 1 ~r1~0) (<= (+ |ULTIMATE.start_main_~node2__m2~40#1| 1) 0) (= ~__return_1584~0 0) (= ~__return_1274~0 0) (<= 1 ~__return_4659~0) (= ~__return_1544~0 0) (<= ~__return_1524~0 1) (= ~__return_1454~0 0) (<= 0 ~mode3~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~43#1| 1)) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (= ~__return_1504~0 0) (<= ~__return_5121~0 1) (= ~__return_2494~0 0) (<= 0 ~__return_5121~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~20#1| 1)) (<= |ULTIMATE.start_main_~check__tmp~32#1| 1) (= ~__return_1574~0 0) (= ~__return_1174~0 0) (<= ~mode2~0 1) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1|) (<= ~r1~0 257) (= |ULTIMATE.start_main_~check__tmp~67#1| 1) (<= |ULTIMATE.start_main_~assert__arg~68#1| 1) (= ~__return_1124~0 0) (= ~__return_2581~0 0) (<= ~__return_103~0 1) (= ~__return_3443~0 0) (= ~__return_1394~0 0) (= ~__return_2927~0 0) (= ~__return_1254~0 0) (= ~__return_4395~0 0) (<= ~mode3~0 1) (= ~__return_1424~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~66#1|) (= ~__return_1244~0 0) (= ~__return_2028~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~42#1| 1)) (= ~__return_1114~0 0) (= ~__return_1344~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= 0 (+ ~p2_old~0 1)) (= ~__return_1204~0 0) (<= ~id1~0 127) (<= ~__return_4659~0 1) (= ~__return_1484~0 0) (= ~st1~0 0) (<= |ULTIMATE.start_main_~assert__arg~66#1| 1) (= ~__return_2115~0 0) (<= 0 |ULTIMATE.start_main_~check__tmp~32#1|) (= ~__return_1354~0 0) (= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_1184~0 0) (= ~__return_1144~0 0) (<= (+ ~nomsg~0 1) 0) (= ~__return_1554~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~50#1| 1) 0) (<= ~mode1~0 1) (<= |ULTIMATE.start_main_~__tmp_67~0#1| 1) (= ~__return_1194~0 0) (= ~__return_1324~0 0) (<= (+ ~p2_new~0 1) 0) (= ~__return_4743~0 0) (= ~__return_1404~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~64#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~43#1| 1) 0) (<= 1 ~__return_1524~0) (= ~__return_3332~0 0) (= ~__return_1314~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (= ~__return_1134~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~50#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~20#1| 1) 0) (<= 0 |ULTIMATE.start_main_~__tmp_69~0#1|) (<= ~id3~0 127) (= ~__return_1374~0 0) (<= 0 ~id2~0) (= |#NULL.offset| 0) (= ~st2~0 0) (<= 0 (+ ~nomsg~0 1)) (= ~__return_1304~0 0) (= ~__return_1514~0 0) (= ~__return_3245~0 0) (<= 0 ~mode2~0) (= ~__return_1564~0 0) (= ~__return_1444~0 0) (= ~__return_1494~0 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (= ~__return_2642~0 0) (<= 0 ~st3~0) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (<= |ULTIMATE.start_main_~__tmp_69~0#1| 1) (= ~__return_4853~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~68#1|) (= ~__return_1224~0 0) (<= (+ ~p3_new~0 1) 0) (= ~p3~0 0) (= ~__return_1284~0 0) (<= (+ ~p2_old~0 1) 0) (<= 0 (+ ~p1_new~0 1)) (= ~__return_1434~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~49#1| 1) 0) (<= 0 ~send3~0) (= ~p1~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~__tmp_67~0#1|) (<= 0 |ULTIMATE.start_main_~main__c1~0#1|) (= ~__return_1464~0 0) (= ~__return_main~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~40#1| 1)) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= |ULTIMATE.start_main_~main__i2~0#1| 0) (= ~__return_2313~0 0))' at error location [2022-12-14 06:16:10,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:16:10,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:16:10,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 22] total 60 [2022-12-14 06:16:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677312812] [2022-12-14 06:16:10,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:16:10,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-14 06:16:10,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:10,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-14 06:16:10,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1634, Invalid=9708, Unknown=0, NotChecked=0, Total=11342 [2022-12-14 06:16:10,176 INFO L87 Difference]: Start difference. First operand 5188 states and 6847 transitions. Second operand has 60 states, 60 states have (on average 3.65) internal successors, (219), 60 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:17:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:17:14,839 INFO L93 Difference]: Finished difference Result 26306 states and 35236 transitions. [2022-12-14 06:17:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-12-14 06:17:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.65) internal successors, (219), 60 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 06:17:14,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:17:14,863 INFO L225 Difference]: With dead ends: 26306 [2022-12-14 06:17:14,863 INFO L226 Difference]: Without dead ends: 24017 [2022-12-14 06:17:14,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 119 SyntacticMatches, 15 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30639 ImplicationChecksByTransitivity, 122.3s TimeCoverageRelationStatistics Valid=8070, Invalid=61890, Unknown=0, NotChecked=0, Total=69960 [2022-12-14 06:17:14,891 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 7971 mSDsluCounter, 5228 mSDsCounter, 0 mSdLazyCounter, 7673 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7971 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 8090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 7673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:17:14,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7971 Valid, 5528 Invalid, 8090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 7673 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-14 06:17:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24017 states. [2022-12-14 06:17:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24017 to 11770. [2022-12-14 06:17:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11770 states, 11769 states have (on average 1.3185487297136544) internal successors, (15518), 11769 states have internal predecessors, (15518), 0 states have call successors, (0), 0 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 06:17:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11770 states to 11770 states and 15518 transitions. [2022-12-14 06:17:22,069 INFO L78 Accepts]: Start accepts. Automaton has 11770 states and 15518 transitions. Word has length 74 [2022-12-14 06:17:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:17:22,069 INFO L495 AbstractCegarLoop]: Abstraction has 11770 states and 15518 transitions. [2022-12-14 06:17:22,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.65) internal successors, (219), 60 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:17:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 11770 states and 15518 transitions. [2022-12-14 06:17:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 06:17:22,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:17:22,071 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] [2022-12-14 06:17:22,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 06:17:22,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:17:22,273 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 06:17:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:17:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1020531031, now seen corresponding path program 1 times [2022-12-14 06:17:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:17:22,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326394940] [2022-12-14 06:17:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:17:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:17:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:17:22,953 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 06:17:22,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:17:22,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326394940] [2022-12-14 06:17:22,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326394940] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:17:22,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721458077] [2022-12-14 06:17:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:17:22,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:17:22,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:17:22,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:17:22,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 06:17:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:17:23,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 06:17:23,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:17:23,302 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 06:17:23,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:17:23,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721458077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:17:23,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:17:23,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 22 [2022-12-14 06:17:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743877155] [2022-12-14 06:17:23,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:17:23,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:17:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:17:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:17:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-12-14 06:17:23,304 INFO L87 Difference]: Start difference. First operand 11770 states and 15518 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:17:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:17:34,117 INFO L93 Difference]: Finished difference Result 17308 states and 22663 transitions. [2022-12-14 06:17:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:17:34,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-14 06:17:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:17:34,132 INFO L225 Difference]: With dead ends: 17308 [2022-12-14 06:17:34,132 INFO L226 Difference]: Without dead ends: 15300 [2022-12-14 06:17:34,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2022-12-14 06:17:34,136 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1087 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:17:34,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 770 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 06:17:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15300 states. [2022-12-14 06:17:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15300 to 11748. [2022-12-14 06:17:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11748 states, 11747 states have (on average 1.3188048012258449) internal successors, (15492), 11747 states have internal predecessors, (15492), 0 states have call successors, (0), 0 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 06:17:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11748 states to 11748 states and 15492 transitions. [2022-12-14 06:17:41,546 INFO L78 Accepts]: Start accepts. Automaton has 11748 states and 15492 transitions. Word has length 75 [2022-12-14 06:17:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:17:41,546 INFO L495 AbstractCegarLoop]: Abstraction has 11748 states and 15492 transitions. [2022-12-14 06:17:41,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:17:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 11748 states and 15492 transitions. [2022-12-14 06:17:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 06:17:41,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:17:41,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:17:41,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 06:17:41,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:17:41,750 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 06:17:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:17:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash -681602352, now seen corresponding path program 1 times [2022-12-14 06:17:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:17:41,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711323297] [2022-12-14 06:17:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:17:41,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:17:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:17:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 06:17:41,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:17:41,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711323297] [2022-12-14 06:17:41,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711323297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:17:41,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:17:41,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:17:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525868070] [2022-12-14 06:17:41,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:17:41,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:17:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:17:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:17:41,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:17:41,957 INFO L87 Difference]: Start difference. First operand 11748 states and 15492 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:17:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:17:54,780 INFO L93 Difference]: Finished difference Result 18899 states and 24550 transitions. [2022-12-14 06:17:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 06:17:54,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-12-14 06:17:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:17:54,796 INFO L225 Difference]: With dead ends: 18899 [2022-12-14 06:17:54,796 INFO L226 Difference]: Without dead ends: 17042 [2022-12-14 06:17:54,800 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 06:17:54,800 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1453 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:17:54,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1370 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:17:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17042 states. [2022-12-14 06:18:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17042 to 11748. [2022-12-14 06:18:02,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11748 states, 11747 states have (on average 1.3187196731080275) internal successors, (15491), 11747 states have internal predecessors, (15491), 0 states have call successors, (0), 0 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 06:18:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11748 states to 11748 states and 15491 transitions. [2022-12-14 06:18:02,132 INFO L78 Accepts]: Start accepts. Automaton has 11748 states and 15491 transitions. Word has length 76 [2022-12-14 06:18:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:18:02,132 INFO L495 AbstractCegarLoop]: Abstraction has 11748 states and 15491 transitions. [2022-12-14 06:18:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:18:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 11748 states and 15491 transitions. [2022-12-14 06:18:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 06:18:02,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:18:02,134 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] [2022-12-14 06:18:02,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 06:18:02,134 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 06:18:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:18:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1940418117, now seen corresponding path program 1 times [2022-12-14 06:18:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:18:02,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545921832] [2022-12-14 06:18:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:18:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:18:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:18:02,631 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 06:18:02,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:18:02,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545921832] [2022-12-14 06:18:02,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545921832] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:18:02,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575634821] [2022-12-14 06:18:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:18:02,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:18:02,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:18:02,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:18:02,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6653bd3-651e-482d-a078-17e0f3cda33b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 06:18:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:18:02,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 06:18:02,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:18:05,645 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 06:18:05,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:18:16,528 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 06:18:16,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575634821] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:18:16,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913733846] [2022-12-14 06:18:16,530 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 06:18:16,530 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:18:16,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:18:16,530 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:18:16,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:18:16,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:18:16,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:18:16,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:18:16,608 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 06:18:16,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:18:16,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:18:16,643 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 06:18:27,392 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:19:46,459 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '570632#(and (<= 0 |ULTIMATE.start_main_~__tmp_22~0#1|) (= ~__return_1880~0 0) (= ~__return_1154~0 0) (= |ULTIMATE.start_main_~check__tmp~21#1| 1) (= ~__return_1414~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~32#1| 1) 0) (<= 0 ~id3~0) (<= 0 |ULTIMATE.start_main_~assert__arg~49#1|) (<= 0 (+ ~p3_new~0 1)) (= ~__return_4505~0 0) (= ~__return_1384~0 0) (= ~__return_1294~0 0) (<= 1 ~__return_103~0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~13#1|) (= ~__return_2816~0 0) (= |ULTIMATE.start_main_~check__tmp~50#1| 1) (<= ~__return_1374~0 1) (= ~__return_2729~0 0) (<= 0 ~mode1~0) (= ~__return_1264~0 0) (= ~__return_4311~0 0) (= ~__return_1534~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~11#1| 1) 0) (= ~__return_2202~0 0) (= ~__return_1967~0 0) (= ~__return_3691~0 0) (= ~__return_1234~0 0) (= ~__return_3554~0 0) (= ~__return_1164~0 0) (= ~__return_3134~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~32#1| 1)) (<= 0 ~id1~0) (= ~__return_1524~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~45#1| 1)) (= ~__return_1334~0 0) (= ~__return_1474~0 0) (= ~__return_1364~0 0) (= ~__return_1214~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~19#1| 1)) (= ~p2~0 0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (<= 1 ~r1~0) (= ~__return_1584~0 0) (= ~__return_1274~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~19#1| 1) 0) (= ~__return_1544~0 0) (= ~__return_1454~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_50~0#1|) (<= 0 ~mode3~0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (= ~__return_1504~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~21#1|) (<= ~send1~0 127) (<= 1 ~__return_2642~0) (<= ~__return_5121~0 1) (= ~__return_2494~0 0) (<= 0 ~__return_5121~0) (<= |ULTIMATE.start_main_~check__tmp~32#1| 1) (= ~__return_1574~0 0) (<= 0 (+ ~p3_old~0 1)) (= ~__return_4659~0 0) (= ~__return_1174~0 0) (<= 1 ~__return_1374~0) (<= ~__return_2642~0 1) (<= ~mode2~0 1) (<= ~r1~0 257) (= ~__return_1124~0 0) (= ~__return_2581~0 0) (<= ~__return_103~0 1) (= ~__return_3443~0 0) (= ~__return_1394~0 0) (= ~__return_2927~0 0) (= ~__return_1254~0 0) (= ~__return_4395~0 0) (<= ~mode3~0 1) (= ~__return_1424~0 0) (= ~__return_1244~0 0) (= ~__return_2028~0 0) (= ~__return_1114~0 0) (= ~__return_1344~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (= ~__return_1204~0 0) (<= ~id1~0 127) (<= (+ ~p3_old~0 1) 0) (= ~__return_1484~0 0) (= ~st1~0 0) (<= |ULTIMATE.start_main_~__tmp_50~0#1| 1) (= ~__return_2115~0 0) (<= |ULTIMATE.start_main_~assert__arg~49#1| 1) (<= 0 |ULTIMATE.start_main_~check__tmp~32#1|) (= ~__return_1354~0 0) (= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_1184~0 0) (= ~__return_1144~0 0) (<= (+ ~nomsg~0 1) 0) (= ~__return_1554~0 0) (<= ~mode1~0 1) (= ~__return_1194~0 0) (= ~__return_1324~0 0) (<= (+ ~p2_new~0 1) 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~13#1| 127) (= ~__return_4743~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~45#1| 1) 0) (= ~__return_1404~0 0) (<= |ULTIMATE.start_main_~assert__arg~21#1| 1) (= ~__return_3332~0 0) (= ~__return_1314~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (= ~__return_1134~0 0) (<= ~id3~0 127) (<= ~st3~0 1) (<= 0 ~id2~0) (= |#NULL.offset| 0) (= ~st2~0 0) (<= 0 (+ ~nomsg~0 1)) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~37#1| 1)) (= ~__return_1304~0 0) (= ~__return_1514~0 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1| 127) (= ~__return_3245~0 0) (<= 0 ~mode2~0) (= ~__return_1564~0 0) (= ~__return_1444~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~37#1| 1) 0) (= ~__return_1494~0 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (<= |ULTIMATE.start_main_~__tmp_22~0#1| 1) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (= ~__return_4853~0 0) (= ~__return_1224~0 0) (<= (+ ~p3_new~0 1) 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (= ~p3~0 0) (= ~__return_1284~0 0) (<= 0 (+ ~p1_new~0 1)) (= ~__return_1434~0 0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1|) (= ~p1~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 ~send1~0) (<= 0 |ULTIMATE.start_main_~main__c1~0#1|) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (= ~__return_1464~0 0) (= ~__return_main~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~11#1| 1)) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= |ULTIMATE.start_main_~main__i2~0#1| 0) (= ~__return_2313~0 0))' at error location [2022-12-14 06:19:46,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:19:46,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:19:46,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 24] total 61 [2022-12-14 06:19:46,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330123260] [2022-12-14 06:19:46,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:19:46,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-14 06:19:46,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:19:46,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-14 06:19:46,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1997, Invalid=10885, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 06:19:46,461 INFO L87 Difference]: Start difference. First operand 11748 states and 15491 transitions. Second operand has 61 states, 61 states have (on average 3.6885245901639343) internal successors, (225), 61 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)