./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI --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 f1b965f33911949d5293afac2c8bd242d07bfd4e9981eefc7864b2608138df3f --- 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-5e519f3 [2022-11-03 03:51:27,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:51:27,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:51:27,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:51:27,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:51:27,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:51:27,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:51:27,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:51:27,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:51:27,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:51:27,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:51:27,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:51:27,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:51:27,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:51:27,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:51:27,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:51:27,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:51:27,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:51:27,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:51:27,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:51:27,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:51:27,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:51:27,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:51:27,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:51:27,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:51:27,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:51:27,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:51:27,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:51:27,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:51:27,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:51:27,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:51:27,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:51:27,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:51:27,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:51:27,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:51:27,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:51:27,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:51:27,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:51:27,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:51:27,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:51:27,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:51:27,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:51:27,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:51:27,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:51:27,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:51:27,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:51:27,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:51:27,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:51:27,920 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:51:27,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:51:27,920 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:51:27,920 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:51:27,921 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:51:27,921 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:51:27,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:51:27,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:51:27,922 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:51:27,922 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:51:27,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:51:27,923 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:51:27,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:51:27,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:51:27,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:51:27,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:51:27,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:51:27,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:51:27,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:51:27,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:51:27,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:51:27,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:51:27,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:51:27,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:51:27,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:51:27,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:51:27,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:27,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:51:27,928 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:51:27,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:51:27,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:51:27,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:51:27,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:51:27,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:51:27,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:51:27,930 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_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b965f33911949d5293afac2c8bd242d07bfd4e9981eefc7864b2608138df3f [2022-11-03 03:51:28,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:51:28,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:51:28,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:51:28,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:51:28,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:51:28,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-03 03:51:28,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/data/0813588a2/03d39ed9185c47b685369eba749370b2/FLAG6513cf3e8 [2022-11-03 03:51:29,205 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:51:29,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-03 03:51:29,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/data/0813588a2/03d39ed9185c47b685369eba749370b2/FLAG6513cf3e8 [2022-11-03 03:51:29,286 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/data/0813588a2/03d39ed9185c47b685369eba749370b2 [2022-11-03 03:51:29,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:51:29,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:51:29,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:29,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:51:29,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:51:29,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:29" (1/1) ... [2022-11-03 03:51:29,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440c86bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:29, skipping insertion in model container [2022-11-03 03:51:29,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:29" (1/1) ... [2022-11-03 03:51:29,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:51:29,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:51:29,889 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11900,11913] [2022-11-03 03:51:29,943 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18638,18651] [2022-11-03 03:51:29,957 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20836,20849] [2022-11-03 03:51:29,964 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21913,21926] [2022-11-03 03:51:29,987 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25266,25279] [2022-11-03 03:51:30,002 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26346,26359] [2022-11-03 03:51:30,023 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28575,28588] [2022-11-03 03:51:30,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:30,517 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:51:30,576 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11900,11913] [2022-11-03 03:51:30,595 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18638,18651] [2022-11-03 03:51:30,603 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20836,20849] [2022-11-03 03:51:30,608 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21913,21926] [2022-11-03 03:51:30,619 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25266,25279] [2022-11-03 03:51:30,624 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26346,26359] [2022-11-03 03:51:30,633 WARN L230 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_f7e5f4da-7202-4b00-9616-837e13825089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28575,28588] [2022-11-03 03:51:30,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:30,959 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:51:30,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30 WrapperNode [2022-11-03 03:51:30,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:30,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:30,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:51:30,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:51:30,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,163 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6527 [2022-11-03 03:51:31,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:31,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:51:31,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:51:31,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:51:31,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:51:31,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:51:31,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:51:31,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:51:31,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2022-11-03 03:51:31,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:31,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:31,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:51:31,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e5f4da-7202-4b00-9616-837e13825089/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:51:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:51:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:51:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:51:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:51:31,788 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:51:31,790 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:51:34,866 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:51:35,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:51:35,278 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:51:35,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:35 BoogieIcfgContainer [2022-11-03 03:51:35,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:51:35,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:51:35,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:51:35,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:51:35,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:51:29" (1/3) ... [2022-11-03 03:51:35,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f4320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:35, skipping insertion in model container [2022-11-03 03:51:35,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (2/3) ... [2022-11-03 03:51:35,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f4320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:35, skipping insertion in model container [2022-11-03 03:51:35,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:35" (3/3) ... [2022-11-03 03:51:35,293 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-03 03:51:35,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:51:35,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-03 03:51:35,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:51:35,415 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;@27a77768, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:51:35,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-03 03:51:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 1054 states, 1046 states have (on average 1.8948374760994264) internal successors, (1982), 1053 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 03:51:35,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:35,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:35,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash -966255617, now seen corresponding path program 1 times [2022-11-03 03:51:35,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:35,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442066720] [2022-11-03 03:51:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:35,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:36,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:36,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442066720] [2022-11-03 03:51:36,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442066720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:36,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:36,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527169546] [2022-11-03 03:51:36,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:36,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:36,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:36,194 INFO L87 Difference]: Start difference. First operand has 1054 states, 1046 states have (on average 1.8948374760994264) internal successors, (1982), 1053 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:37,378 INFO L93 Difference]: Finished difference Result 1560 states and 2852 transitions. [2022-11-03 03:51:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:51:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 03:51:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:37,400 INFO L225 Difference]: With dead ends: 1560 [2022-11-03 03:51:37,400 INFO L226 Difference]: Without dead ends: 985 [2022-11-03 03:51:37,405 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 [2022-11-03 03:51:37,408 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 5019 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5019 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:37,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5019 Valid, 1240 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:51:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-11-03 03:51:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 977. [2022-11-03 03:51:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 970 states have (on average 1.288659793814433) internal successors, (1250), 976 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1250 transitions. [2022-11-03 03:51:37,499 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1250 transitions. Word has length 62 [2022-11-03 03:51:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:37,499 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1250 transitions. [2022-11-03 03:51:37,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1250 transitions. [2022-11-03 03:51:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 03:51:37,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:37,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:37,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:51:37,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1187989298, now seen corresponding path program 1 times [2022-11-03 03:51:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:37,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62369226] [2022-11-03 03:51:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:37,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:37,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:37,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62369226] [2022-11-03 03:51:37,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62369226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:37,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:37,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:37,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777186709] [2022-11-03 03:51:37,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:37,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:37,622 INFO L87 Difference]: Start difference. First operand 977 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:37,836 INFO L93 Difference]: Finished difference Result 1420 states and 1870 transitions. [2022-11-03 03:51:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:37,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 03:51:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:37,843 INFO L225 Difference]: With dead ends: 1420 [2022-11-03 03:51:37,844 INFO L226 Difference]: Without dead ends: 1207 [2022-11-03 03:51:37,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:37,847 INFO L413 NwaCegarLoop]: 1080 mSDtfsCounter, 524 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:37,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1765 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-11-03 03:51:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1199. [2022-11-03 03:51:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1192 states have (on average 1.308724832214765) internal successors, (1560), 1198 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1560 transitions. [2022-11-03 03:51:37,933 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1560 transitions. Word has length 62 [2022-11-03 03:51:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:37,934 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1560 transitions. [2022-11-03 03:51:37,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1560 transitions. [2022-11-03 03:51:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 03:51:37,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:37,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:37,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:51:37,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:37,950 INFO L85 PathProgramCache]: Analyzing trace with hash -369366517, now seen corresponding path program 1 times [2022-11-03 03:51:37,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:37,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811484637] [2022-11-03 03:51:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:37,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:38,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:38,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811484637] [2022-11-03 03:51:38,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811484637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:38,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:38,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:38,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211033464] [2022-11-03 03:51:38,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:38,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:38,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:38,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:38,070 INFO L87 Difference]: Start difference. First operand 1199 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:38,306 INFO L93 Difference]: Finished difference Result 1898 states and 2558 transitions. [2022-11-03 03:51:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:38,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 03:51:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:38,315 INFO L225 Difference]: With dead ends: 1898 [2022-11-03 03:51:38,315 INFO L226 Difference]: Without dead ends: 1524 [2022-11-03 03:51:38,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:38,319 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 659 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:38,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1661 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-11-03 03:51:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1516. [2022-11-03 03:51:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1509 states have (on average 1.333996023856859) internal successors, (2013), 1515 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2013 transitions. [2022-11-03 03:51:38,420 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2013 transitions. Word has length 62 [2022-11-03 03:51:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:38,421 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 2013 transitions. [2022-11-03 03:51:38,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2013 transitions. [2022-11-03 03:51:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 03:51:38,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:38,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:38,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:51:38,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:38,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1656441469, now seen corresponding path program 1 times [2022-11-03 03:51:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:38,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900496597] [2022-11-03 03:51:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:38,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900496597] [2022-11-03 03:51:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900496597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:38,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:38,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985120506] [2022-11-03 03:51:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:38,622 INFO L87 Difference]: Start difference. First operand 1516 states and 2013 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:39,401 INFO L93 Difference]: Finished difference Result 3183 states and 4339 transitions. [2022-11-03 03:51:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:51:39,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 03:51:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:39,408 INFO L225 Difference]: With dead ends: 3183 [2022-11-03 03:51:39,408 INFO L226 Difference]: Without dead ends: 1914 [2022-11-03 03:51:39,410 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 [2022-11-03 03:51:39,417 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 2714 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:39,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 655 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:51:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2022-11-03 03:51:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1906. [2022-11-03 03:51:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1899 states have (on average 1.3696682464454977) internal successors, (2601), 1905 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2601 transitions. [2022-11-03 03:51:39,580 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2601 transitions. Word has length 62 [2022-11-03 03:51:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:39,581 INFO L495 AbstractCegarLoop]: Abstraction has 1906 states and 2601 transitions. [2022-11-03 03:51:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2601 transitions. [2022-11-03 03:51:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:51:39,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:39,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:39,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:51:39,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:39,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1951931054, now seen corresponding path program 1 times [2022-11-03 03:51:39,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:39,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136448512] [2022-11-03 03:51:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:39,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:39,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136448512] [2022-11-03 03:51:39,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136448512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:39,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:39,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:39,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219430164] [2022-11-03 03:51:39,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:39,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:39,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:39,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:39,709 INFO L87 Difference]: Start difference. First operand 1906 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:40,148 INFO L93 Difference]: Finished difference Result 4627 states and 6409 transitions. [2022-11-03 03:51:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-03 03:51:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:40,161 INFO L225 Difference]: With dead ends: 4627 [2022-11-03 03:51:40,161 INFO L226 Difference]: Without dead ends: 3202 [2022-11-03 03:51:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:40,165 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 692 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:40,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1637 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:51:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2022-11-03 03:51:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3194. [2022-11-03 03:51:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3187 states have (on average 1.3702541575149043) internal successors, (4367), 3193 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4367 transitions. [2022-11-03 03:51:40,576 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4367 transitions. Word has length 63 [2022-11-03 03:51:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:40,577 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 4367 transitions. [2022-11-03 03:51:40,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4367 transitions. [2022-11-03 03:51:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:51:40,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:40,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:51:40,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:40,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 55124087, now seen corresponding path program 1 times [2022-11-03 03:51:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:40,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660503478] [2022-11-03 03:51:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:40,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660503478] [2022-11-03 03:51:40,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660503478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:40,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:40,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:40,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601375563] [2022-11-03 03:51:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:40,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:40,716 INFO L87 Difference]: Start difference. First operand 3194 states and 4367 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:41,777 INFO L93 Difference]: Finished difference Result 7305 states and 10123 transitions. [2022-11-03 03:51:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:51:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-03 03:51:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:41,792 INFO L225 Difference]: With dead ends: 7305 [2022-11-03 03:51:41,792 INFO L226 Difference]: Without dead ends: 4597 [2022-11-03 03:51:41,798 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 [2022-11-03 03:51:41,799 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2360 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:41,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 517 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:51:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2022-11-03 03:51:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4589. [2022-11-03 03:51:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4589 states, 4582 states have (on average 1.3731994762112614) internal successors, (6292), 4588 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4589 states to 4589 states and 6292 transitions. [2022-11-03 03:51:42,351 INFO L78 Accepts]: Start accepts. Automaton has 4589 states and 6292 transitions. Word has length 63 [2022-11-03 03:51:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:42,351 INFO L495 AbstractCegarLoop]: Abstraction has 4589 states and 6292 transitions. [2022-11-03 03:51:42,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4589 states and 6292 transitions. [2022-11-03 03:51:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 03:51:42,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:42,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:42,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:51:42,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:42,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1411626804, now seen corresponding path program 1 times [2022-11-03 03:51:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:42,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218458858] [2022-11-03 03:51:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:42,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:42,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:42,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218458858] [2022-11-03 03:51:42,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218458858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:42,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:42,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967456340] [2022-11-03 03:51:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:42,488 INFO L87 Difference]: Start difference. First operand 4589 states and 6292 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:43,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:43,853 INFO L93 Difference]: Finished difference Result 12035 states and 16719 transitions. [2022-11-03 03:51:43,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:51:43,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 03:51:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:43,883 INFO L225 Difference]: With dead ends: 12035 [2022-11-03 03:51:43,883 INFO L226 Difference]: Without dead ends: 7683 [2022-11-03 03:51:43,890 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 [2022-11-03 03:51:43,891 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2034 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:43,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 501 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:51:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7683 states. [2022-11-03 03:51:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7683 to 7675. [2022-11-03 03:51:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7675 states, 7668 states have (on average 1.3776734480959834) internal successors, (10564), 7674 states have internal predecessors, (10564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7675 states to 7675 states and 10564 transitions. [2022-11-03 03:51:44,751 INFO L78 Accepts]: Start accepts. Automaton has 7675 states and 10564 transitions. Word has length 64 [2022-11-03 03:51:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:44,752 INFO L495 AbstractCegarLoop]: Abstraction has 7675 states and 10564 transitions. [2022-11-03 03:51:44,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7675 states and 10564 transitions. [2022-11-03 03:51:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:51:44,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:44,757 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] [2022-11-03 03:51:44,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:51:44,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash 257868933, now seen corresponding path program 1 times [2022-11-03 03:51:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:44,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272988088] [2022-11-03 03:51:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:44,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:44,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:44,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272988088] [2022-11-03 03:51:44,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272988088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:44,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:44,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:44,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116420767] [2022-11-03 03:51:44,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:44,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:44,870 INFO L87 Difference]: Start difference. First operand 7675 states and 10564 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:46,200 INFO L93 Difference]: Finished difference Result 19281 states and 26751 transitions. [2022-11-03 03:51:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:46,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-03 03:51:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:46,245 INFO L225 Difference]: With dead ends: 19281 [2022-11-03 03:51:46,245 INFO L226 Difference]: Without dead ends: 12762 [2022-11-03 03:51:46,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:46,255 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 451 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:46,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1173 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2022-11-03 03:51:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 12754. [2022-11-03 03:51:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12754 states, 12747 states have (on average 1.3702832038911117) internal successors, (17467), 12753 states have internal predecessors, (17467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12754 states to 12754 states and 17467 transitions. [2022-11-03 03:51:47,846 INFO L78 Accepts]: Start accepts. Automaton has 12754 states and 17467 transitions. Word has length 65 [2022-11-03 03:51:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:47,846 INFO L495 AbstractCegarLoop]: Abstraction has 12754 states and 17467 transitions. [2022-11-03 03:51:47,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 12754 states and 17467 transitions. [2022-11-03 03:51:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 03:51:47,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:47,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:51:47,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:47,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash 868506865, now seen corresponding path program 1 times [2022-11-03 03:51:47,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:47,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154551437] [2022-11-03 03:51:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:47,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:48,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154551437] [2022-11-03 03:51:48,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154551437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:48,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:48,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:51:48,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67896636] [2022-11-03 03:51:48,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:48,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:51:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:48,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:51:48,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:48,028 INFO L87 Difference]: Start difference. First operand 12754 states and 17467 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:53,285 INFO L93 Difference]: Finished difference Result 47317 states and 65267 transitions. [2022-11-03 03:51:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:51:53,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 03:51:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:53,406 INFO L225 Difference]: With dead ends: 47317 [2022-11-03 03:51:53,407 INFO L226 Difference]: Without dead ends: 42028 [2022-11-03 03:51:53,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:51:53,423 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 3551 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:53,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 886 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:51:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42028 states. [2022-11-03 03:51:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42028 to 12782. [2022-11-03 03:51:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12782 states, 12775 states have (on average 1.3700978473581213) internal successors, (17503), 12781 states have internal predecessors, (17503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12782 states to 12782 states and 17503 transitions. [2022-11-03 03:51:56,145 INFO L78 Accepts]: Start accepts. Automaton has 12782 states and 17503 transitions. Word has length 66 [2022-11-03 03:51:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:56,146 INFO L495 AbstractCegarLoop]: Abstraction has 12782 states and 17503 transitions. [2022-11-03 03:51:56,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12782 states and 17503 transitions. [2022-11-03 03:51:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 03:51:56,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:56,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:56,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:51:56,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:51:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash -115804627, now seen corresponding path program 1 times [2022-11-03 03:51:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:56,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569484633] [2022-11-03 03:51:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:56,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:56,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569484633] [2022-11-03 03:51:56,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569484633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:56,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:56,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:51:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683077466] [2022-11-03 03:51:56,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:56,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:51:56,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:56,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:51:56,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:56,343 INFO L87 Difference]: Start difference. First operand 12782 states and 17503 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:04,568 INFO L93 Difference]: Finished difference Result 51912 states and 71926 transitions. [2022-11-03 03:52:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:52:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 03:52:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:04,674 INFO L225 Difference]: With dead ends: 51912 [2022-11-03 03:52:04,674 INFO L226 Difference]: Without dead ends: 47066 [2022-11-03 03:52:04,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:52:04,694 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 2683 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:04,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 1002 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:52:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47066 states. [2022-11-03 03:52:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47066 to 12853. [2022-11-03 03:52:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12853 states, 12846 states have (on average 1.3702319788260937) internal successors, (17602), 12852 states have internal predecessors, (17602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12853 states to 12853 states and 17602 transitions. [2022-11-03 03:52:07,119 INFO L78 Accepts]: Start accepts. Automaton has 12853 states and 17602 transitions. Word has length 66 [2022-11-03 03:52:07,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:07,119 INFO L495 AbstractCegarLoop]: Abstraction has 12853 states and 17602 transitions. [2022-11-03 03:52:07,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:07,120 INFO L276 IsEmpty]: Start isEmpty. Operand 12853 states and 17602 transitions. [2022-11-03 03:52:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 03:52:07,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:07,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:07,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:52:07,128 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:52:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:07,128 INFO L85 PathProgramCache]: Analyzing trace with hash 31518793, now seen corresponding path program 1 times [2022-11-03 03:52:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:07,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005640043] [2022-11-03 03:52:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:07,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:07,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:07,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005640043] [2022-11-03 03:52:07,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005640043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:07,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:07,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:52:07,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268134603] [2022-11-03 03:52:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:07,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:52:07,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:52:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:07,289 INFO L87 Difference]: Start difference. First operand 12853 states and 17602 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:18,996 INFO L93 Difference]: Finished difference Result 66170 states and 91984 transitions. [2022-11-03 03:52:18,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:52:18,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 03:52:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:19,109 INFO L225 Difference]: With dead ends: 66170 [2022-11-03 03:52:19,109 INFO L226 Difference]: Without dead ends: 60886 [2022-11-03 03:52:19,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:52:19,129 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 3934 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3934 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:19,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3934 Valid, 934 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:52:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60886 states. [2022-11-03 03:52:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60886 to 12921. [2022-11-03 03:52:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12921 states, 12914 states have (on average 1.369831190955552) internal successors, (17690), 12920 states have internal predecessors, (17690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12921 states to 12921 states and 17690 transitions. [2022-11-03 03:52:22,143 INFO L78 Accepts]: Start accepts. Automaton has 12921 states and 17690 transitions. Word has length 66 [2022-11-03 03:52:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:22,143 INFO L495 AbstractCegarLoop]: Abstraction has 12921 states and 17690 transitions. [2022-11-03 03:52:22,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12921 states and 17690 transitions. [2022-11-03 03:52:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 03:52:22,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:22,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:22,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:52:22,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:52:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1680186821, now seen corresponding path program 1 times [2022-11-03 03:52:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:22,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832090484] [2022-11-03 03:52:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:22,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:22,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:22,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832090484] [2022-11-03 03:52:22,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832090484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:22,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:22,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:52:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411408064] [2022-11-03 03:52:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:52:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:22,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:52:22,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:22,316 INFO L87 Difference]: Start difference. First operand 12921 states and 17690 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:35,636 INFO L93 Difference]: Finished difference Result 59577 states and 82646 transitions. [2022-11-03 03:52:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:52:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 03:52:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:35,725 INFO L225 Difference]: With dead ends: 59577 [2022-11-03 03:52:35,726 INFO L226 Difference]: Without dead ends: 54365 [2022-11-03 03:52:35,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:52:35,743 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 3594 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3594 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:35,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3594 Valid, 923 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:52:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54365 states. [2022-11-03 03:52:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54365 to 13084. [2022-11-03 03:52:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13084 states, 13077 states have (on average 1.3691978282480692) internal successors, (17905), 13083 states have internal predecessors, (17905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13084 states to 13084 states and 17905 transitions. [2022-11-03 03:52:38,870 INFO L78 Accepts]: Start accepts. Automaton has 13084 states and 17905 transitions. Word has length 66 [2022-11-03 03:52:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:38,870 INFO L495 AbstractCegarLoop]: Abstraction has 13084 states and 17905 transitions. [2022-11-03 03:52:38,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 13084 states and 17905 transitions. [2022-11-03 03:52:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:52:38,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:38,879 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] [2022-11-03 03:52:38,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:52:38,879 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:52:38,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1923868673, now seen corresponding path program 1 times [2022-11-03 03:52:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:38,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53513532] [2022-11-03 03:52:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:39,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53513532] [2022-11-03 03:52:39,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53513532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:39,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:39,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:52:39,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434754964] [2022-11-03 03:52:39,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:39,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:52:39,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:52:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:52:39,313 INFO L87 Difference]: Start difference. First operand 13084 states and 17905 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:49,015 INFO L93 Difference]: Finished difference Result 40779 states and 56170 transitions. [2022-11-03 03:52:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:52:49,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-03 03:52:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:49,071 INFO L225 Difference]: With dead ends: 40779 [2022-11-03 03:52:49,072 INFO L226 Difference]: Without dead ends: 31279 [2022-11-03 03:52:49,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:52:49,084 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 2013 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:49,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2013 Valid, 2026 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:52:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31279 states. [2022-11-03 03:52:52,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31279 to 13072. [2022-11-03 03:52:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13072 states, 13065 states have (on average 1.3686184462303865) internal successors, (17881), 13071 states have internal predecessors, (17881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13072 states to 13072 states and 17881 transitions. [2022-11-03 03:52:52,326 INFO L78 Accepts]: Start accepts. Automaton has 13072 states and 17881 transitions. Word has length 67 [2022-11-03 03:52:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:52,327 INFO L495 AbstractCegarLoop]: Abstraction has 13072 states and 17881 transitions. [2022-11-03 03:52:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13072 states and 17881 transitions. [2022-11-03 03:52:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:52:52,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:52,335 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] [2022-11-03 03:52:52,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:52:52,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:52:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1803782915, now seen corresponding path program 1 times [2022-11-03 03:52:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:52,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420261474] [2022-11-03 03:52:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:52,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:52,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:52,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420261474] [2022-11-03 03:52:52,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420261474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:52,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:52,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:52:52,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803801297] [2022-11-03 03:52:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:52,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:52:52,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:52:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:52:52,632 INFO L87 Difference]: Start difference. First operand 13072 states and 17881 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:02,225 INFO L93 Difference]: Finished difference Result 38469 states and 53008 transitions. [2022-11-03 03:53:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:53:02,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-03 03:53:02,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:02,267 INFO L225 Difference]: With dead ends: 38469 [2022-11-03 03:53:02,268 INFO L226 Difference]: Without dead ends: 28953 [2022-11-03 03:53:02,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:53:02,279 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 2320 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:02,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 1736 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:53:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28953 states. [2022-11-03 03:53:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28953 to 13052. [2022-11-03 03:53:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13052 states, 13045 states have (on average 1.3682637025680338) internal successors, (17849), 13051 states have internal predecessors, (17849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13052 states to 13052 states and 17849 transitions. [2022-11-03 03:53:05,731 INFO L78 Accepts]: Start accepts. Automaton has 13052 states and 17849 transitions. Word has length 67 [2022-11-03 03:53:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:05,731 INFO L495 AbstractCegarLoop]: Abstraction has 13052 states and 17849 transitions. [2022-11-03 03:53:05,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 13052 states and 17849 transitions. [2022-11-03 03:53:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:53:05,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:05,739 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] [2022-11-03 03:53:05,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:53:05,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:53:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -306757220, now seen corresponding path program 1 times [2022-11-03 03:53:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:05,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029722889] [2022-11-03 03:53:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:05,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:05,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:05,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029722889] [2022-11-03 03:53:05,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029722889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:05,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:05,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:05,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101560586] [2022-11-03 03:53:05,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:05,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:05,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:05,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:05,895 INFO L87 Difference]: Start difference. First operand 13052 states and 17849 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:22,299 INFO L93 Difference]: Finished difference Result 52153 states and 72225 transitions. [2022-11-03 03:53:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:53:22,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-03 03:53:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:22,368 INFO L225 Difference]: With dead ends: 52153 [2022-11-03 03:53:22,368 INFO L226 Difference]: Without dead ends: 47293 [2022-11-03 03:53:22,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:53:22,381 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2667 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:22,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 1003 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:53:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47293 states. [2022-11-03 03:53:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47293 to 13143. [2022-11-03 03:53:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13143 states, 13136 states have (on average 1.3685292326431182) internal successors, (17977), 13142 states have internal predecessors, (17977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13143 states to 13143 states and 17977 transitions. [2022-11-03 03:53:26,353 INFO L78 Accepts]: Start accepts. Automaton has 13143 states and 17977 transitions. Word has length 67 [2022-11-03 03:53:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:26,354 INFO L495 AbstractCegarLoop]: Abstraction has 13143 states and 17977 transitions. [2022-11-03 03:53:26,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:26,354 INFO L276 IsEmpty]: Start isEmpty. Operand 13143 states and 17977 transitions. [2022-11-03 03:53:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:53:26,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:26,359 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] [2022-11-03 03:53:26,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:53:26,359 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:53:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1173964284, now seen corresponding path program 1 times [2022-11-03 03:53:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:26,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534205778] [2022-11-03 03:53:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:26,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:26,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534205778] [2022-11-03 03:53:26,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534205778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:26,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:26,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:26,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220481084] [2022-11-03 03:53:26,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:26,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:53:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:26,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:53:26,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:53:26,692 INFO L87 Difference]: Start difference. First operand 13143 states and 17977 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:39,027 INFO L93 Difference]: Finished difference Result 40960 states and 56461 transitions. [2022-11-03 03:53:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:53:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-03 03:53:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:39,068 INFO L225 Difference]: With dead ends: 40960 [2022-11-03 03:53:39,068 INFO L226 Difference]: Without dead ends: 31220 [2022-11-03 03:53:39,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:53:39,079 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2080 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:39,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 2097 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:53:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31220 states. [2022-11-03 03:53:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31220 to 13012. [2022-11-03 03:53:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13012 states, 13005 states have (on average 1.368319876970396) internal successors, (17795), 13011 states have internal predecessors, (17795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13012 states to 13012 states and 17795 transitions. [2022-11-03 03:53:43,161 INFO L78 Accepts]: Start accepts. Automaton has 13012 states and 17795 transitions. Word has length 67 [2022-11-03 03:53:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:43,161 INFO L495 AbstractCegarLoop]: Abstraction has 13012 states and 17795 transitions. [2022-11-03 03:53:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 13012 states and 17795 transitions. [2022-11-03 03:53:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:53:43,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:43,166 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] [2022-11-03 03:53:43,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:53:43,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:53:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1514144732, now seen corresponding path program 1 times [2022-11-03 03:53:43,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:43,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769517201] [2022-11-03 03:53:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:43,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:43,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769517201] [2022-11-03 03:53:43,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769517201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:43,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:43,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:43,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850065881] [2022-11-03 03:53:43,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:43,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:43,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:43,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:43,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:43,476 INFO L87 Difference]: Start difference. First operand 13012 states and 17795 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:53,616 INFO L93 Difference]: Finished difference Result 35425 states and 48915 transitions. [2022-11-03 03:53:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:53:53,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-03 03:53:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:53,652 INFO L225 Difference]: With dead ends: 35425 [2022-11-03 03:53:53,652 INFO L226 Difference]: Without dead ends: 25185 [2022-11-03 03:53:53,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:53:53,660 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2141 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:53,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2141 Valid, 1446 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:53:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2022-11-03 03:53:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 12689. [2022-11-03 03:53:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12689 states, 12682 states have (on average 1.3672133732849707) internal successors, (17339), 12688 states have internal predecessors, (17339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12689 states to 12689 states and 17339 transitions. [2022-11-03 03:53:57,831 INFO L78 Accepts]: Start accepts. Automaton has 12689 states and 17339 transitions. Word has length 67 [2022-11-03 03:53:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:57,831 INFO L495 AbstractCegarLoop]: Abstraction has 12689 states and 17339 transitions. [2022-11-03 03:53:57,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 12689 states and 17339 transitions. [2022-11-03 03:53:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:53:57,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:57,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:57,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:53:57,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:53:57,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash -906901590, now seen corresponding path program 1 times [2022-11-03 03:53:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:57,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589883884] [2022-11-03 03:53:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:58,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:58,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589883884] [2022-11-03 03:53:58,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589883884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:58,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:58,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:53:58,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229526367] [2022-11-03 03:53:58,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:58,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:53:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:53:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:53:58,612 INFO L87 Difference]: Start difference. First operand 12689 states and 17339 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:18,283 INFO L93 Difference]: Finished difference Result 54485 states and 75581 transitions. [2022-11-03 03:54:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:54:18,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-03 03:54:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:18,343 INFO L225 Difference]: With dead ends: 54485 [2022-11-03 03:54:18,343 INFO L226 Difference]: Without dead ends: 44587 [2022-11-03 03:54:18,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:54:18,354 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 2799 mSDsluCounter, 4531 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 5354 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:18,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2799 Valid, 5354 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:54:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44587 states. [2022-11-03 03:54:23,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44587 to 12234. [2022-11-03 03:54:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12229 states have (on average 1.368631940469376) internal successors, (16737), 12233 states have internal predecessors, (16737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 16737 transitions. [2022-11-03 03:54:23,273 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 16737 transitions. Word has length 68 [2022-11-03 03:54:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:23,273 INFO L495 AbstractCegarLoop]: Abstraction has 12234 states and 16737 transitions. [2022-11-03 03:54:23,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 16737 transitions. [2022-11-03 03:54:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:54:23,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:23,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:23,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:54:23,278 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:54:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1518478363, now seen corresponding path program 1 times [2022-11-03 03:54:23,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:23,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797514258] [2022-11-03 03:54:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:23,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:23,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797514258] [2022-11-03 03:54:23,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797514258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:23,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:23,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:54:23,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950143721] [2022-11-03 03:54:23,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:23,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:54:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:54:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:54:23,774 INFO L87 Difference]: Start difference. First operand 12234 states and 16737 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:40,820 INFO L93 Difference]: Finished difference Result 44892 states and 62292 transitions. [2022-11-03 03:54:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:54:40,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-03 03:54:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:40,869 INFO L225 Difference]: With dead ends: 44892 [2022-11-03 03:54:40,869 INFO L226 Difference]: Without dead ends: 35168 [2022-11-03 03:54:40,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:54:40,880 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 2040 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:40,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 2375 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:54:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35168 states. [2022-11-03 03:54:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35168 to 12010. [2022-11-03 03:54:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 12006 states have (on average 1.3676495085790439) internal successors, (16420), 12009 states have internal predecessors, (16420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 16420 transitions. [2022-11-03 03:54:46,250 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 16420 transitions. Word has length 68 [2022-11-03 03:54:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:46,250 INFO L495 AbstractCegarLoop]: Abstraction has 12010 states and 16420 transitions. [2022-11-03 03:54:46,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 16420 transitions. [2022-11-03 03:54:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:54:46,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:46,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 03:54:46,255 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:54:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -289412261, now seen corresponding path program 1 times [2022-11-03 03:54:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:46,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428628802] [2022-11-03 03:54:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:46,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:46,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:46,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428628802] [2022-11-03 03:54:46,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428628802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:46,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:46,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:54:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825272069] [2022-11-03 03:54:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:54:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:54:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:54:46,946 INFO L87 Difference]: Start difference. First operand 12010 states and 16420 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:11,293 INFO L93 Difference]: Finished difference Result 52803 states and 73416 transitions. [2022-11-03 03:55:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:55:11,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-03 03:55:11,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:11,353 INFO L225 Difference]: With dead ends: 52803 [2022-11-03 03:55:11,353 INFO L226 Difference]: Without dead ends: 43309 [2022-11-03 03:55:11,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:55:11,367 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1605 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:11,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 4031 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:55:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43309 states. [2022-11-03 03:55:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43309 to 11990. [2022-11-03 03:55:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11990 states, 11987 states have (on average 1.3667306248435807) internal successors, (16383), 11989 states have internal predecessors, (16383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11990 states to 11990 states and 16383 transitions. [2022-11-03 03:55:17,597 INFO L78 Accepts]: Start accepts. Automaton has 11990 states and 16383 transitions. Word has length 68 [2022-11-03 03:55:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:17,597 INFO L495 AbstractCegarLoop]: Abstraction has 11990 states and 16383 transitions. [2022-11-03 03:55:17,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 11990 states and 16383 transitions. [2022-11-03 03:55:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:55:17,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:17,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:17,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 03:55:17,603 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:55:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:17,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1473571080, now seen corresponding path program 1 times [2022-11-03 03:55:17,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:17,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607590409] [2022-11-03 03:55:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:17,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:17,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607590409] [2022-11-03 03:55:17,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607590409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:17,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:17,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:17,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057920121] [2022-11-03 03:55:17,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:17,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:17,677 INFO L87 Difference]: Start difference. First operand 11990 states and 16383 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:27,228 INFO L93 Difference]: Finished difference Result 22362 states and 30640 transitions. [2022-11-03 03:55:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:27,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 03:55:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:27,247 INFO L225 Difference]: With dead ends: 22362 [2022-11-03 03:55:27,247 INFO L226 Difference]: Without dead ends: 16285 [2022-11-03 03:55:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:27,253 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 337 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 441 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:55:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16285 states. [2022-11-03 03:55:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16285 to 16283. [2022-11-03 03:55:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16283 states, 16282 states have (on average 1.3709003807886009) internal successors, (22321), 16282 states have internal predecessors, (22321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16283 states to 16283 states and 22321 transitions. [2022-11-03 03:55:36,298 INFO L78 Accepts]: Start accepts. Automaton has 16283 states and 22321 transitions. Word has length 70 [2022-11-03 03:55:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:36,298 INFO L495 AbstractCegarLoop]: Abstraction has 16283 states and 22321 transitions. [2022-11-03 03:55:36,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 16283 states and 22321 transitions. [2022-11-03 03:55:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 03:55:36,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:36,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:55:36,307 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:55:36,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 444391276, now seen corresponding path program 1 times [2022-11-03 03:55:36,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:36,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189626644] [2022-11-03 03:55:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:36,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:36,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189626644] [2022-11-03 03:55:36,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189626644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:36,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:36,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:55:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551323296] [2022-11-03 03:55:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:36,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:55:36,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:36,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:55:36,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:55:36,468 INFO L87 Difference]: Start difference. First operand 16283 states and 22321 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:46,049 INFO L93 Difference]: Finished difference Result 23189 states and 31825 transitions. [2022-11-03 03:55:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:55:46,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-03 03:55:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:46,070 INFO L225 Difference]: With dead ends: 23189 [2022-11-03 03:55:46,070 INFO L226 Difference]: Without dead ends: 15878 [2022-11-03 03:55:46,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:55:46,078 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 855 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:46,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1148 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:55:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15878 states. [2022-11-03 03:55:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15878 to 12802. [2022-11-03 03:55:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12802 states, 12801 states have (on average 1.3555972189672683) internal successors, (17353), 12801 states have internal predecessors, (17353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12802 states to 12802 states and 17353 transitions. [2022-11-03 03:55:53,540 INFO L78 Accepts]: Start accepts. Automaton has 12802 states and 17353 transitions. Word has length 72 [2022-11-03 03:55:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:53,540 INFO L495 AbstractCegarLoop]: Abstraction has 12802 states and 17353 transitions. [2022-11-03 03:55:53,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12802 states and 17353 transitions. [2022-11-03 03:55:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 03:55:53,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:53,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:53,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 03:55:53,546 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:55:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 827897127, now seen corresponding path program 1 times [2022-11-03 03:55:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:53,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158601326] [2022-11-03 03:55:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:53,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:53,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158601326] [2022-11-03 03:55:53,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158601326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:53,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:53,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278513107] [2022-11-03 03:55:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:53,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:53,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:53,687 INFO L87 Difference]: Start difference. First operand 12802 states and 17353 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:04,602 INFO L93 Difference]: Finished difference Result 26419 states and 36321 transitions. [2022-11-03 03:56:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-03 03:56:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:04,623 INFO L225 Difference]: With dead ends: 26419 [2022-11-03 03:56:04,623 INFO L226 Difference]: Without dead ends: 18563 [2022-11-03 03:56:04,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:04,632 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 121 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:04,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 745 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:56:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18563 states. [2022-11-03 03:56:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18563 to 17158. [2022-11-03 03:56:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17158 states, 17157 states have (on average 1.3527423209185756) internal successors, (23209), 17157 states have internal predecessors, (23209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17158 states to 17158 states and 23209 transitions. [2022-11-03 03:56:14,723 INFO L78 Accepts]: Start accepts. Automaton has 17158 states and 23209 transitions. Word has length 73 [2022-11-03 03:56:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:14,723 INFO L495 AbstractCegarLoop]: Abstraction has 17158 states and 23209 transitions. [2022-11-03 03:56:14,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 17158 states and 23209 transitions. [2022-11-03 03:56:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 03:56:14,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:14,730 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] [2022-11-03 03:56:14,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 03:56:14,730 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:56:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1801630679, now seen corresponding path program 1 times [2022-11-03 03:56:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:14,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937917956] [2022-11-03 03:56:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:14,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:14,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937917956] [2022-11-03 03:56:14,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937917956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:14,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:14,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019704441] [2022-11-03 03:56:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:14,803 INFO L87 Difference]: Start difference. First operand 17158 states and 23209 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2022-11-03 03:56:27,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:27,404 INFO L93 Difference]: Finished difference Result 24476 states and 33205 transitions. [2022-11-03 03:56:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:27,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 [2022-11-03 03:56:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:27,428 INFO L225 Difference]: With dead ends: 24476 [2022-11-03 03:56:27,428 INFO L226 Difference]: Without dead ends: 16714 [2022-11-03 03:56:27,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:27,434 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 209 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:27,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 812 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:56:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16714 states. [2022-11-03 03:56:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16714 to 16712. [2022-11-03 03:56:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16712 states, 16711 states have (on average 1.3428879181377535) internal successors, (22441), 16711 states have internal predecessors, (22441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16712 states to 16712 states and 22441 transitions. [2022-11-03 03:56:43,231 INFO L78 Accepts]: Start accepts. Automaton has 16712 states and 22441 transitions. Word has length 76 [2022-11-03 03:56:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:43,231 INFO L495 AbstractCegarLoop]: Abstraction has 16712 states and 22441 transitions. [2022-11-03 03:56:43,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2022-11-03 03:56:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 16712 states and 22441 transitions. [2022-11-03 03:56:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 03:56:43,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:43,235 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] [2022-11-03 03:56:43,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 03:56:43,236 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:56:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1219489745, now seen corresponding path program 1 times [2022-11-03 03:56:43,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:43,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865693534] [2022-11-03 03:56:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:43,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:43,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:43,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865693534] [2022-11-03 03:56:43,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865693534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:43,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:43,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:43,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123986749] [2022-11-03 03:56:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:43,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:43,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:43,359 INFO L87 Difference]: Start difference. First operand 16712 states and 22441 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2022-11-03 03:57:04,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:04,713 INFO L93 Difference]: Finished difference Result 35956 states and 48815 transitions. [2022-11-03 03:57:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:57:04,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 [2022-11-03 03:57:04,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:04,745 INFO L225 Difference]: With dead ends: 35956 [2022-11-03 03:57:04,745 INFO L226 Difference]: Without dead ends: 25162 [2022-11-03 03:57:04,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:04,753 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 109 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:04,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 734 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:57:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25162 states. [2022-11-03 03:57:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25162 to 23052. [2022-11-03 03:57:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23052 states, 23051 states have (on average 1.3340419070756149) internal successors, (30751), 23051 states have internal predecessors, (30751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23052 states to 23052 states and 30751 transitions. [2022-11-03 03:57:22,653 INFO L78 Accepts]: Start accepts. Automaton has 23052 states and 30751 transitions. Word has length 76 [2022-11-03 03:57:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:22,653 INFO L495 AbstractCegarLoop]: Abstraction has 23052 states and 30751 transitions. [2022-11-03 03:57:22,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2022-11-03 03:57:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23052 states and 30751 transitions. [2022-11-03 03:57:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 03:57:22,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:22,660 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] [2022-11-03 03:57:22,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 03:57:22,660 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:57:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1749875966, now seen corresponding path program 1 times [2022-11-03 03:57:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:22,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979954269] [2022-11-03 03:57:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:22,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:22,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979954269] [2022-11-03 03:57:22,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979954269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:22,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:22,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:57:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116452891] [2022-11-03 03:57:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:57:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:57:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:22,736 INFO L87 Difference]: Start difference. First operand 23052 states and 30751 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-11-03 03:57:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:39,826 INFO L93 Difference]: Finished difference Result 31295 states and 41830 transitions. [2022-11-03 03:57:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:57:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2022-11-03 03:57:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:39,856 INFO L225 Difference]: With dead ends: 31295 [2022-11-03 03:57:39,856 INFO L226 Difference]: Without dead ends: 21806 [2022-11-03 03:57:39,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:39,864 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 200 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:39,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 807 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:57:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21806 states. [2022-11-03 03:58:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21806 to 21804. [2022-11-03 03:58:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21804 states, 21803 states have (on average 1.3227996147319177) internal successors, (28841), 21803 states have internal predecessors, (28841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:58:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21804 states to 21804 states and 28841 transitions. [2022-11-03 03:58:00,511 INFO L78 Accepts]: Start accepts. Automaton has 21804 states and 28841 transitions. Word has length 79 [2022-11-03 03:58:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:00,511 INFO L495 AbstractCegarLoop]: Abstraction has 21804 states and 28841 transitions. [2022-11-03 03:58:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-11-03 03:58:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 21804 states and 28841 transitions. [2022-11-03 03:58:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 03:58:00,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:00,516 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] [2022-11-03 03:58:00,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 03:58:00,516 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:58:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1113266849, now seen corresponding path program 1 times [2022-11-03 03:58:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:00,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064101372] [2022-11-03 03:58:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:58:00,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:00,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064101372] [2022-11-03 03:58:00,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064101372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:00,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:00,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290302678] [2022-11-03 03:58:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:00,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:00,633 INFO L87 Difference]: Start difference. First operand 21804 states and 28841 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-11-03 03:58:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:30,198 INFO L93 Difference]: Finished difference Result 47148 states and 62990 transitions. [2022-11-03 03:58:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:58:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2022-11-03 03:58:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:30,244 INFO L225 Difference]: With dead ends: 47148 [2022-11-03 03:58:30,245 INFO L226 Difference]: Without dead ends: 32638 [2022-11-03 03:58:30,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:30,256 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 96 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:30,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 716 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:58:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32638 states. [2022-11-03 03:58:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32638 to 30032. [2022-11-03 03:58:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30032 states, 30031 states have (on average 1.312643601611668) internal successors, (39420), 30031 states have internal predecessors, (39420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:58:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30032 states to 30032 states and 39420 transitions. [2022-11-03 03:58:57,094 INFO L78 Accepts]: Start accepts. Automaton has 30032 states and 39420 transitions. Word has length 79 [2022-11-03 03:58:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:57,094 INFO L495 AbstractCegarLoop]: Abstraction has 30032 states and 39420 transitions. [2022-11-03 03:58:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-11-03 03:58:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 30032 states and 39420 transitions. [2022-11-03 03:58:57,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 03:58:57,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:57,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:57,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 03:58:57,098 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:58:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:57,099 INFO L85 PathProgramCache]: Analyzing trace with hash 301760278, now seen corresponding path program 1 times [2022-11-03 03:58:57,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:57,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770054914] [2022-11-03 03:58:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:58:57,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:57,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770054914] [2022-11-03 03:58:57,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770054914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:57,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:57,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477732674] [2022-11-03 03:58:57,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:57,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:57,179 INFO L87 Difference]: Start difference. First operand 30032 states and 39420 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:21,754 INFO L93 Difference]: Finished difference Result 36784 states and 48333 transitions. [2022-11-03 03:59:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:59:21,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 03:59:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:21,790 INFO L225 Difference]: With dead ends: 36784 [2022-11-03 03:59:21,790 INFO L226 Difference]: Without dead ends: 27234 [2022-11-03 03:59:21,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:59:21,798 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 157 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:21,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 750 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:59:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27234 states. [2022-11-03 03:59:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27234 to 27232. [2022-11-03 03:59:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27232 states, 27231 states have (on average 1.3032573170283868) internal successors, (35489), 27231 states have internal predecessors, (35489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27232 states to 27232 states and 35489 transitions. [2022-11-03 03:59:45,345 INFO L78 Accepts]: Start accepts. Automaton has 27232 states and 35489 transitions. Word has length 82 [2022-11-03 03:59:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:45,345 INFO L495 AbstractCegarLoop]: Abstraction has 27232 states and 35489 transitions. [2022-11-03 03:59:45,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 27232 states and 35489 transitions. [2022-11-03 03:59:45,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 03:59:45,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:45,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:45,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 03:59:45,350 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 03:59:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash -444050809, now seen corresponding path program 1 times [2022-11-03 03:59:45,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:45,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476876273] [2022-11-03 03:59:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:45,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:59:45,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476876273] [2022-11-03 03:59:45,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476876273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:45,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:45,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:59:45,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784860017] [2022-11-03 03:59:45,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:45,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:59:45,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:45,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:59:45,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:59:45,467 INFO L87 Difference]: Start difference. First operand 27232 states and 35489 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:23,875 INFO L93 Difference]: Finished difference Result 58171 states and 76606 transitions. [2022-11-03 04:00:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:00:23,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 04:00:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:23,955 INFO L225 Difference]: With dead ends: 58171 [2022-11-03 04:00:23,955 INFO L226 Difference]: Without dead ends: 40781 [2022-11-03 04:00:23,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:00:23,972 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 74 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:23,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 696 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40781 states. [2022-11-03 04:00:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40781 to 37699. [2022-11-03 04:00:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37699 states, 37698 states have (on average 1.2980794737121333) internal successors, (48935), 37698 states have internal predecessors, (48935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37699 states to 37699 states and 48935 transitions. [2022-11-03 04:00:59,416 INFO L78 Accepts]: Start accepts. Automaton has 37699 states and 48935 transitions. Word has length 83 [2022-11-03 04:00:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:59,416 INFO L495 AbstractCegarLoop]: Abstraction has 37699 states and 48935 transitions. [2022-11-03 04:00:59,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 37699 states and 48935 transitions. [2022-11-03 04:00:59,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 04:00:59,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:59,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 04:00:59,423 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 04:00:59,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash 205144159, now seen corresponding path program 1 times [2022-11-03 04:00:59,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:59,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699779589] [2022-11-03 04:00:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:59,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:00:59,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:59,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699779589] [2022-11-03 04:00:59,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699779589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:59,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:59,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 04:00:59,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485873315] [2022-11-03 04:00:59,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:59,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 04:00:59,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:59,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 04:00:59,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:59,840 INFO L87 Difference]: Start difference. First operand 37699 states and 48935 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:00,932 INFO L93 Difference]: Finished difference Result 81967 states and 107088 transitions. [2022-11-03 04:02:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 04:02:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-11-03 04:02:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:01,051 INFO L225 Difference]: With dead ends: 81967 [2022-11-03 04:02:01,051 INFO L226 Difference]: Without dead ends: 81965 [2022-11-03 04:02:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:02:01,066 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 2398 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:01,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2398 Valid, 2810 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:02:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81965 states. [2022-11-03 04:02:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81965 to 42825. [2022-11-03 04:02:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42825 states, 42824 states have (on average 1.294881374929946) internal successors, (55452), 42824 states have internal predecessors, (55452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42825 states to 42825 states and 55452 transitions. [2022-11-03 04:02:31,246 INFO L78 Accepts]: Start accepts. Automaton has 42825 states and 55452 transitions. Word has length 87 [2022-11-03 04:02:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:31,247 INFO L495 AbstractCegarLoop]: Abstraction has 42825 states and 55452 transitions. [2022-11-03 04:02:31,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:02:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 42825 states and 55452 transitions. [2022-11-03 04:02:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 04:02:31,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:31,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:31,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 04:02:31,258 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-03 04:02:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:31,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1497783212, now seen corresponding path program 1 times [2022-11-03 04:02:31,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:31,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254659014] [2022-11-03 04:02:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:02:31,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:31,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254659014] [2022-11-03 04:02:31,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254659014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:31,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:31,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:02:31,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129413075] [2022-11-03 04:02:31,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:31,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:02:31,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:31,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:02:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:02:31,405 INFO L87 Difference]: Start difference. First operand 42825 states and 55452 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)