./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72aca9735a0330ad4ed4e9de4f21904354ce62c742d488d0b09ce6da875c2798 --- 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-b5237d8 [2022-11-21 13:49:03,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:49:03,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:49:03,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:49:03,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:49:03,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:49:03,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:49:03,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:49:03,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:49:03,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:49:03,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:49:03,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:49:03,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:49:03,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:49:03,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:49:03,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:49:03,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:49:03,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:49:03,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:49:03,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:49:03,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:49:03,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:49:03,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:49:03,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:49:03,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:49:03,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:49:03,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:49:03,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:49:03,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:49:03,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:49:03,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:49:03,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:49:03,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:49:03,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:49:03,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:49:03,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:49:03,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:49:03,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:49:03,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:49:03,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:49:03,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:49:03,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:49:03,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:49:03,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:49:03,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:49:03,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:49:03,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:49:03,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:49:03,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:49:03,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:49:03,548 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:49:03,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:49:03,548 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:49:03,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:49:03,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:49:03,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:49:03,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:49:03,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:49:03,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:49:03,550 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:49:03,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:49:03,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:49:03,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:49:03,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:49:03,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:49:03,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:49:03,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:49:03,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:49:03,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:49:03,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:49:03,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:49:03,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:49:03,554 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:49:03,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:49:03,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:49:03,555 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_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72aca9735a0330ad4ed4e9de4f21904354ce62c742d488d0b09ce6da875c2798 [2022-11-21 13:49:03,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:49:03,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:49:03,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:49:03,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:49:03,807 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:49:03,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-21 13:49:07,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:49:07,481 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:49:07,482 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-21 13:49:07,517 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/data/10f409afb/5efb9a6e7ec24f5988cd399bbe60a7af/FLAGbf2a104f3 [2022-11-21 13:49:07,537 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/data/10f409afb/5efb9a6e7ec24f5988cd399bbe60a7af [2022-11-21 13:49:07,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:49:07,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:49:07,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:49:07,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:49:07,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:49:07,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:07" (1/1) ... [2022-11-21 13:49:07,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95dade8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:07, skipping insertion in model container [2022-11-21 13:49:07,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:07" (1/1) ... [2022-11-21 13:49:07,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:49:07,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:49:08,019 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8448,8461] [2022-11-21 13:49:08,070 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12616,12629] [2022-11-21 13:49:08,119 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20366,20379] [2022-11-21 13:49:08,155 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27098,27111] [2022-11-21 13:49:08,281 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[47963,47976] [2022-11-21 13:49:08,411 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[73065,73078] [2022-11-21 13:49:08,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:49:08,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:49:08,735 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8448,8461] [2022-11-21 13:49:08,753 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12616,12629] [2022-11-21 13:49:08,773 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20366,20379] [2022-11-21 13:49:08,790 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27098,27111] [2022-11-21 13:49:08,839 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[47963,47976] [2022-11-21 13:49:08,896 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_3b66eeb6-9f0c-4324-8736-2324c8555469/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[73065,73078] [2022-11-21 13:49:09,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:49:09,066 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:49:09,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09 WrapperNode [2022-11-21 13:49:09,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:49:09,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:49:09,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:49:09,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:49:09,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,267 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5697 [2022-11-21 13:49:09,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:49:09,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:49:09,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:49:09,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:49:09,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:49:09,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:49:09,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:49:09,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:49:09,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (1/1) ... [2022-11-21 13:49:09,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:49:09,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:49:09,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:49:09,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:49:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:49:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:49:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:49:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:49:09,975 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:49:09,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:49:13,180 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:49:13,210 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:49:13,210 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:49:13,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:13 BoogieIcfgContainer [2022-11-21 13:49:13,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:49:13,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:49:13,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:49:13,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:49:13,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:07" (1/3) ... [2022-11-21 13:49:13,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdd4eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:13, skipping insertion in model container [2022-11-21 13:49:13,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:09" (2/3) ... [2022-11-21 13:49:13,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdd4eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:13, skipping insertion in model container [2022-11-21 13:49:13,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:13" (3/3) ... [2022-11-21 13:49:13,236 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-21 13:49:13,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:49:13,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 13:49:13,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:49:13,360 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=PETRI_NET, 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;@7457f62c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:49:13,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 13:49:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 1190 states, 1183 states have (on average 1.7861369399830938) internal successors, (2113), 1189 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-21 13:49:13,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:13,403 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] [2022-11-21 13:49:13,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash 46255632, now seen corresponding path program 1 times [2022-11-21 13:49:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:13,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492418659] [2022-11-21 13:49:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:14,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:14,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492418659] [2022-11-21 13:49:14,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492418659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:14,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:14,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:49:14,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289711412] [2022-11-21 13:49:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:14,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:49:14,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:49:14,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:49:14,053 INFO L87 Difference]: Start difference. First operand has 1190 states, 1183 states have (on average 1.7861369399830938) internal successors, (2113), 1189 states have internal predecessors, (2113), 0 states have call successors, (0), 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 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:15,707 INFO L93 Difference]: Finished difference Result 2203 states and 3804 transitions. [2022-11-21 13:49:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:49:15,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-21 13:49:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:15,731 INFO L225 Difference]: With dead ends: 2203 [2022-11-21 13:49:15,732 INFO L226 Difference]: Without dead ends: 1434 [2022-11-21 13:49:15,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:15,741 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 6730 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6730 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:15,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6730 Valid, 1533 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:49:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-11-21 13:49:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1420. [2022-11-21 13:49:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1414 states have (on average 1.2998585572842998) internal successors, (1838), 1419 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1838 transitions. [2022-11-21 13:49:15,976 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1838 transitions. Word has length 52 [2022-11-21 13:49:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:15,976 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1838 transitions. [2022-11-21 13:49:15,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1838 transitions. [2022-11-21 13:49:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-21 13:49:15,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:15,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:49:15,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:15,982 INFO L85 PathProgramCache]: Analyzing trace with hash -625695834, now seen corresponding path program 1 times [2022-11-21 13:49:15,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:15,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093328047] [2022-11-21 13:49:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:15,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093328047] [2022-11-21 13:49:16,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093328047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:16,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:16,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:49:16,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809437195] [2022-11-21 13:49:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:16,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:49:16,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:16,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:49:16,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:49:16,172 INFO L87 Difference]: Start difference. First operand 1420 states and 1838 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:17,433 INFO L93 Difference]: Finished difference Result 2665 states and 3516 transitions. [2022-11-21 13:49:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:49:17,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-21 13:49:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:17,445 INFO L225 Difference]: With dead ends: 2665 [2022-11-21 13:49:17,445 INFO L226 Difference]: Without dead ends: 1806 [2022-11-21 13:49:17,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:17,454 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 4443 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4443 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:17,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4443 Valid, 902 Invalid, 814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:49:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-11-21 13:49:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1796. [2022-11-21 13:49:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1790 states have (on average 1.318435754189944) internal successors, (2360), 1795 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2360 transitions. [2022-11-21 13:49:17,578 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2360 transitions. Word has length 52 [2022-11-21 13:49:17,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:17,579 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2360 transitions. [2022-11-21 13:49:17,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2360 transitions. [2022-11-21 13:49:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-21 13:49:17,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:17,596 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] [2022-11-21 13:49:17,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:49:17,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:17,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1958316630, now seen corresponding path program 1 times [2022-11-21 13:49:17,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:17,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768353857] [2022-11-21 13:49:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:17,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768353857] [2022-11-21 13:49:17,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768353857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:17,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:17,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:49:17,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302963466] [2022-11-21 13:49:17,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:17,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:49:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:49:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:49:17,839 INFO L87 Difference]: Start difference. First operand 1796 states and 2360 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:19,050 INFO L93 Difference]: Finished difference Result 3577 states and 4761 transitions. [2022-11-21 13:49:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:49:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-21 13:49:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:19,060 INFO L225 Difference]: With dead ends: 3577 [2022-11-21 13:49:19,060 INFO L226 Difference]: Without dead ends: 2639 [2022-11-21 13:49:19,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:19,063 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 4016 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4016 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:19,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4016 Valid, 859 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 13:49:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-11-21 13:49:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2633. [2022-11-21 13:49:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3113818043395509) internal successors, (3445), 2632 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3445 transitions. [2022-11-21 13:49:19,235 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3445 transitions. Word has length 52 [2022-11-21 13:49:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:19,235 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3445 transitions. [2022-11-21 13:49:19,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3445 transitions. [2022-11-21 13:49:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 13:49:19,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:19,239 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] [2022-11-21 13:49:19,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:49:19,240 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)] === [2022-11-21 13:49:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1639759782, now seen corresponding path program 1 times [2022-11-21 13:49:19,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:19,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382498211] [2022-11-21 13:49:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:19,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:19,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382498211] [2022-11-21 13:49:19,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382498211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:19,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:19,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:49:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280761673] [2022-11-21 13:49:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:19,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:49:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:49:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:49:19,781 INFO L87 Difference]: Start difference. First operand 2633 states and 3445 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-11-21 13:49:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:22,984 INFO L93 Difference]: Finished difference Result 5492 states and 7546 transitions. [2022-11-21 13:49:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:49:22,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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 [2022-11-21 13:49:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:22,999 INFO L225 Difference]: With dead ends: 5492 [2022-11-21 13:49:23,000 INFO L226 Difference]: Without dead ends: 4964 [2022-11-21 13:49:23,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:49:23,003 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 5125 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5125 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:23,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5125 Valid, 3641 Invalid, 3170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 3137 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 13:49:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2022-11-21 13:49:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 2633. [2022-11-21 13:49:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3110011419870575) internal successors, (3444), 2632 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3444 transitions. [2022-11-21 13:49:23,241 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3444 transitions. Word has length 54 [2022-11-21 13:49:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:23,242 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3444 transitions. [2022-11-21 13:49:23,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-11-21 13:49:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3444 transitions. [2022-11-21 13:49:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 13:49:23,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:23,246 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] [2022-11-21 13:49:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:49:23,247 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)] === [2022-11-21 13:49:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1969154310, now seen corresponding path program 1 times [2022-11-21 13:49:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:23,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345514892] [2022-11-21 13:49:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:23,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:23,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345514892] [2022-11-21 13:49:23,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345514892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:23,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:23,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:49:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965442812] [2022-11-21 13:49:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:23,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:49:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:23,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:49:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:49:23,633 INFO L87 Difference]: Start difference. First operand 2633 states and 3444 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-11-21 13:49:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:26,265 INFO L93 Difference]: Finished difference Result 4506 states and 6094 transitions. [2022-11-21 13:49:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:49:26,266 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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 [2022-11-21 13:49:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:26,283 INFO L225 Difference]: With dead ends: 4506 [2022-11-21 13:49:26,284 INFO L226 Difference]: Without dead ends: 4500 [2022-11-21 13:49:26,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:49:26,287 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 5820 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5820 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:26,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5820 Valid, 2848 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 13:49:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2022-11-21 13:49:26,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 2633. [2022-11-21 13:49:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3106204796345642) internal successors, (3443), 2632 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3443 transitions. [2022-11-21 13:49:26,617 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3443 transitions. Word has length 54 [2022-11-21 13:49:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:26,621 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3443 transitions. [2022-11-21 13:49:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-11-21 13:49:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3443 transitions. [2022-11-21 13:49:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 13:49:26,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:26,624 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] [2022-11-21 13:49:26,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:49:26,625 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)] === [2022-11-21 13:49:26,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash -91421350, now seen corresponding path program 1 times [2022-11-21 13:49:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:26,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866489641] [2022-11-21 13:49:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:27,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:27,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866489641] [2022-11-21 13:49:27,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866489641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:27,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:27,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:49:27,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561698585] [2022-11-21 13:49:27,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:49:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:27,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:49:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:49:27,020 INFO L87 Difference]: Start difference. First operand 2633 states and 3443 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:29,080 INFO L93 Difference]: Finished difference Result 4690 states and 6404 transitions. [2022-11-21 13:49:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:49:29,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-21 13:49:29,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:29,097 INFO L225 Difference]: With dead ends: 4690 [2022-11-21 13:49:29,097 INFO L226 Difference]: Without dead ends: 4006 [2022-11-21 13:49:29,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:49:29,104 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 5836 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5836 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:29,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5836 Valid, 1954 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:49:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2022-11-21 13:49:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 2633. [2022-11-21 13:49:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3102398172820708) internal successors, (3442), 2632 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3442 transitions. [2022-11-21 13:49:29,459 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3442 transitions. Word has length 54 [2022-11-21 13:49:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:29,459 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3442 transitions. [2022-11-21 13:49:29,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3442 transitions. [2022-11-21 13:49:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 13:49:29,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:29,463 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] [2022-11-21 13:49:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:49:29,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash -217892301, now seen corresponding path program 1 times [2022-11-21 13:49:29,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:29,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835546042] [2022-11-21 13:49:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:29,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835546042] [2022-11-21 13:49:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835546042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:29,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:29,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:29,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232439403] [2022-11-21 13:49:29,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:29,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:29,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:29,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:29,539 INFO L87 Difference]: Start difference. First operand 2633 states and 3442 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:30,105 INFO L93 Difference]: Finished difference Result 3809 states and 5163 transitions. [2022-11-21 13:49:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-21 13:49:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:30,114 INFO L225 Difference]: With dead ends: 3809 [2022-11-21 13:49:30,115 INFO L226 Difference]: Without dead ends: 2398 [2022-11-21 13:49:30,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:30,119 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 632 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:30,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1366 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:49:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-11-21 13:49:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2396. [2022-11-21 13:49:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2390 states have (on average 1.3112970711297072) internal successors, (3134), 2395 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3134 transitions. [2022-11-21 13:49:30,534 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3134 transitions. Word has length 55 [2022-11-21 13:49:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:30,535 INFO L495 AbstractCegarLoop]: Abstraction has 2396 states and 3134 transitions. [2022-11-21 13:49:30,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3134 transitions. [2022-11-21 13:49:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 13:49:30,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:30,538 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] [2022-11-21 13:49:30,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:49:30,538 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)] === [2022-11-21 13:49:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1212692211, now seen corresponding path program 1 times [2022-11-21 13:49:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:30,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16881963] [2022-11-21 13:49:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16881963] [2022-11-21 13:49:30,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16881963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:30,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:30,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:30,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395219388] [2022-11-21 13:49:30,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:30,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:30,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:30,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:30,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:30,620 INFO L87 Difference]: Start difference. First operand 2396 states and 3134 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:31,340 INFO L93 Difference]: Finished difference Result 4034 states and 5593 transitions. [2022-11-21 13:49:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-21 13:49:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:31,351 INFO L225 Difference]: With dead ends: 4034 [2022-11-21 13:49:31,351 INFO L226 Difference]: Without dead ends: 2929 [2022-11-21 13:49:31,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:31,355 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 490 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:31,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1447 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:49:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-11-21 13:49:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2927. [2022-11-21 13:49:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2921 states have (on average 1.3543307086614174) internal successors, (3956), 2926 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3956 transitions. [2022-11-21 13:49:31,929 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3956 transitions. Word has length 55 [2022-11-21 13:49:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:31,929 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 3956 transitions. [2022-11-21 13:49:31,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3956 transitions. [2022-11-21 13:49:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 13:49:31,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:31,933 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] [2022-11-21 13:49:31,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:49:31,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:31,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash 508156110, now seen corresponding path program 1 times [2022-11-21 13:49:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:31,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163188271] [2022-11-21 13:49:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:32,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:32,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163188271] [2022-11-21 13:49:32,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163188271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:32,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:32,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782673830] [2022-11-21 13:49:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:32,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:32,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:32,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:32,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:32,029 INFO L87 Difference]: Start difference. First operand 2927 states and 3956 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:32,753 INFO L93 Difference]: Finished difference Result 5825 states and 8243 transitions. [2022-11-21 13:49:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:32,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-21 13:49:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:32,767 INFO L225 Difference]: With dead ends: 5825 [2022-11-21 13:49:32,768 INFO L226 Difference]: Without dead ends: 4034 [2022-11-21 13:49:32,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:32,771 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 448 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:32,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1480 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:49:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2022-11-21 13:49:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 4032. [2022-11-21 13:49:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 4026 states have (on average 1.378787878787879) internal successors, (5551), 4031 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5551 transitions. [2022-11-21 13:49:33,334 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5551 transitions. Word has length 55 [2022-11-21 13:49:33,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:33,334 INFO L495 AbstractCegarLoop]: Abstraction has 4032 states and 5551 transitions. [2022-11-21 13:49:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5551 transitions. [2022-11-21 13:49:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 13:49:33,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:33,337 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] [2022-11-21 13:49:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:49:33,337 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)] === [2022-11-21 13:49:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1409707165, now seen corresponding path program 1 times [2022-11-21 13:49:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:33,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104685224] [2022-11-21 13:49:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:33,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104685224] [2022-11-21 13:49:33,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104685224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:33,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:33,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779461556] [2022-11-21 13:49:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:33,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:33,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:33,414 INFO L87 Difference]: Start difference. First operand 4032 states and 5551 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:34,530 INFO L93 Difference]: Finished difference Result 8005 states and 11199 transitions. [2022-11-21 13:49:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:34,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-21 13:49:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:34,542 INFO L225 Difference]: With dead ends: 8005 [2022-11-21 13:49:34,542 INFO L226 Difference]: Without dead ends: 4544 [2022-11-21 13:49:34,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:34,547 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 693 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:34,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1009 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:49:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-11-21 13:49:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3633. [2022-11-21 13:49:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3628 states have (on average 1.3930540242557883) internal successors, (5054), 3632 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5054 transitions. [2022-11-21 13:49:35,143 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5054 transitions. Word has length 56 [2022-11-21 13:49:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:35,143 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 5054 transitions. [2022-11-21 13:49:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5054 transitions. [2022-11-21 13:49:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 13:49:35,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:35,147 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] [2022-11-21 13:49:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:49:35,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1142157029, now seen corresponding path program 1 times [2022-11-21 13:49:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:35,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606661130] [2022-11-21 13:49:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:35,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:35,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606661130] [2022-11-21 13:49:35,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606661130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:35,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:35,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:49:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694106559] [2022-11-21 13:49:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:49:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:49:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:49:35,826 INFO L87 Difference]: Start difference. First operand 3633 states and 5054 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2022-11-21 13:49:38,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:38,787 INFO L93 Difference]: Finished difference Result 6277 states and 8735 transitions. [2022-11-21 13:49:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:49:38,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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 [2022-11-21 13:49:38,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:38,801 INFO L225 Difference]: With dead ends: 6277 [2022-11-21 13:49:38,801 INFO L226 Difference]: Without dead ends: 6213 [2022-11-21 13:49:38,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:49:38,803 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 4063 mSDsluCounter, 4733 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4063 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:38,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4063 Valid, 5720 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:49:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6213 states. [2022-11-21 13:49:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6213 to 3620. [2022-11-21 13:49:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3616 states have (on average 1.393528761061947) internal successors, (5039), 3619 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5039 transitions. [2022-11-21 13:49:39,715 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5039 transitions. Word has length 56 [2022-11-21 13:49:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:39,715 INFO L495 AbstractCegarLoop]: Abstraction has 3620 states and 5039 transitions. [2022-11-21 13:49:39,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2022-11-21 13:49:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5039 transitions. [2022-11-21 13:49:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 13:49:39,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:39,718 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] [2022-11-21 13:49:39,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:49:39,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1119831979, now seen corresponding path program 1 times [2022-11-21 13:49:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:39,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043800949] [2022-11-21 13:49:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:39,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:39,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:39,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043800949] [2022-11-21 13:49:39,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043800949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:39,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:39,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246600974] [2022-11-21 13:49:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:39,787 INFO L87 Difference]: Start difference. First operand 3620 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:40,800 INFO L93 Difference]: Finished difference Result 7301 states and 10334 transitions. [2022-11-21 13:49:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-21 13:49:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:40,808 INFO L225 Difference]: With dead ends: 7301 [2022-11-21 13:49:40,808 INFO L226 Difference]: Without dead ends: 4120 [2022-11-21 13:49:40,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:40,813 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 531 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:40,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 817 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:49:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2022-11-21 13:49:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3309. [2022-11-21 13:49:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3306 states have (on average 1.4035087719298245) internal successors, (4640), 3308 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4640 transitions. [2022-11-21 13:49:41,562 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4640 transitions. Word has length 56 [2022-11-21 13:49:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:41,562 INFO L495 AbstractCegarLoop]: Abstraction has 3309 states and 4640 transitions. [2022-11-21 13:49:41,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4640 transitions. [2022-11-21 13:49:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 13:49:41,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:41,565 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, 1] [2022-11-21 13:49:41,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:49:41,565 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash -198475703, now seen corresponding path program 1 times [2022-11-21 13:49:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:41,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083795096] [2022-11-21 13:49:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:42,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:42,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083795096] [2022-11-21 13:49:42,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083795096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:42,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:42,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:49:42,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263242620] [2022-11-21 13:49:42,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:42,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:49:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:49:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:49:42,110 INFO L87 Difference]: Start difference. First operand 3309 states and 4640 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:45,709 INFO L93 Difference]: Finished difference Result 7232 states and 10173 transitions. [2022-11-21 13:49:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 13:49:45,709 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-21 13:49:45,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:45,724 INFO L225 Difference]: With dead ends: 7232 [2022-11-21 13:49:45,724 INFO L226 Difference]: Without dead ends: 7144 [2022-11-21 13:49:45,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-11-21 13:49:45,727 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 4149 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4149 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:45,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4149 Valid, 3177 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 13:49:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7144 states. [2022-11-21 13:49:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7144 to 3272. [2022-11-21 13:49:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3270 states have (on average 1.4048929663608563) internal successors, (4594), 3271 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4594 transitions. [2022-11-21 13:49:46,671 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4594 transitions. Word has length 57 [2022-11-21 13:49:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:46,671 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4594 transitions. [2022-11-21 13:49:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4594 transitions. [2022-11-21 13:49:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 13:49:46,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:46,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:46,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:49:46,674 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1444192760, now seen corresponding path program 1 times [2022-11-21 13:49:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:46,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81189674] [2022-11-21 13:49:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:47,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:47,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81189674] [2022-11-21 13:49:47,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81189674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:47,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:47,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:49:47,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830884879] [2022-11-21 13:49:47,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:47,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:49:47,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:47,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:49:47,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:49:47,258 INFO L87 Difference]: Start difference. First operand 3272 states and 4594 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:51,061 INFO L93 Difference]: Finished difference Result 5764 states and 8033 transitions. [2022-11-21 13:49:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 13:49:51,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-21 13:49:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:51,067 INFO L225 Difference]: With dead ends: 5764 [2022-11-21 13:49:51,067 INFO L226 Difference]: Without dead ends: 5684 [2022-11-21 13:49:51,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2022-11-21 13:49:51,069 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 2940 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:51,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2940 Valid, 4679 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 13:49:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2022-11-21 13:49:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 3243. [2022-11-21 13:49:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3242 states have (on average 1.405613818630475) internal successors, (4557), 3242 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4557 transitions. [2022-11-21 13:49:52,040 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4557 transitions. Word has length 57 [2022-11-21 13:49:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:52,041 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 4557 transitions. [2022-11-21 13:49:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4557 transitions. [2022-11-21 13:49:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-21 13:49:52,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:52,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:52,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:49:52,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:49:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash -386654778, now seen corresponding path program 1 times [2022-11-21 13:49:52,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:52,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775949657] [2022-11-21 13:49:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:52,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:52,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775949657] [2022-11-21 13:49:52,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775949657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:52,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:52,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:49:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664496179] [2022-11-21 13:49:52,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:52,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:49:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:49:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:49:52,154 INFO L87 Difference]: Start difference. First operand 3243 states and 4557 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:54,492 INFO L93 Difference]: Finished difference Result 10327 states and 14821 transitions. [2022-11-21 13:49:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:49:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-21 13:49:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:54,501 INFO L225 Difference]: With dead ends: 10327 [2022-11-21 13:49:54,501 INFO L226 Difference]: Without dead ends: 7573 [2022-11-21 13:49:54,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:54,505 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1461 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:54,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 908 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:49:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7573 states. [2022-11-21 13:49:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7573 to 5701. [2022-11-21 13:49:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 5700 states have (on average 1.4033333333333333) internal successors, (7999), 5700 states have internal predecessors, (7999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 7999 transitions. [2022-11-21 13:49:56,206 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 7999 transitions. Word has length 61 [2022-11-21 13:49:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:56,206 INFO L495 AbstractCegarLoop]: Abstraction has 5701 states and 7999 transitions. [2022-11-21 13:49:56,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:56,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 7999 transitions. [2022-11-21 13:49:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-21 13:49:56,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:56,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:56,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:49:56,210 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)] === [2022-11-21 13:49:56,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash 633580297, now seen corresponding path program 1 times [2022-11-21 13:49:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:56,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617689587] [2022-11-21 13:49:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:56,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617689587] [2022-11-21 13:49:56,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617689587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:56,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:56,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:49:56,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117994930] [2022-11-21 13:49:56,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:56,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:49:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:49:56,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:49:56,318 INFO L87 Difference]: Start difference. First operand 5701 states and 7999 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:58,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:58,186 INFO L93 Difference]: Finished difference Result 8997 states and 12666 transitions. [2022-11-21 13:49:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:49:58,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-21 13:49:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:58,190 INFO L225 Difference]: With dead ends: 8997 [2022-11-21 13:49:58,190 INFO L226 Difference]: Without dead ends: 3743 [2022-11-21 13:49:58,196 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 [2022-11-21 13:49:58,197 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1265 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:58,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 690 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:49:58,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2022-11-21 13:49:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3739. [2022-11-21 13:49:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3738 states have (on average 1.379079721776351) internal successors, (5155), 3738 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 5155 transitions. [2022-11-21 13:49:59,619 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 5155 transitions. Word has length 62 [2022-11-21 13:49:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:59,619 INFO L495 AbstractCegarLoop]: Abstraction has 3739 states and 5155 transitions. [2022-11-21 13:49:59,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 5155 transitions. [2022-11-21 13:49:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 13:49:59,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:59,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:59,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:49:59,623 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)] === [2022-11-21 13:49:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash 480339852, now seen corresponding path program 1 times [2022-11-21 13:49:59,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:59,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030022638] [2022-11-21 13:49:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030022638] [2022-11-21 13:49:59,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030022638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:59,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:59,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651743150] [2022-11-21 13:49:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:59,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:59,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:59,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:59,747 INFO L87 Difference]: Start difference. First operand 3739 states and 5155 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:02,534 INFO L93 Difference]: Finished difference Result 10009 states and 13977 transitions. [2022-11-21 13:50:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-21 13:50:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:02,542 INFO L225 Difference]: With dead ends: 10009 [2022-11-21 13:50:02,542 INFO L226 Difference]: Without dead ends: 6717 [2022-11-21 13:50:02,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:02,545 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 210 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:02,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 743 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-11-21 13:50:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 6299. [2022-11-21 13:50:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6299 states, 6298 states have (on average 1.3799618926643378) internal successors, (8691), 6298 states have internal predecessors, (8691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 8691 transitions. [2022-11-21 13:50:05,215 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 8691 transitions. Word has length 66 [2022-11-21 13:50:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:05,216 INFO L495 AbstractCegarLoop]: Abstraction has 6299 states and 8691 transitions. [2022-11-21 13:50:05,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 8691 transitions. [2022-11-21 13:50:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 13:50:05,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:05,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:05,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 13:50:05,219 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)] === [2022-11-21 13:50:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash -877917453, now seen corresponding path program 1 times [2022-11-21 13:50:05,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:05,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489817829] [2022-11-21 13:50:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:05,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:05,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489817829] [2022-11-21 13:50:05,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489817829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:05,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:05,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:50:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002023679] [2022-11-21 13:50:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:05,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:50:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:50:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:50:05,429 INFO L87 Difference]: Start difference. First operand 6299 states and 8691 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:11,491 INFO L93 Difference]: Finished difference Result 13328 states and 18240 transitions. [2022-11-21 13:50:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-21 13:50:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:11,509 INFO L225 Difference]: With dead ends: 13328 [2022-11-21 13:50:11,509 INFO L226 Difference]: Without dead ends: 13326 [2022-11-21 13:50:11,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:50:11,511 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 536 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:11,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1996 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:50:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13326 states. [2022-11-21 13:50:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13326 to 6743. [2022-11-21 13:50:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6743 states, 6742 states have (on average 1.3549391871848115) internal successors, (9135), 6742 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6743 states to 6743 states and 9135 transitions. [2022-11-21 13:50:14,181 INFO L78 Accepts]: Start accepts. Automaton has 6743 states and 9135 transitions. Word has length 69 [2022-11-21 13:50:14,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:14,181 INFO L495 AbstractCegarLoop]: Abstraction has 6743 states and 9135 transitions. [2022-11-21 13:50:14,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 6743 states and 9135 transitions. [2022-11-21 13:50:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 13:50:14,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:14,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:14,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 13:50:14,184 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)] === [2022-11-21 13:50:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1274758828, now seen corresponding path program 1 times [2022-11-21 13:50:14,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:14,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845822352] [2022-11-21 13:50:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:14,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:14,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:14,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845822352] [2022-11-21 13:50:14,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845822352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:14,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:14,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521592033] [2022-11-21 13:50:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:14,250 INFO L87 Difference]: Start difference. First operand 6743 states and 9135 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:19,504 INFO L93 Difference]: Finished difference Result 18116 states and 24670 transitions. [2022-11-21 13:50:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-21 13:50:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:19,521 INFO L225 Difference]: With dead ends: 18116 [2022-11-21 13:50:19,522 INFO L226 Difference]: Without dead ends: 11820 [2022-11-21 13:50:19,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:19,527 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 242 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:19,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 672 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:50:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11820 states. [2022-11-21 13:50:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11820 to 11818. [2022-11-21 13:50:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11818 states, 11817 states have (on average 1.3434881949733435) internal successors, (15876), 11817 states have internal predecessors, (15876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 15876 transitions. [2022-11-21 13:50:24,540 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 15876 transitions. Word has length 70 [2022-11-21 13:50:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:24,541 INFO L495 AbstractCegarLoop]: Abstraction has 11818 states and 15876 transitions. [2022-11-21 13:50:24,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 15876 transitions. [2022-11-21 13:50:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 13:50:24,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:24,547 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] [2022-11-21 13:50:24,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 13:50:24,547 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)] === [2022-11-21 13:50:24,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1811246508, now seen corresponding path program 1 times [2022-11-21 13:50:24,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:24,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861787687] [2022-11-21 13:50:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:24,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861787687] [2022-11-21 13:50:24,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861787687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:24,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:24,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:50:24,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973525321] [2022-11-21 13:50:24,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:24,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:50:24,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:50:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:50:24,683 INFO L87 Difference]: Start difference. First operand 11818 states and 15876 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2022-11-21 13:50:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:31,524 INFO L93 Difference]: Finished difference Result 20712 states and 27960 transitions. [2022-11-21 13:50:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:50:31,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 [2022-11-21 13:50:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:31,550 INFO L225 Difference]: With dead ends: 20712 [2022-11-21 13:50:31,550 INFO L226 Difference]: Without dead ends: 17028 [2022-11-21 13:50:31,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:31,557 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 975 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:31,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1079 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:50:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17028 states. [2022-11-21 13:50:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17028 to 14796. [2022-11-21 13:50:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14796 states, 14795 states have (on average 1.3405880364988172) internal successors, (19834), 14795 states have internal predecessors, (19834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14796 states to 14796 states and 19834 transitions. [2022-11-21 13:50:38,083 INFO L78 Accepts]: Start accepts. Automaton has 14796 states and 19834 transitions. Word has length 71 [2022-11-21 13:50:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:38,083 INFO L495 AbstractCegarLoop]: Abstraction has 14796 states and 19834 transitions. [2022-11-21 13:50:38,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2022-11-21 13:50:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14796 states and 19834 transitions. [2022-11-21 13:50:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 13:50:38,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:38,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:38,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 13:50:38,087 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)] === [2022-11-21 13:50:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1813757315, now seen corresponding path program 1 times [2022-11-21 13:50:38,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:38,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972868581] [2022-11-21 13:50:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:38,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:38,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:38,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972868581] [2022-11-21 13:50:38,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972868581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:38,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:38,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105427015] [2022-11-21 13:50:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:38,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:38,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:38,158 INFO L87 Difference]: Start difference. First operand 14796 states and 19834 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:44,245 INFO L93 Difference]: Finished difference Result 17848 states and 23872 transitions. [2022-11-21 13:50:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:44,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-21 13:50:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:44,257 INFO L225 Difference]: With dead ends: 17848 [2022-11-21 13:50:44,257 INFO L226 Difference]: Without dead ends: 11750 [2022-11-21 13:50:44,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:44,261 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 169 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:44,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 807 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11750 states. [2022-11-21 13:50:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11750 to 11680. [2022-11-21 13:50:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11680 states, 11679 states have (on average 1.3170648171932529) internal successors, (15382), 11679 states have internal predecessors, (15382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11680 states to 11680 states and 15382 transitions. [2022-11-21 13:50:49,128 INFO L78 Accepts]: Start accepts. Automaton has 11680 states and 15382 transitions. Word has length 73 [2022-11-21 13:50:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:49,128 INFO L495 AbstractCegarLoop]: Abstraction has 11680 states and 15382 transitions. [2022-11-21 13:50:49,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11680 states and 15382 transitions. [2022-11-21 13:50:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 13:50:49,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:49,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 13:50:49,132 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)] === [2022-11-21 13:50:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -711762074, now seen corresponding path program 1 times [2022-11-21 13:50:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839341452] [2022-11-21 13:50:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839341452] [2022-11-21 13:50:49,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839341452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:49,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:49,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:50:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639853294] [2022-11-21 13:50:49,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:49,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:49,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:49,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:49,289 INFO L87 Difference]: Start difference. First operand 11680 states and 15382 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:03,589 INFO L93 Difference]: Finished difference Result 35044 states and 45980 transitions. [2022-11-21 13:51:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:51:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-21 13:51:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:03,638 INFO L225 Difference]: With dead ends: 35044 [2022-11-21 13:51:03,638 INFO L226 Difference]: Without dead ends: 28818 [2022-11-21 13:51:03,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:51:03,647 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 2576 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:03,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 681 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:51:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28818 states. [2022-11-21 13:51:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28818 to 13540. [2022-11-21 13:51:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13540 states, 13539 states have (on average 1.3070389245882266) internal successors, (17696), 13539 states have internal predecessors, (17696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13540 states to 13540 states and 17696 transitions. [2022-11-21 13:51:09,859 INFO L78 Accepts]: Start accepts. Automaton has 13540 states and 17696 transitions. Word has length 74 [2022-11-21 13:51:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:09,859 INFO L495 AbstractCegarLoop]: Abstraction has 13540 states and 17696 transitions. [2022-11-21 13:51:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 13540 states and 17696 transitions. [2022-11-21 13:51:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-21 13:51:09,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:09,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:09,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 13:51:09,862 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)] === [2022-11-21 13:51:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1397189844, now seen corresponding path program 1 times [2022-11-21 13:51:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:09,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792593600] [2022-11-21 13:51:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:09,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:10,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:10,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792593600] [2022-11-21 13:51:10,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792593600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:10,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:10,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:51:10,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267720150] [2022-11-21 13:51:10,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:10,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:51:10,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:51:10,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:51:10,033 INFO L87 Difference]: Start difference. First operand 13540 states and 17696 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:17,971 INFO L93 Difference]: Finished difference Result 20048 states and 26394 transitions. [2022-11-21 13:51:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:51:17,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-21 13:51:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:17,989 INFO L225 Difference]: With dead ends: 20048 [2022-11-21 13:51:17,989 INFO L226 Difference]: Without dead ends: 17434 [2022-11-21 13:51:17,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:17,994 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 878 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:17,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1214 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:51:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17434 states. [2022-11-21 13:51:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17434 to 16104. [2022-11-21 13:51:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16104 states, 16103 states have (on average 1.3090728435695211) internal successors, (21080), 16103 states have internal predecessors, (21080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16104 states to 16104 states and 21080 transitions. [2022-11-21 13:51:24,412 INFO L78 Accepts]: Start accepts. Automaton has 16104 states and 21080 transitions. Word has length 75 [2022-11-21 13:51:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:24,412 INFO L495 AbstractCegarLoop]: Abstraction has 16104 states and 21080 transitions. [2022-11-21 13:51:24,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 16104 states and 21080 transitions. [2022-11-21 13:51:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 13:51:24,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:24,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:24,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 13:51:24,415 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)] === [2022-11-21 13:51:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1322911146, now seen corresponding path program 1 times [2022-11-21 13:51:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:24,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84062863] [2022-11-21 13:51:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:24,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:24,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84062863] [2022-11-21 13:51:24,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84062863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:24,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:24,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:51:24,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666706911] [2022-11-21 13:51:24,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:24,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:51:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:24,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:51:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:51:24,558 INFO L87 Difference]: Start difference. First operand 16104 states and 21080 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:33,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:33,144 INFO L93 Difference]: Finished difference Result 25088 states and 33062 transitions. [2022-11-21 13:51:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:51:33,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-21 13:51:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:33,168 INFO L225 Difference]: With dead ends: 25088 [2022-11-21 13:51:33,169 INFO L226 Difference]: Without dead ends: 20898 [2022-11-21 13:51:33,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:33,175 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 902 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:33,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1111 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:51:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20898 states. [2022-11-21 13:51:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20898 to 19568. [2022-11-21 13:51:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19568 states, 19567 states have (on average 1.3091429447539225) internal successors, (25616), 19567 states have internal predecessors, (25616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19568 states to 19568 states and 25616 transitions. [2022-11-21 13:51:41,272 INFO L78 Accepts]: Start accepts. Automaton has 19568 states and 25616 transitions. Word has length 77 [2022-11-21 13:51:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:41,272 INFO L495 AbstractCegarLoop]: Abstraction has 19568 states and 25616 transitions. [2022-11-21 13:51:41,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 19568 states and 25616 transitions. [2022-11-21 13:51:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 13:51:41,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:41,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:41,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 13:51:41,276 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)] === [2022-11-21 13:51:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash -769071113, now seen corresponding path program 1 times [2022-11-21 13:51:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:41,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311302270] [2022-11-21 13:51:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:41,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311302270] [2022-11-21 13:51:41,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311302270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:41,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:41,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:51:41,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242537349] [2022-11-21 13:51:41,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:41,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:51:41,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:41,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:51:41,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:51:41,476 INFO L87 Difference]: Start difference. First operand 19568 states and 25616 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:50,279 INFO L93 Difference]: Finished difference Result 26402 states and 34617 transitions. [2022-11-21 13:51:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:51:50,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-21 13:51:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:50,304 INFO L225 Difference]: With dead ends: 26402 [2022-11-21 13:51:50,304 INFO L226 Difference]: Without dead ends: 20764 [2022-11-21 13:51:50,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:50,313 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 952 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:50,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1088 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:51:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20764 states. [2022-11-21 13:51:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20764 to 19436. [2022-11-21 13:51:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19436 states, 19435 states have (on average 1.306714689992282) internal successors, (25396), 19435 states have internal predecessors, (25396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19436 states to 19436 states and 25396 transitions. [2022-11-21 13:51:58,313 INFO L78 Accepts]: Start accepts. Automaton has 19436 states and 25396 transitions. Word has length 82 [2022-11-21 13:51:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:58,313 INFO L495 AbstractCegarLoop]: Abstraction has 19436 states and 25396 transitions. [2022-11-21 13:51:58,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 19436 states and 25396 transitions. [2022-11-21 13:51:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 13:51:58,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:58,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:58,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 13:51:58,317 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)] === [2022-11-21 13:51:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1124855035, now seen corresponding path program 1 times [2022-11-21 13:51:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:58,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463677033] [2022-11-21 13:51:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:58,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463677033] [2022-11-21 13:51:58,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463677033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:58,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:58,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:51:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865316645] [2022-11-21 13:51:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:58,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:51:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:51:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:58,465 INFO L87 Difference]: Start difference. First operand 19436 states and 25396 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:52:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:52:09,003 INFO L93 Difference]: Finished difference Result 23234 states and 30236 transitions. [2022-11-21 13:52:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:52:09,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-21 13:52:09,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:52:09,031 INFO L225 Difference]: With dead ends: 23234 [2022-11-21 13:52:09,031 INFO L226 Difference]: Without dead ends: 22584 [2022-11-21 13:52:09,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:52:09,037 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1999 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:52:09,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 659 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:52:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22584 states. [2022-11-21 13:52:18,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22584 to 19434. [2022-11-21 13:52:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19434 states, 19433 states have (on average 1.3066433386507488) internal successors, (25392), 19433 states have internal predecessors, (25392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:52:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19434 states to 19434 states and 25392 transitions. [2022-11-21 13:52:18,108 INFO L78 Accepts]: Start accepts. Automaton has 19434 states and 25392 transitions. Word has length 83 [2022-11-21 13:52:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:52:18,109 INFO L495 AbstractCegarLoop]: Abstraction has 19434 states and 25392 transitions. [2022-11-21 13:52:18,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:52:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19434 states and 25392 transitions. [2022-11-21 13:52:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:52:18,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:52:18,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:18,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 13:52:18,115 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)] === [2022-11-21 13:52:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -519982526, now seen corresponding path program 1 times [2022-11-21 13:52:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:18,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813103798] [2022-11-21 13:52:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:18,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:18,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813103798] [2022-11-21 13:52:18,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813103798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:18,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135223427] [2022-11-21 13:52:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:18,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:18,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:18,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:18,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b66eeb6-9f0c-4324-8736-2324c8555469/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:52:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:18,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 13:52:18,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:19,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:52:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:20,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135223427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:52:20,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:52:20,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2022-11-21 13:52:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78065901] [2022-11-21 13:52:20,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:52:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:52:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:52:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:52:20,547 INFO L87 Difference]: Start difference. First operand 19434 states and 25392 transitions. Second operand has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:53:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:53:08,151 INFO L93 Difference]: Finished difference Result 102351 states and 132509 transitions. [2022-11-21 13:53:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-21 13:53:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 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 91 [2022-11-21 13:53:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:53:08,326 INFO L225 Difference]: With dead ends: 102351 [2022-11-21 13:53:08,326 INFO L226 Difference]: Without dead ends: 83365 [2022-11-21 13:53:08,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1145, Invalid=4257, Unknown=0, NotChecked=0, Total=5402 [2022-11-21 13:53:08,366 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 3809 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3809 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 3919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:53:08,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3809 Valid, 3673 Invalid, 3919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 13:53:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states.