./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:27:25,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:27:25,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:27:25,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:27:25,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:27:25,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:27:25,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:27:25,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:27:25,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:27:25,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:27:25,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:27:25,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:27:25,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:27:25,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:27:25,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:27:25,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:27:25,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:27:25,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:27:25,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:27:25,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:27:25,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:27:25,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:27:25,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:27:25,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:27:25,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:27:25,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:27:25,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:27:25,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:27:25,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:27:25,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:27:25,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:27:25,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:27:25,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:27:25,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:27:25,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:27:25,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:27:25,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:27:25,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:27:25,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:27:25,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:27:25,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:27:25,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:27:25,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:27:25,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:27:25,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:27:25,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:27:25,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:27:25,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:27:25,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:27:25,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:27:25,856 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:27:25,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:27:25,856 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:27:25,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:27:25,857 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:27:25,857 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:27:25,857 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:27:25,857 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:27:25,857 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:27:25,857 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:27:25,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:27:25,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:27:25,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:27:25,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:27:25,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:27:25,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:27:25,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:27:25,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:27:25,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:27:25,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:27:25,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:27:25,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:27:25,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:27:25,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:27:25,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:27:25,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:27:25,861 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:27:25,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:27:25,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:27:25,861 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:27:25,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:27:25,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:27:25,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:27:25,862 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d [2022-12-14 15:27:26,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:27:26,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:27:26,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:27:26,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:27:26,065 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:27:26,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-12-14 15:27:28,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:27:28,962 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:27:28,963 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-12-14 15:27:28,980 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/data/6923a2b5c/73d40c02c7d54d9cbd6216104303be34/FLAGec8b52334 [2022-12-14 15:27:29,167 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/data/6923a2b5c/73d40c02c7d54d9cbd6216104303be34 [2022-12-14 15:27:29,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:27:29,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:27:29,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:27:29,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:27:29,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:27:29,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:27:29" (1/1) ... [2022-12-14 15:27:29,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f10b862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:29, skipping insertion in model container [2022-12-14 15:27:29,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:27:29" (1/1) ... [2022-12-14 15:27:29,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:27:29,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:27:29,538 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2022-12-14 15:27:29,563 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2022-12-14 15:27:29,569 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2022-12-14 15:27:29,579 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2022-12-14 15:27:29,594 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2022-12-14 15:27:29,619 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2022-12-14 15:27:30,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:27:30,038 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:27:30,097 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2022-12-14 15:27:30,108 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2022-12-14 15:27:30,112 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2022-12-14 15:27:30,118 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2022-12-14 15:27:30,126 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2022-12-14 15:27:30,141 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_4a7c9259-4918-4016-a89c-e88c03f47f8a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2022-12-14 15:27:30,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:27:30,497 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:27:30,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30 WrapperNode [2022-12-14 15:27:30,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:27:30,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:27:30,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:27:30,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:27:30,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,627 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9273 [2022-12-14 15:27:30,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:27:30,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:27:30,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:27:30,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:27:30,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,714 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:27:30,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:27:30,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:27:30,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:27:30,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (1/1) ... [2022-12-14 15:27:30,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:27:30,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:27:30,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:27:30,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7c9259-4918-4016-a89c-e88c03f47f8a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:27:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:27:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:27:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:27:30,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:27:31,087 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:27:31,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:27:33,736 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:27:34,062 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:27:34,063 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 15:27:34,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:27:34 BoogieIcfgContainer [2022-12-14 15:27:34,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:27:34,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:27:34,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:27:34,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:27:34,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:27:29" (1/3) ... [2022-12-14 15:27:34,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24424fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:27:34, skipping insertion in model container [2022-12-14 15:27:34,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:30" (2/3) ... [2022-12-14 15:27:34,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24424fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:27:34, skipping insertion in model container [2022-12-14 15:27:34,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:27:34" (3/3) ... [2022-12-14 15:27:34,076 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-12-14 15:27:34,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:27:34,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 15:27:34,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:27:34,182 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28423e73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:27:34,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 15:27:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 1704 states, 1697 states have (on average 1.8002357100766058) internal successors, (3055), 1703 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 15:27:34,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:34,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:27:34,210 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)] === [2022-12-14 15:27:34,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:34,214 INFO L85 PathProgramCache]: Analyzing trace with hash -172755925, now seen corresponding path program 1 times [2022-12-14 15:27:34,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:34,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359125582] [2022-12-14 15:27:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:34,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:34,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359125582] [2022-12-14 15:27:34,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359125582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:34,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:34,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:27:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184727455] [2022-12-14 15:27:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:34,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:27:34,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:27:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:34,594 INFO L87 Difference]: Start difference. First operand has 1704 states, 1697 states have (on average 1.8002357100766058) internal successors, (3055), 1703 states have internal predecessors, (3055), 0 states have call successors, (0), 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 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:35,006 INFO L93 Difference]: Finished difference Result 2389 states and 4199 transitions. [2022-12-14 15:27:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:27:35,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-14 15:27:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:35,036 INFO L225 Difference]: With dead ends: 2389 [2022-12-14 15:27:35,036 INFO L226 Difference]: Without dead ends: 2233 [2022-12-14 15:27:35,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:35,045 INFO L413 NwaCegarLoop]: 3529 mSDtfsCounter, 1817 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:35,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 5452 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:27:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2022-12-14 15:27:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2223. [2022-12-14 15:27:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2217 states have (on average 1.2877762742444745) internal successors, (2855), 2222 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2855 transitions. [2022-12-14 15:27:35,145 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2855 transitions. Word has length 75 [2022-12-14 15:27:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:35,146 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 2855 transitions. [2022-12-14 15:27:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2855 transitions. [2022-12-14 15:27:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 15:27:35,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:35,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:27:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:27:35,155 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)] === [2022-12-14 15:27:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1644069307, now seen corresponding path program 1 times [2022-12-14 15:27:35,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:35,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912050174] [2022-12-14 15:27:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:35,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:35,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912050174] [2022-12-14 15:27:35,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912050174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:35,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:35,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:27:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179852470] [2022-12-14 15:27:35,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:27:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:27:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:35,315 INFO L87 Difference]: Start difference. First operand 2223 states and 2855 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:35,568 INFO L93 Difference]: Finished difference Result 2998 states and 3955 transitions. [2022-12-14 15:27:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:27:35,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-14 15:27:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:35,585 INFO L225 Difference]: With dead ends: 2998 [2022-12-14 15:27:35,586 INFO L226 Difference]: Without dead ends: 2621 [2022-12-14 15:27:35,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:35,589 INFO L413 NwaCegarLoop]: 2232 mSDtfsCounter, 1128 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:35,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 3562 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:27:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2022-12-14 15:27:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2611. [2022-12-14 15:27:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2605 states have (on average 1.307101727447217) internal successors, (3405), 2610 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3405 transitions. [2022-12-14 15:27:35,714 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3405 transitions. Word has length 75 [2022-12-14 15:27:35,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:35,714 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 3405 transitions. [2022-12-14 15:27:35,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3405 transitions. [2022-12-14 15:27:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 15:27:35,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:35,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:27:35,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:27:35,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:27:35,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash 281280943, now seen corresponding path program 1 times [2022-12-14 15:27:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:35,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239861748] [2022-12-14 15:27:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:35,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:35,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:35,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239861748] [2022-12-14 15:27:35,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239861748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:35,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:35,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:27:35,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678431374] [2022-12-14 15:27:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:35,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:27:35,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:35,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:27:35,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:27:35,932 INFO L87 Difference]: Start difference. First operand 2611 states and 3405 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:36,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:36,859 INFO L93 Difference]: Finished difference Result 4650 states and 6214 transitions. [2022-12-14 15:27:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:27:36,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-14 15:27:36,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:36,868 INFO L225 Difference]: With dead ends: 4650 [2022-12-14 15:27:36,868 INFO L226 Difference]: Without dead ends: 2641 [2022-12-14 15:27:36,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:27:36,873 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 5352 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5352 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:36,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5352 Valid, 1124 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 15:27:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2022-12-14 15:27:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2631. [2022-12-14 15:27:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2625 states have (on average 1.3455238095238096) internal successors, (3532), 2630 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3532 transitions. [2022-12-14 15:27:37,036 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3532 transitions. Word has length 75 [2022-12-14 15:27:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:37,037 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 3532 transitions. [2022-12-14 15:27:37,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3532 transitions. [2022-12-14 15:27:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 15:27:37,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:37,042 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] [2022-12-14 15:27:37,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:27:37,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:27:37,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:37,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1643166464, now seen corresponding path program 1 times [2022-12-14 15:27:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:37,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890526534] [2022-12-14 15:27:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:37,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:37,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:37,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890526534] [2022-12-14 15:27:37,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890526534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:37,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:37,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:27:37,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173173692] [2022-12-14 15:27:37,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:37,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:27:37,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:37,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:27:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:27:37,197 INFO L87 Difference]: Start difference. First operand 2631 states and 3532 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:37,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:37,952 INFO L93 Difference]: Finished difference Result 5389 states and 7377 transitions. [2022-12-14 15:27:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:27:37,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-12-14 15:27:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:37,971 INFO L225 Difference]: With dead ends: 5389 [2022-12-14 15:27:37,972 INFO L226 Difference]: Without dead ends: 3200 [2022-12-14 15:27:37,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:27:37,977 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 4210 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4210 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:37,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4210 Valid, 892 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 15:27:37,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2022-12-14 15:27:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3190. [2022-12-14 15:27:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3184 states have (on average 1.3693467336683418) internal successors, (4360), 3189 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4360 transitions. [2022-12-14 15:27:38,206 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4360 transitions. Word has length 76 [2022-12-14 15:27:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:38,207 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 4360 transitions. [2022-12-14 15:27:38,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4360 transitions. [2022-12-14 15:27:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 15:27:38,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:38,213 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] [2022-12-14 15:27:38,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:27:38,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:27:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash -867968266, now seen corresponding path program 1 times [2022-12-14 15:27:38,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:38,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544740576] [2022-12-14 15:27:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:38,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:38,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544740576] [2022-12-14 15:27:38,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544740576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:38,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:38,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:27:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635080240] [2022-12-14 15:27:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:38,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:27:38,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:27:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:38,298 INFO L87 Difference]: Start difference. First operand 3190 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:38,558 INFO L93 Difference]: Finished difference Result 6732 states and 9309 transitions. [2022-12-14 15:27:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:27:38,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2022-12-14 15:27:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:38,568 INFO L225 Difference]: With dead ends: 6732 [2022-12-14 15:27:38,568 INFO L226 Difference]: Without dead ends: 4959 [2022-12-14 15:27:38,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:38,572 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1039 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:38,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 2498 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:27:38,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2022-12-14 15:27:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 4949. [2022-12-14 15:27:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4949 states, 4943 states have (on average 1.3667813068986445) internal successors, (6756), 4948 states have internal predecessors, (6756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4949 states to 4949 states and 6756 transitions. [2022-12-14 15:27:38,825 INFO L78 Accepts]: Start accepts. Automaton has 4949 states and 6756 transitions. Word has length 77 [2022-12-14 15:27:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:38,825 INFO L495 AbstractCegarLoop]: Abstraction has 4949 states and 6756 transitions. [2022-12-14 15:27:38,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4949 states and 6756 transitions. [2022-12-14 15:27:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 15:27:38,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:38,829 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] [2022-12-14 15:27:38,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:27:38,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:27:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:38,830 INFO L85 PathProgramCache]: Analyzing trace with hash 532148261, now seen corresponding path program 1 times [2022-12-14 15:27:38,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:38,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465136200] [2022-12-14 15:27:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:38,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:38,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465136200] [2022-12-14 15:27:38,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465136200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:38,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:38,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:27:38,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56372409] [2022-12-14 15:27:38,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:38,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:27:38,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:27:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:38,885 INFO L87 Difference]: Start difference. First operand 4949 states and 6756 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:39,370 INFO L93 Difference]: Finished difference Result 10728 states and 14799 transitions. [2022-12-14 15:27:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:27:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2022-12-14 15:27:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:39,383 INFO L225 Difference]: With dead ends: 10728 [2022-12-14 15:27:39,383 INFO L226 Difference]: Without dead ends: 7737 [2022-12-14 15:27:39,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:39,387 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 1059 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:39,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 2516 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:27:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2022-12-14 15:27:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7727. [2022-12-14 15:27:39,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7727 states, 7721 states have (on average 1.3636834606916202) internal successors, (10529), 7726 states have internal predecessors, (10529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 10529 transitions. [2022-12-14 15:27:39,749 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 10529 transitions. Word has length 77 [2022-12-14 15:27:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:39,749 INFO L495 AbstractCegarLoop]: Abstraction has 7727 states and 10529 transitions. [2022-12-14 15:27:39,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 10529 transitions. [2022-12-14 15:27:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 15:27:39,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:39,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:27:39,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:27:39,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:27:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash 413664227, now seen corresponding path program 1 times [2022-12-14 15:27:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:39,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305669626] [2022-12-14 15:27:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:39,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:39,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:39,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305669626] [2022-12-14 15:27:39,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305669626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:39,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:39,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:27:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626564015] [2022-12-14 15:27:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:39,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:27:39,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:27:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:39,813 INFO L87 Difference]: Start difference. First operand 7727 states and 10529 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:40,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:40,560 INFO L93 Difference]: Finished difference Result 18134 states and 25082 transitions. [2022-12-14 15:27:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:27:40,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2022-12-14 15:27:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:40,580 INFO L225 Difference]: With dead ends: 18134 [2022-12-14 15:27:40,580 INFO L226 Difference]: Without dead ends: 12191 [2022-12-14 15:27:40,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:27:40,585 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 664 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:40,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 2136 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:27:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2022-12-14 15:27:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 12181. [2022-12-14 15:27:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12181 states, 12175 states have (on average 1.3685420944558522) internal successors, (16662), 12180 states have internal predecessors, (16662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12181 states to 12181 states and 16662 transitions. [2022-12-14 15:27:41,166 INFO L78 Accepts]: Start accepts. Automaton has 12181 states and 16662 transitions. Word has length 77 [2022-12-14 15:27:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:41,166 INFO L495 AbstractCegarLoop]: Abstraction has 12181 states and 16662 transitions. [2022-12-14 15:27:41,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12181 states and 16662 transitions. [2022-12-14 15:27:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 15:27:41,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:41,172 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] [2022-12-14 15:27:41,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 15:27:41,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:27:41,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:41,172 INFO L85 PathProgramCache]: Analyzing trace with hash 354976211, now seen corresponding path program 1 times [2022-12-14 15:27:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:41,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889683896] [2022-12-14 15:27:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:41,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:41,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:41,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889683896] [2022-12-14 15:27:41,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889683896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:41,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:41,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:27:41,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540062999] [2022-12-14 15:27:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:41,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:27:41,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:27:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:27:41,300 INFO L87 Difference]: Start difference. First operand 12181 states and 16662 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:43,495 INFO L93 Difference]: Finished difference Result 30002 states and 41316 transitions. [2022-12-14 15:27:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:27:43,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 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 [2022-12-14 15:27:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:43,531 INFO L225 Difference]: With dead ends: 30002 [2022-12-14 15:27:43,531 INFO L226 Difference]: Without dead ends: 18787 [2022-12-14 15:27:43,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:27:43,544 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 3618 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:43,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3618 Valid, 757 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 15:27:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18787 states. [2022-12-14 15:27:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18787 to 18777. [2022-12-14 15:27:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18777 states, 18771 states have (on average 1.3683341324383358) internal successors, (25685), 18776 states have internal predecessors, (25685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 25685 transitions. [2022-12-14 15:27:44,901 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 25685 transitions. Word has length 77 [2022-12-14 15:27:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:44,901 INFO L495 AbstractCegarLoop]: Abstraction has 18777 states and 25685 transitions. [2022-12-14 15:27:44,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 25685 transitions. [2022-12-14 15:27:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 15:27:44,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:44,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:27:44,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 15:27:44,907 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)] === [2022-12-14 15:27:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2035237967, now seen corresponding path program 1 times [2022-12-14 15:27:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:44,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589121363] [2022-12-14 15:27:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:45,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:45,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589121363] [2022-12-14 15:27:45,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589121363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:45,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:45,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:27:45,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136596222] [2022-12-14 15:27:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:45,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:27:45,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:27:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:27:45,051 INFO L87 Difference]: Start difference. First operand 18777 states and 25685 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:52,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:27:52,203 INFO L93 Difference]: Finished difference Result 80093 states and 110675 transitions. [2022-12-14 15:27:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 15:27:52,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-14 15:27:52,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:27:52,328 INFO L225 Difference]: With dead ends: 80093 [2022-12-14 15:27:52,328 INFO L226 Difference]: Without dead ends: 73478 [2022-12-14 15:27:52,345 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 [2022-12-14 15:27:52,346 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 6486 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6486 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 15:27:52,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6486 Valid, 1582 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 15:27:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73478 states. [2022-12-14 15:27:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73478 to 18825. [2022-12-14 15:27:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18825 states, 18819 states have (on average 1.3682448589191774) internal successors, (25749), 18824 states have internal predecessors, (25749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18825 states to 18825 states and 25749 transitions. [2022-12-14 15:27:54,805 INFO L78 Accepts]: Start accepts. Automaton has 18825 states and 25749 transitions. Word has length 78 [2022-12-14 15:27:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:27:54,805 INFO L495 AbstractCegarLoop]: Abstraction has 18825 states and 25749 transitions. [2022-12-14 15:27:54,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:27:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 18825 states and 25749 transitions. [2022-12-14 15:27:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 15:27:54,811 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:27:54,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:27:54,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 15:27:54,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:27:54,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:27:54,812 INFO L85 PathProgramCache]: Analyzing trace with hash 139680224, now seen corresponding path program 1 times [2022-12-14 15:27:54,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:27:54,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370487463] [2022-12-14 15:27:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:27:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:27:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:27:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:27:54,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:27:54,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370487463] [2022-12-14 15:27:54,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370487463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:27:54,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:27:54,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:27:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006634975] [2022-12-14 15:27:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:27:54,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:27:54,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:27:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:27:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:27:54,921 INFO L87 Difference]: Start difference. First operand 18825 states and 25749 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:28:06,252 INFO L93 Difference]: Finished difference Result 83478 states and 114969 transitions. [2022-12-14 15:28:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 15:28:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-14 15:28:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:28:06,429 INFO L225 Difference]: With dead ends: 83478 [2022-12-14 15:28:06,429 INFO L226 Difference]: Without dead ends: 76594 [2022-12-14 15:28:06,448 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 [2022-12-14 15:28:06,448 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 6016 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6016 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 15:28:06,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6016 Valid, 1563 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 15:28:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76594 states. [2022-12-14 15:28:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76594 to 19005. [2022-12-14 15:28:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19005 states, 18999 states have (on average 1.3679141007421443) internal successors, (25989), 19004 states have internal predecessors, (25989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:09,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19005 states to 19005 states and 25989 transitions. [2022-12-14 15:28:09,500 INFO L78 Accepts]: Start accepts. Automaton has 19005 states and 25989 transitions. Word has length 78 [2022-12-14 15:28:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:28:09,500 INFO L495 AbstractCegarLoop]: Abstraction has 19005 states and 25989 transitions. [2022-12-14 15:28:09,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 19005 states and 25989 transitions. [2022-12-14 15:28:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 15:28:09,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:09,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:28:09,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 15:28:09,506 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:28:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash 368267107, now seen corresponding path program 1 times [2022-12-14 15:28:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:09,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363486771] [2022-12-14 15:28:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:28:09,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:09,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363486771] [2022-12-14 15:28:09,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363486771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:28:09,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:28:09,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:28:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457199492] [2022-12-14 15:28:09,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:28:09,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:28:09,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:28:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:28:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:28:09,613 INFO L87 Difference]: Start difference. First operand 19005 states and 25989 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:28:23,283 INFO L93 Difference]: Finished difference Result 76708 states and 105343 transitions. [2022-12-14 15:28:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 15:28:23,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-14 15:28:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:28:23,382 INFO L225 Difference]: With dead ends: 76708 [2022-12-14 15:28:23,382 INFO L226 Difference]: Without dead ends: 70118 [2022-12-14 15:28:23,398 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 [2022-12-14 15:28:23,399 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 5731 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5731 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 15:28:23,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5731 Valid, 1546 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 15:28:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70118 states. [2022-12-14 15:28:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70118 to 19305. [2022-12-14 15:28:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19305 states, 19299 states have (on average 1.3675838126327788) internal successors, (26393), 19304 states have internal predecessors, (26393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19305 states to 19305 states and 26393 transitions. [2022-12-14 15:28:26,737 INFO L78 Accepts]: Start accepts. Automaton has 19305 states and 26393 transitions. Word has length 78 [2022-12-14 15:28:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:28:26,737 INFO L495 AbstractCegarLoop]: Abstraction has 19305 states and 26393 transitions. [2022-12-14 15:28:26,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 19305 states and 26393 transitions. [2022-12-14 15:28:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 15:28:26,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:26,743 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] [2022-12-14 15:28:26,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 15:28:26,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:28:26,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1196772921, now seen corresponding path program 1 times [2022-12-14 15:28:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776159866] [2022-12-14 15:28:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:28:26,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:26,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776159866] [2022-12-14 15:28:26,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776159866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:28:26,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:28:26,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:28:26,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117327105] [2022-12-14 15:28:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:28:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:28:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:28:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:28:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:28:26,817 INFO L87 Difference]: Start difference. First operand 19305 states and 26393 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:28:33,960 INFO L93 Difference]: Finished difference Result 51404 states and 70566 transitions. [2022-12-14 15:28:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:28:33,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-14 15:28:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:28:33,995 INFO L225 Difference]: With dead ends: 51404 [2022-12-14 15:28:33,995 INFO L226 Difference]: Without dead ends: 32970 [2022-12-14 15:28:34,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:28:34,010 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 3688 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3688 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:28:34,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3688 Valid, 839 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 15:28:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32970 states. [2022-12-14 15:28:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32970 to 25577. [2022-12-14 15:28:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25577 states, 25571 states have (on average 1.3699894411638185) internal successors, (35032), 25576 states have internal predecessors, (35032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25577 states to 25577 states and 35032 transitions. [2022-12-14 15:28:38,733 INFO L78 Accepts]: Start accepts. Automaton has 25577 states and 35032 transitions. Word has length 79 [2022-12-14 15:28:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:28:38,733 INFO L495 AbstractCegarLoop]: Abstraction has 25577 states and 35032 transitions. [2022-12-14 15:28:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 25577 states and 35032 transitions. [2022-12-14 15:28:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 15:28:38,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:38,740 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] [2022-12-14 15:28:38,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 15:28:38,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:28:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash 404807133, now seen corresponding path program 1 times [2022-12-14 15:28:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:38,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291380656] [2022-12-14 15:28:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:38,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:28:38,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:38,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291380656] [2022-12-14 15:28:38,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291380656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:28:38,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:28:38,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:28:38,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570204604] [2022-12-14 15:28:38,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:28:38,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:28:38,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:28:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:28:38,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:28:38,900 INFO L87 Difference]: Start difference. First operand 25577 states and 35032 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:28:48,343 INFO L93 Difference]: Finished difference Result 43883 states and 60313 transitions. [2022-12-14 15:28:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:28:48,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-14 15:28:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:28:48,394 INFO L225 Difference]: With dead ends: 43883 [2022-12-14 15:28:48,394 INFO L226 Difference]: Without dead ends: 43881 [2022-12-14 15:28:48,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:28:48,403 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 102 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:28:48,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 3378 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:28:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43881 states. [2022-12-14 15:28:53,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43881 to 25575. [2022-12-14 15:28:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25575 states, 25570 states have (on average 1.3685960109503323) internal successors, (34995), 25574 states have internal predecessors, (34995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25575 states to 25575 states and 34995 transitions. [2022-12-14 15:28:53,615 INFO L78 Accepts]: Start accepts. Automaton has 25575 states and 34995 transitions. Word has length 79 [2022-12-14 15:28:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:28:53,616 INFO L495 AbstractCegarLoop]: Abstraction has 25575 states and 34995 transitions. [2022-12-14 15:28:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:28:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 25575 states and 34995 transitions. [2022-12-14 15:28:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 15:28:53,622 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:53,622 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] [2022-12-14 15:28:53,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 15:28:53,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:28:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:53,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1278563792, now seen corresponding path program 1 times [2022-12-14 15:28:53,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:53,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631821125] [2022-12-14 15:28:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:53,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:28:53,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631821125] [2022-12-14 15:28:53,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631821125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:28:53,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:28:53,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:28:53,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455025043] [2022-12-14 15:28:53,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:28:53,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:28:53,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:28:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:28:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:28:53,767 INFO L87 Difference]: Start difference. First operand 25575 states and 34995 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:29:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:29:03,437 INFO L93 Difference]: Finished difference Result 43881 states and 60276 transitions. [2022-12-14 15:29:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:29:03,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-14 15:29:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:29:03,487 INFO L225 Difference]: With dead ends: 43881 [2022-12-14 15:29:03,487 INFO L226 Difference]: Without dead ends: 43879 [2022-12-14 15:29:03,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:29:03,496 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 102 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:29:03,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 3373 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:29:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43879 states. [2022-12-14 15:29:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43879 to 25573. [2022-12-14 15:29:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25573 states, 25569 states have (on average 1.3672024717431264) internal successors, (34958), 25572 states have internal predecessors, (34958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:29:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25573 states to 25573 states and 34958 transitions. [2022-12-14 15:29:10,218 INFO L78 Accepts]: Start accepts. Automaton has 25573 states and 34958 transitions. Word has length 79 [2022-12-14 15:29:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:29:10,218 INFO L495 AbstractCegarLoop]: Abstraction has 25573 states and 34958 transitions. [2022-12-14 15:29:10,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:29:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 25573 states and 34958 transitions. [2022-12-14 15:29:10,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 15:29:10,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:29:10,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:29:10,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 15:29:10,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:29:10,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:29:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2107548730, now seen corresponding path program 1 times [2022-12-14 15:29:10,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:29:10,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050115678] [2022-12-14 15:29:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:29:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:29:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:29:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:29:10,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:29:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050115678] [2022-12-14 15:29:10,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050115678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:29:10,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:29:10,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:29:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691806480] [2022-12-14 15:29:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:29:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:29:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:29:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:29:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:29:10,333 INFO L87 Difference]: Start difference. First operand 25573 states and 34958 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:29:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:29:21,722 INFO L93 Difference]: Finished difference Result 69276 states and 94795 transitions. [2022-12-14 15:29:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:29:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-14 15:29:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:29:21,777 INFO L225 Difference]: With dead ends: 69276 [2022-12-14 15:29:21,777 INFO L226 Difference]: Without dead ends: 44507 [2022-12-14 15:29:21,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:29:21,796 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 3274 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:29:21,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 682 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:29:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44507 states. [2022-12-14 15:29:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44507 to 44501. [2022-12-14 15:29:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44501 states, 44497 states have (on average 1.3577319819313662) internal successors, (60415), 44500 states have internal predecessors, (60415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:29:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44501 states to 44501 states and 60415 transitions. [2022-12-14 15:29:32,389 INFO L78 Accepts]: Start accepts. Automaton has 44501 states and 60415 transitions. Word has length 79 [2022-12-14 15:29:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:29:32,389 INFO L495 AbstractCegarLoop]: Abstraction has 44501 states and 60415 transitions. [2022-12-14 15:29:32,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:29:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 44501 states and 60415 transitions. [2022-12-14 15:29:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 15:29:32,395 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:29:32,395 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] [2022-12-14 15:29:32,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 15:29:32,395 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:29:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:29:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash 962616176, now seen corresponding path program 1 times [2022-12-14 15:29:32,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:29:32,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763336534] [2022-12-14 15:29:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:29:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:29:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:29:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:29:32,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:29:32,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763336534] [2022-12-14 15:29:32,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763336534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:29:32,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:29:32,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:29:32,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955372180] [2022-12-14 15:29:32,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:29:32,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:29:32,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:29:32,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:29:32,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:29:32,520 INFO L87 Difference]: Start difference. First operand 44501 states and 60415 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:30:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:18,913 INFO L93 Difference]: Finished difference Result 180213 states and 243769 transitions. [2022-12-14 15:30:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 15:30:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-14 15:30:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:19,192 INFO L225 Difference]: With dead ends: 180213 [2022-12-14 15:30:19,193 INFO L226 Difference]: Without dead ends: 159781 [2022-12-14 15:30:19,308 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 [2022-12-14 15:30:19,308 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 5648 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5648 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:19,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5648 Valid, 1483 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 15:30:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159781 states. [2022-12-14 15:30:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159781 to 44585. [2022-12-14 15:30:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44585 states, 44581 states have (on average 1.3575962854130683) internal successors, (60523), 44584 states have internal predecessors, (60523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:30:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44585 states to 44585 states and 60523 transitions. [2022-12-14 15:30:32,843 INFO L78 Accepts]: Start accepts. Automaton has 44585 states and 60523 transitions. Word has length 80 [2022-12-14 15:30:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:32,843 INFO L495 AbstractCegarLoop]: Abstraction has 44585 states and 60523 transitions. [2022-12-14 15:30:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:30:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 44585 states and 60523 transitions. [2022-12-14 15:30:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 15:30:32,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:32,849 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] [2022-12-14 15:30:32,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 15:30:32,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:30:32,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1928103402, now seen corresponding path program 1 times [2022-12-14 15:30:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:32,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272704309] [2022-12-14 15:30:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:32,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:30:32,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:32,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272704309] [2022-12-14 15:30:32,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272704309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:32,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:32,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:30:32,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153680291] [2022-12-14 15:30:32,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:32,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:30:32,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:30:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:30:32,940 INFO L87 Difference]: Start difference. First operand 44585 states and 60523 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:31:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:33,172 INFO L93 Difference]: Finished difference Result 194170 states and 262915 transitions. [2022-12-14 15:31:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 15:31:33,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-14 15:31:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:33,483 INFO L225 Difference]: With dead ends: 194170 [2022-12-14 15:31:33,483 INFO L226 Difference]: Without dead ends: 175382 [2022-12-14 15:31:33,536 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 [2022-12-14 15:31:33,537 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 5314 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:33,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5314 Valid, 1549 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 15:31:33,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175382 states. [2022-12-14 15:31:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175382 to 45092. [2022-12-14 15:31:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45092 states, 45088 states have (on average 1.3575452448545067) internal successors, (61209), 45091 states have internal predecessors, (61209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:31:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45092 states to 45092 states and 61209 transitions. [2022-12-14 15:31:48,822 INFO L78 Accepts]: Start accepts. Automaton has 45092 states and 61209 transitions. Word has length 80 [2022-12-14 15:31:48,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:48,822 INFO L495 AbstractCegarLoop]: Abstraction has 45092 states and 61209 transitions. [2022-12-14 15:31:48,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:31:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 45092 states and 61209 transitions. [2022-12-14 15:31:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 15:31:48,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:48,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:48,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 15:31:48,832 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:31:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1939475610, now seen corresponding path program 1 times [2022-12-14 15:31:48,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:48,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953348327] [2022-12-14 15:31:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:31:48,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:48,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953348327] [2022-12-14 15:31:48,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953348327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:48,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:48,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:31:48,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587227801] [2022-12-14 15:31:48,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:48,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:31:48,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:31:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:31:48,990 INFO L87 Difference]: Start difference. First operand 45092 states and 61209 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:32:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:32:17,123 INFO L93 Difference]: Finished difference Result 81702 states and 111386 transitions. [2022-12-14 15:32:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:32:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-12-14 15:32:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:32:17,236 INFO L225 Difference]: With dead ends: 81702 [2022-12-14 15:32:17,236 INFO L226 Difference]: Without dead ends: 81700 [2022-12-14 15:32:17,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:32:17,252 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 102 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:32:17,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 3223 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:32:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81700 states. [2022-12-14 15:32:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81700 to 45090. [2022-12-14 15:32:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45090 states, 45087 states have (on average 1.356355490496152) internal successors, (61154), 45089 states have internal predecessors, (61154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:32:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45090 states to 45090 states and 61154 transitions. [2022-12-14 15:32:32,551 INFO L78 Accepts]: Start accepts. Automaton has 45090 states and 61154 transitions. Word has length 81 [2022-12-14 15:32:32,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:32:32,551 INFO L495 AbstractCegarLoop]: Abstraction has 45090 states and 61154 transitions. [2022-12-14 15:32:32,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:32:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 45090 states and 61154 transitions. [2022-12-14 15:32:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 15:32:32,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:32:32,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:32:32,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 15:32:32,559 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:32:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:32:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash 590714783, now seen corresponding path program 1 times [2022-12-14 15:32:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:32:32,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733957950] [2022-12-14 15:32:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:32:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:32:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:32:32,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:32:32,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733957950] [2022-12-14 15:32:32,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733957950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:32:32,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:32:32,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:32:32,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558561093] [2022-12-14 15:32:32,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:32:32,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:32:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:32:32,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:32:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:32:32,679 INFO L87 Difference]: Start difference. First operand 45090 states and 61154 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:33:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:02,302 INFO L93 Difference]: Finished difference Result 81700 states and 111331 transitions. [2022-12-14 15:33:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:33:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-12-14 15:33:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:02,414 INFO L225 Difference]: With dead ends: 81700 [2022-12-14 15:33:02,414 INFO L226 Difference]: Without dead ends: 81698 [2022-12-14 15:33:02,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:33:02,430 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 102 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:02,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 3217 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:33:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81698 states. [2022-12-14 15:33:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81698 to 45088. [2022-12-14 15:33:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45088 states, 45086 states have (on average 1.3551656833606884) internal successors, (61099), 45087 states have internal predecessors, (61099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:33:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45088 states to 45088 states and 61099 transitions. [2022-12-14 15:33:18,551 INFO L78 Accepts]: Start accepts. Automaton has 45088 states and 61099 transitions. Word has length 81 [2022-12-14 15:33:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:18,552 INFO L495 AbstractCegarLoop]: Abstraction has 45088 states and 61099 transitions. [2022-12-14 15:33:18,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:33:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 45088 states and 61099 transitions. [2022-12-14 15:33:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 15:33:18,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:18,560 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] [2022-12-14 15:33:18,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 15:33:18,560 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:33:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -735836713, now seen corresponding path program 1 times [2022-12-14 15:33:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:18,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697080763] [2022-12-14 15:33:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:18,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:18,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697080763] [2022-12-14 15:33:18,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697080763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:18,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:18,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 15:33:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753809592] [2022-12-14 15:33:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 15:33:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 15:33:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 15:33:18,805 INFO L87 Difference]: Start difference. First operand 45088 states and 61099 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 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) [2022-12-14 15:34:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:34:03,191 INFO L93 Difference]: Finished difference Result 140733 states and 190735 transitions. [2022-12-14 15:34:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 15:34:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 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 [2022-12-14 15:34:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:34:03,365 INFO L225 Difference]: With dead ends: 140733 [2022-12-14 15:34:03,366 INFO L226 Difference]: Without dead ends: 104111 [2022-12-14 15:34:03,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 15:34:03,406 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 3981 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3981 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:34:03,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3981 Valid, 2780 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 15:34:03,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104111 states. [2022-12-14 15:34:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104111 to 45082. [2022-12-14 15:34:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45082 states, 45080 states have (on average 1.354946761313221) internal successors, (61081), 45081 states have internal predecessors, (61081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:34:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45082 states to 45082 states and 61081 transitions. [2022-12-14 15:34:20,996 INFO L78 Accepts]: Start accepts. Automaton has 45082 states and 61081 transitions. Word has length 82 [2022-12-14 15:34:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:34:20,997 INFO L495 AbstractCegarLoop]: Abstraction has 45082 states and 61081 transitions. [2022-12-14 15:34:20,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 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) [2022-12-14 15:34:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 45082 states and 61081 transitions. [2022-12-14 15:34:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 15:34:21,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:34:21,005 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] [2022-12-14 15:34:21,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 15:34:21,005 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:34:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:34:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1423178599, now seen corresponding path program 1 times [2022-12-14 15:34:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:34:21,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631048983] [2022-12-14 15:34:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:34:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:34:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:34:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:34:21,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:34:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631048983] [2022-12-14 15:34:21,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631048983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:34:21,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:34:21,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:34:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066171866] [2022-12-14 15:34:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:34:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:34:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:34:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:34:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:34:21,133 INFO L87 Difference]: Start difference. First operand 45082 states and 61081 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2022-12-14 15:34:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:34:54,760 INFO L93 Difference]: Finished difference Result 81692 states and 111258 transitions. [2022-12-14 15:34:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:34:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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 [2022-12-14 15:34:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:34:54,873 INFO L225 Difference]: With dead ends: 81692 [2022-12-14 15:34:54,873 INFO L226 Difference]: Without dead ends: 81690 [2022-12-14 15:34:54,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:34:54,891 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 102 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:34:54,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 3208 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:34:54,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81690 states. [2022-12-14 15:35:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81690 to 45080. [2022-12-14 15:35:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45080 states, 45079 states have (on average 1.3531577896581557) internal successors, (60999), 45079 states have internal predecessors, (60999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:35:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45080 states to 45080 states and 60999 transitions. [2022-12-14 15:35:12,810 INFO L78 Accepts]: Start accepts. Automaton has 45080 states and 60999 transitions. Word has length 83 [2022-12-14 15:35:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:35:12,810 INFO L495 AbstractCegarLoop]: Abstraction has 45080 states and 60999 transitions. [2022-12-14 15:35:12,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2022-12-14 15:35:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 45080 states and 60999 transitions. [2022-12-14 15:35:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 15:35:12,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:35:12,818 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] [2022-12-14 15:35:12,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 15:35:12,819 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:35:12,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:35:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash -67163542, now seen corresponding path program 1 times [2022-12-14 15:35:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:35:12,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263243074] [2022-12-14 15:35:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:35:12,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:35:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:35:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:35:13,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:35:13,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263243074] [2022-12-14 15:35:13,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263243074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:35:13,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:35:13,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 15:35:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438524330] [2022-12-14 15:35:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:35:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 15:35:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:35:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 15:35:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 15:35:13,253 INFO L87 Difference]: Start difference. First operand 45080 states and 60999 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2022-12-14 15:36:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:36:54,473 INFO L93 Difference]: Finished difference Result 242286 states and 329802 transitions. [2022-12-14 15:36:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 15:36:54,474 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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 [2022-12-14 15:36:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:36:54,861 INFO L225 Difference]: With dead ends: 242286 [2022-12-14 15:36:54,862 INFO L226 Difference]: Without dead ends: 205070 [2022-12-14 15:36:54,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-12-14 15:36:54,930 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 6108 mSDsluCounter, 6398 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6108 SdHoareTripleChecker+Valid, 7760 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 15:36:54,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6108 Valid, 7760 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 15:36:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205070 states. [2022-12-14 15:37:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205070 to 44454. [2022-12-14 15:37:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44454 states, 44453 states have (on average 1.3536769171934402) internal successors, (60175), 44453 states have internal predecessors, (60175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:37:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44454 states to 44454 states and 60175 transitions. [2022-12-14 15:37:17,995 INFO L78 Accepts]: Start accepts. Automaton has 44454 states and 60175 transitions. Word has length 83 [2022-12-14 15:37:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:37:17,996 INFO L495 AbstractCegarLoop]: Abstraction has 44454 states and 60175 transitions. [2022-12-14 15:37:17,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2022-12-14 15:37:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 44454 states and 60175 transitions. [2022-12-14 15:37:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 15:37:18,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:37:18,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:37:18,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 15:37:18,003 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:37:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:37:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2019204519, now seen corresponding path program 1 times [2022-12-14 15:37:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:37:18,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336845498] [2022-12-14 15:37:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:37:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:37:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:37:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:37:18,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:37:18,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336845498] [2022-12-14 15:37:18,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336845498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:37:18,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:37:18,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 15:37:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61031391] [2022-12-14 15:37:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:37:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 15:37:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:37:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 15:37:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 15:37:18,215 INFO L87 Difference]: Start difference. First operand 44454 states and 60175 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:38:15,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:38:15,381 INFO L93 Difference]: Finished difference Result 140742 states and 190714 transitions. [2022-12-14 15:38:15,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 15:38:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-12-14 15:38:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:38:15,549 INFO L225 Difference]: With dead ends: 140742 [2022-12-14 15:38:15,549 INFO L226 Difference]: Without dead ends: 104064 [2022-12-14 15:38:15,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 15:38:15,589 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 3877 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3877 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:38:15,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3877 Valid, 2659 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 15:38:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104064 states. [2022-12-14 15:38:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104064 to 44420. [2022-12-14 15:38:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44420 states, 44419 states have (on average 1.3535424030257321) internal successors, (60123), 44419 states have internal predecessors, (60123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:38:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44420 states to 44420 states and 60123 transitions. [2022-12-14 15:38:38,675 INFO L78 Accepts]: Start accepts. Automaton has 44420 states and 60123 transitions. Word has length 84 [2022-12-14 15:38:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:38:38,676 INFO L495 AbstractCegarLoop]: Abstraction has 44420 states and 60123 transitions. [2022-12-14 15:38:38,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:38:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 44420 states and 60123 transitions. [2022-12-14 15:38:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 15:38:38,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:38:38,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:38:38,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 15:38:38,684 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 15:38:38,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:38:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash 956681155, now seen corresponding path program 1 times [2022-12-14 15:38:38,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:38:38,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518690047] [2022-12-14 15:38:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:38:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:38:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:38:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:38:38,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:38:38,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518690047] [2022-12-14 15:38:38,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518690047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:38:38,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:38:38,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:38:38,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704728237] [2022-12-14 15:38:38,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:38:38,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:38:38,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:38:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:38:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:38:38,765 INFO L87 Difference]: Start difference. First operand 44420 states and 60123 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)