./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/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 59940e8fe87e3366018bea7f282f7e760705d94648fe4a1dff4928a6bf4a13ec --- 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 02:29:03,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:29:03,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:29:03,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:29:03,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:29:03,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:29:03,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:29:03,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:29:03,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:29:03,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:29:03,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:29:03,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:29:03,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:29:03,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:29:03,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:29:03,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:29:03,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:29:03,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:29:03,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:29:03,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:29:03,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:29:03,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:29:03,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:29:03,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:29:03,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:29:03,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:29:03,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:29:03,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:29:03,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:29:03,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:29:03,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:29:03,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:29:03,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:29:03,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:29:03,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:29:03,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:29:03,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:29:03,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:29:03,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:29:03,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:29:03,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:29:03,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:29:03,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:29:03,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:29:03,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:29:03,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:29:03,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:29:03,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:29:03,846 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:29:03,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:29:03,847 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:29:03,847 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:29:03,848 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:29:03,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:29:03,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:29:03,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:29:03,850 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:29:03,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:29:03,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:29:03,851 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:29:03,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:29:03,852 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:29:03,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:29:03,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:29:03,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:29:03,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:29:03,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:29:03,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:29:03,854 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:29:03,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:29:03,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:29:03,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:29:03,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:29:03,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:29:03,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:03,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:29:03,858 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:29:03,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:29:03,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:29:03,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:29:03,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:29:03,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:29:03,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:29:03,860 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59940e8fe87e3366018bea7f282f7e760705d94648fe4a1dff4928a6bf4a13ec [2022-11-03 02:29:04,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:29:04,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:29:04,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:29:04,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:29:04,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:29:04,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-03 02:29:04,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/data/78f1eb0b7/80f49752a2ea4ed2b727fffa74e3711a/FLAG7ca450d82 [2022-11-03 02:29:05,119 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:29:05,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-03 02:29:05,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/data/78f1eb0b7/80f49752a2ea4ed2b727fffa74e3711a/FLAG7ca450d82 [2022-11-03 02:29:05,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/data/78f1eb0b7/80f49752a2ea4ed2b727fffa74e3711a [2022-11-03 02:29:05,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:29:05,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:29:05,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:05,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:29:05,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:29:05,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:05" (1/1) ... [2022-11-03 02:29:05,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122fbef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:05, skipping insertion in model container [2022-11-03 02:29:05,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:05" (1/1) ... [2022-11-03 02:29:05,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:29:05,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:29:05,958 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-11-03 02:29:05,972 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-11-03 02:29:05,991 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-11-03 02:29:06,008 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-11-03 02:29:06,107 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-11-03 02:29:06,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:06,194 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:29:06,455 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-11-03 02:29:06,471 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-11-03 02:29:06,502 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-11-03 02:29:06,533 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-11-03 02:29:06,634 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_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-11-03 02:29:06,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:06,721 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:29:06,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06 WrapperNode [2022-11-03 02:29:06,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:06,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:06,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:29:06,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:29:06,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,878 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1689 [2022-11-03 02:29:06,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:06,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:29:06,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:29:06,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:29:06,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:29:06,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:29:06,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:29:06,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:29:06,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (1/1) ... [2022-11-03 02:29:06,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:07,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:29:07,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b7de0a-9668-46d3-9c2c-c8ab3cdba47f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:29:07,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:29:07,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:29:07,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:29:07,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:29:07,316 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:29:07,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:29:09,079 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:29:09,635 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:29:09,635 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:29:09,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:09 BoogieIcfgContainer [2022-11-03 02:29:09,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:29:09,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:29:09,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:29:09,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:29:09,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:29:05" (1/3) ... [2022-11-03 02:29:09,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45731ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:09, skipping insertion in model container [2022-11-03 02:29:09,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:06" (2/3) ... [2022-11-03 02:29:09,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45731ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:09, skipping insertion in model container [2022-11-03 02:29:09,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:09" (3/3) ... [2022-11-03 02:29:09,649 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-03 02:29:09,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:29:09,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-03 02:29:09,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:29:09,742 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;@59330337, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:29:09,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-03 02:29:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 303 states have (on average 1.8052805280528053) internal successors, (547), 308 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 02:29:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:29:09,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:09,767 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, 1, 1, 1, 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 02:29:09,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:09,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1131287639, now seen corresponding path program 1 times [2022-11-03 02:29:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:09,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918482185] [2022-11-03 02:29:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:11,984 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 02:29:11,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:11,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918482185] [2022-11-03 02:29:11,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918482185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:11,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:11,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:29:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113582721] [2022-11-03 02:29:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:11,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:12,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:12,048 INFO L87 Difference]: Start difference. First operand has 309 states, 303 states have (on average 1.8052805280528053) internal successors, (547), 308 states have internal predecessors, (547), 0 states have call successors, (0), 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 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 02:29:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:12,415 INFO L93 Difference]: Finished difference Result 796 states and 1400 transitions. [2022-11-03 02:29:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:12,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-11-03 02:29:12,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:12,453 INFO L225 Difference]: With dead ends: 796 [2022-11-03 02:29:12,453 INFO L226 Difference]: Without dead ends: 558 [2022-11-03 02:29:12,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:12,466 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1885 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:12,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 1026 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-03 02:29:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 537. [2022-11-03 02:29:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 532 states have (on average 1.3515037593984962) internal successors, (719), 536 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 02:29:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 719 transitions. [2022-11-03 02:29:12,642 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 719 transitions. Word has length 117 [2022-11-03 02:29:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:12,643 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 719 transitions. [2022-11-03 02:29:12,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 02:29:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 719 transitions. [2022-11-03 02:29:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 02:29:12,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:12,658 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, 1, 1, 1, 1, 1, 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 02:29:12,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:29:12,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash -826924297, now seen corresponding path program 1 times [2022-11-03 02:29:12,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:12,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017481889] [2022-11-03 02:29:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:12,863 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 02:29:12,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:12,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017481889] [2022-11-03 02:29:12,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017481889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:12,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:12,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009768858] [2022-11-03 02:29:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:12,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:12,869 INFO L87 Difference]: Start difference. First operand 537 states and 719 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 02:29:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:13,113 INFO L93 Difference]: Finished difference Result 1138 states and 1545 transitions. [2022-11-03 02:29:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:13,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-11-03 02:29:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:13,118 INFO L225 Difference]: With dead ends: 1138 [2022-11-03 02:29:13,118 INFO L226 Difference]: Without dead ends: 702 [2022-11-03 02:29:13,120 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 02:29:13,121 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 208 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:13,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 759 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:13,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-03 02:29:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 649. [2022-11-03 02:29:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 644 states have (on average 1.3944099378881987) internal successors, (898), 648 states have internal predecessors, (898), 0 states have call successors, (0), 0 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 02:29:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 898 transitions. [2022-11-03 02:29:13,216 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 898 transitions. Word has length 119 [2022-11-03 02:29:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:13,217 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 898 transitions. [2022-11-03 02:29:13,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 02:29:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 898 transitions. [2022-11-03 02:29:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 02:29:13,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:13,220 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, 1, 1, 1, 1, 1, 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 02:29:13,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:29:13,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1420544869, now seen corresponding path program 1 times [2022-11-03 02:29:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:13,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414531420] [2022-11-03 02:29:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:13,346 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 02:29:13,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:13,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414531420] [2022-11-03 02:29:13,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414531420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:13,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:13,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:13,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171638442] [2022-11-03 02:29:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:13,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:13,351 INFO L87 Difference]: Start difference. First operand 649 states and 898 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 02:29:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:13,621 INFO L93 Difference]: Finished difference Result 1541 states and 2194 transitions. [2022-11-03 02:29:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-11-03 02:29:13,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:13,627 INFO L225 Difference]: With dead ends: 1541 [2022-11-03 02:29:13,627 INFO L226 Difference]: Without dead ends: 939 [2022-11-03 02:29:13,628 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 02:29:13,630 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 247 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:13,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 794 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-03 02:29:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 851. [2022-11-03 02:29:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 846 states have (on average 1.4444444444444444) internal successors, (1222), 850 states have internal predecessors, (1222), 0 states have call successors, (0), 0 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 02:29:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1222 transitions. [2022-11-03 02:29:13,754 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1222 transitions. Word has length 119 [2022-11-03 02:29:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:13,755 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1222 transitions. [2022-11-03 02:29:13,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 02:29:13,756 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1222 transitions. [2022-11-03 02:29:13,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 02:29:13,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:13,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:13,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:29:13,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash -190234362, now seen corresponding path program 1 times [2022-11-03 02:29:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:13,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234587756] [2022-11-03 02:29:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:14,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:14,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234587756] [2022-11-03 02:29:14,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234587756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:14,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:14,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:29:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309520865] [2022-11-03 02:29:14,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:14,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:14,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:14,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:14,015 INFO L87 Difference]: Start difference. First operand 851 states and 1222 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 02:29:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:14,444 INFO L93 Difference]: Finished difference Result 1605 states and 2316 transitions. [2022-11-03 02:29:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:14,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 02:29:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:14,448 INFO L225 Difference]: With dead ends: 1605 [2022-11-03 02:29:14,448 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 02:29:14,450 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 02:29:14,451 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1092 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:14,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 316 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 02:29:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 851. [2022-11-03 02:29:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 846 states have (on average 1.4302600472813238) internal successors, (1210), 850 states have internal predecessors, (1210), 0 states have call successors, (0), 0 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 02:29:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1210 transitions. [2022-11-03 02:29:14,592 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1210 transitions. Word has length 122 [2022-11-03 02:29:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:14,593 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1210 transitions. [2022-11-03 02:29:14,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 02:29:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1210 transitions. [2022-11-03 02:29:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 02:29:14,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:14,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:14,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:29:14,596 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:14,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1075869867, now seen corresponding path program 1 times [2022-11-03 02:29:14,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:14,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303492403] [2022-11-03 02:29:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:14,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:15,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:15,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303492403] [2022-11-03 02:29:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303492403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:15,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:15,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:15,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265601814] [2022-11-03 02:29:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:15,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:15,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:15,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:15,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:15,497 INFO L87 Difference]: Start difference. First operand 851 states and 1210 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 02:29:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:16,405 INFO L93 Difference]: Finished difference Result 3059 states and 4549 transitions. [2022-11-03 02:29:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:16,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 02:29:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:16,422 INFO L225 Difference]: With dead ends: 3059 [2022-11-03 02:29:16,422 INFO L226 Difference]: Without dead ends: 2398 [2022-11-03 02:29:16,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:16,426 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 714 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:16,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1421 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:29:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-11-03 02:29:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2298. [2022-11-03 02:29:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2293 states have (on average 1.4949847361535107) internal successors, (3428), 2297 states have internal predecessors, (3428), 0 states have call successors, (0), 0 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 02:29:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3428 transitions. [2022-11-03 02:29:16,879 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3428 transitions. Word has length 122 [2022-11-03 02:29:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 3428 transitions. [2022-11-03 02:29:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 02:29:16,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3428 transitions. [2022-11-03 02:29:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 02:29:16,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:16,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:16,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:29:16,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1075438891, now seen corresponding path program 1 times [2022-11-03 02:29:16,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:16,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276739189] [2022-11-03 02:29:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:16,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:17,946 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 02:29:17,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:17,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276739189] [2022-11-03 02:29:17,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276739189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:17,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:17,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:29:17,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79188441] [2022-11-03 02:29:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:17,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:17,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:17,949 INFO L87 Difference]: Start difference. First operand 2298 states and 3428 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 02:29:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:18,997 INFO L93 Difference]: Finished difference Result 6154 states and 9192 transitions. [2022-11-03 02:29:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:18,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 02:29:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:19,013 INFO L225 Difference]: With dead ends: 6154 [2022-11-03 02:29:19,014 INFO L226 Difference]: Without dead ends: 3995 [2022-11-03 02:29:19,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:19,023 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 736 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:19,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 955 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-11-03 02:29:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3962. [2022-11-03 02:29:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3957 states have (on average 1.4849633560778368) internal successors, (5876), 3961 states have internal predecessors, (5876), 0 states have call successors, (0), 0 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 02:29:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 5876 transitions. [2022-11-03 02:29:20,091 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 5876 transitions. Word has length 122 [2022-11-03 02:29:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:20,091 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 5876 transitions. [2022-11-03 02:29:20,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 02:29:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 5876 transitions. [2022-11-03 02:29:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 02:29:20,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:20,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:29:20,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 541338667, now seen corresponding path program 1 times [2022-11-03 02:29:20,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:20,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620290416] [2022-11-03 02:29:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:20,219 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 02:29:20,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:20,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620290416] [2022-11-03 02:29:20,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620290416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:20,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:20,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371313338] [2022-11-03 02:29:20,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:20,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:20,226 INFO L87 Difference]: Start difference. First operand 3962 states and 5876 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 02:29:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:21,605 INFO L93 Difference]: Finished difference Result 10444 states and 15748 transitions. [2022-11-03 02:29:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-11-03 02:29:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:21,645 INFO L225 Difference]: With dead ends: 10444 [2022-11-03 02:29:21,645 INFO L226 Difference]: Without dead ends: 6593 [2022-11-03 02:29:21,650 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 02:29:21,651 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 217 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:21,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 758 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2022-11-03 02:29:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 6360. [2022-11-03 02:29:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6355 states have (on average 1.5172305271439812) internal successors, (9642), 6359 states have internal predecessors, (9642), 0 states have call successors, (0), 0 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 02:29:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9642 transitions. [2022-11-03 02:29:22,735 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9642 transitions. Word has length 124 [2022-11-03 02:29:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:22,736 INFO L495 AbstractCegarLoop]: Abstraction has 6360 states and 9642 transitions. [2022-11-03 02:29:22,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 02:29:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9642 transitions. [2022-11-03 02:29:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 02:29:22,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:22,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:22,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:29:22,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash -317202333, now seen corresponding path program 1 times [2022-11-03 02:29:22,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:22,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571617805] [2022-11-03 02:29:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:22,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:23,574 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 02:29:23,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571617805] [2022-11-03 02:29:23,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571617805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:23,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:23,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:29:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30473934] [2022-11-03 02:29:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:23,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:23,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:23,584 INFO L87 Difference]: Start difference. First operand 6360 states and 9642 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 02:29:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:25,596 INFO L93 Difference]: Finished difference Result 13856 states and 21226 transitions. [2022-11-03 02:29:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:25,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-11-03 02:29:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:25,635 INFO L225 Difference]: With dead ends: 13856 [2022-11-03 02:29:25,636 INFO L226 Difference]: Without dead ends: 7909 [2022-11-03 02:29:25,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:25,646 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1356 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:25,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 715 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2022-11-03 02:29:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 7888. [2022-11-03 02:29:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7883 states have (on average 1.5223899530635545) internal successors, (12001), 7887 states have internal predecessors, (12001), 0 states have call successors, (0), 0 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 02:29:27,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 12001 transitions. [2022-11-03 02:29:27,802 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 12001 transitions. Word has length 127 [2022-11-03 02:29:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:27,802 INFO L495 AbstractCegarLoop]: Abstraction has 7888 states and 12001 transitions. [2022-11-03 02:29:27,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 02:29:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 12001 transitions. [2022-11-03 02:29:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:29:27,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:27,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:27,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:29:27,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:27,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1155681947, now seen corresponding path program 1 times [2022-11-03 02:29:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658169664] [2022-11-03 02:29:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:28,844 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 02:29:28,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658169664] [2022-11-03 02:29:28,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658169664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:28,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:28,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:29:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327673390] [2022-11-03 02:29:28,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:28,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:28,857 INFO L87 Difference]: Start difference. First operand 7888 states and 12001 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:29:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:31,429 INFO L93 Difference]: Finished difference Result 14998 states and 22771 transitions. [2022-11-03 02:29:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:29:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:31,482 INFO L225 Difference]: With dead ends: 14998 [2022-11-03 02:29:31,482 INFO L226 Difference]: Without dead ends: 10442 [2022-11-03 02:29:31,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:31,492 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1716 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:31,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 703 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2022-11-03 02:29:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 7793. [2022-11-03 02:29:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7788 states have (on average 1.479070364663585) internal successors, (11519), 7792 states have internal predecessors, (11519), 0 states have call successors, (0), 0 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 02:29:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 11519 transitions. [2022-11-03 02:29:33,217 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 11519 transitions. Word has length 132 [2022-11-03 02:29:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:33,217 INFO L495 AbstractCegarLoop]: Abstraction has 7793 states and 11519 transitions. [2022-11-03 02:29:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:29:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 11519 transitions. [2022-11-03 02:29:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:29:33,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:33,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:33,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:29:33,223 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1430509385, now seen corresponding path program 1 times [2022-11-03 02:29:33,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:33,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45725529] [2022-11-03 02:29:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:34,868 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 02:29:34,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:34,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45725529] [2022-11-03 02:29:34,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45725529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:34,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:34,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:29:34,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217876167] [2022-11-03 02:29:34,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:34,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:29:34,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:34,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:29:34,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:29:34,871 INFO L87 Difference]: Start difference. First operand 7793 states and 11519 transitions. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:29:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:40,038 INFO L93 Difference]: Finished difference Result 20129 states and 30439 transitions. [2022-11-03 02:29:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:29:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:29:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:40,092 INFO L225 Difference]: With dead ends: 20129 [2022-11-03 02:29:40,092 INFO L226 Difference]: Without dead ends: 17042 [2022-11-03 02:29:40,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:29:40,102 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2809 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2809 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:40,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2809 Valid, 1874 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:29:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17042 states. [2022-11-03 02:29:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17042 to 14285. [2022-11-03 02:29:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14285 states, 14280 states have (on average 1.5037114845938375) internal successors, (21473), 14284 states have internal predecessors, (21473), 0 states have call successors, (0), 0 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 02:29:43,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14285 states to 14285 states and 21473 transitions. [2022-11-03 02:29:43,115 INFO L78 Accepts]: Start accepts. Automaton has 14285 states and 21473 transitions. Word has length 132 [2022-11-03 02:29:43,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:43,115 INFO L495 AbstractCegarLoop]: Abstraction has 14285 states and 21473 transitions. [2022-11-03 02:29:43,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:29:43,116 INFO L276 IsEmpty]: Start isEmpty. Operand 14285 states and 21473 transitions. [2022-11-03 02:29:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:29:43,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:43,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:43,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:29:43,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:29:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1430078409, now seen corresponding path program 1 times [2022-11-03 02:29:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:43,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134014033] [2022-11-03 02:29:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:58,318 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 02:29:58,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134014033] [2022-11-03 02:29:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134014033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:58,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:58,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-03 02:29:58,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522161610] [2022-11-03 02:29:58,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:58,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 02:29:58,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 02:29:58,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:29:58,322 INFO L87 Difference]: Start difference. First operand 14285 states and 21473 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:30:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:31,796 INFO L93 Difference]: Finished difference Result 43046 states and 64459 transitions. [2022-11-03 02:30:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 02:30:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:30:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:31,914 INFO L225 Difference]: With dead ends: 43046 [2022-11-03 02:30:31,914 INFO L226 Difference]: Without dead ends: 37227 [2022-11-03 02:30:31,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=1033, Invalid=4223, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 02:30:31,931 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4320 mSDsluCounter, 9957 mSDsCounter, 0 mSdLazyCounter, 5319 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 10388 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 5319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:31,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4320 Valid, 10388 Invalid, 5552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [233 Valid, 5319 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:30:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37227 states. [2022-11-03 02:30:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37227 to 19908. [2022-11-03 02:30:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19908 states, 19903 states have (on average 1.4935436868813747) internal successors, (29726), 19907 states have internal predecessors, (29726), 0 states have call successors, (0), 0 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 02:30:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19908 states to 19908 states and 29726 transitions. [2022-11-03 02:30:36,850 INFO L78 Accepts]: Start accepts. Automaton has 19908 states and 29726 transitions. Word has length 132 [2022-11-03 02:30:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:36,851 INFO L495 AbstractCegarLoop]: Abstraction has 19908 states and 29726 transitions. [2022-11-03 02:30:36,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:30:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 19908 states and 29726 transitions. [2022-11-03 02:30:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:30:36,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:36,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:30:36,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:30:36,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:30:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1752265178, now seen corresponding path program 1 times [2022-11-03 02:30:36,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:36,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459070413] [2022-11-03 02:30:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:46,734 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 02:30:46,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:46,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459070413] [2022-11-03 02:30:46,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459070413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:46,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:46,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-03 02:30:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899521471] [2022-11-03 02:30:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 02:30:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 02:30:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:30:46,737 INFO L87 Difference]: Start difference. First operand 19908 states and 29726 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:31:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:35,092 INFO L93 Difference]: Finished difference Result 76141 states and 114165 transitions. [2022-11-03 02:31:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-03 02:31:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:31:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:35,242 INFO L225 Difference]: With dead ends: 76141 [2022-11-03 02:31:35,242 INFO L226 Difference]: Without dead ends: 56313 [2022-11-03 02:31:35,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=955, Invalid=6185, Unknown=0, NotChecked=0, Total=7140 [2022-11-03 02:31:35,274 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 3826 mSDsluCounter, 13472 mSDsCounter, 0 mSdLazyCounter, 8475 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 13963 SdHoareTripleChecker+Invalid, 8679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 8475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:35,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 13963 Invalid, 8679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [204 Valid, 8475 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-11-03 02:31:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56313 states. [2022-11-03 02:31:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56313 to 27011. [2022-11-03 02:31:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27011 states, 27006 states have (on average 1.496556320817596) internal successors, (40416), 27010 states have internal predecessors, (40416), 0 states have call successors, (0), 0 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 02:31:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27011 states to 27011 states and 40416 transitions. [2022-11-03 02:31:43,398 INFO L78 Accepts]: Start accepts. Automaton has 27011 states and 40416 transitions. Word has length 132 [2022-11-03 02:31:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:43,399 INFO L495 AbstractCegarLoop]: Abstraction has 27011 states and 40416 transitions. [2022-11-03 02:31:43,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:31:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 27011 states and 40416 transitions. [2022-11-03 02:31:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:31:43,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:43,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:43,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:31:43,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:31:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:43,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1057162613, now seen corresponding path program 1 times [2022-11-03 02:31:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:43,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386266165] [2022-11-03 02:31:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:43,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:52,487 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 02:31:52,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:52,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386266165] [2022-11-03 02:31:52,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386266165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:52,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:52,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-03 02:31:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548707596] [2022-11-03 02:31:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:52,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 02:31:52,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 02:31:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:31:52,491 INFO L87 Difference]: Start difference. First operand 27011 states and 40416 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:32:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:22,178 INFO L93 Difference]: Finished difference Result 58981 states and 88535 transitions. [2022-11-03 02:32:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-03 02:32:22,179 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:32:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:22,285 INFO L225 Difference]: With dead ends: 58981 [2022-11-03 02:32:22,286 INFO L226 Difference]: Without dead ends: 46833 [2022-11-03 02:32:22,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=484, Invalid=2486, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 02:32:22,310 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2823 mSDsluCounter, 8678 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2823 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:22,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2823 Valid, 9019 Invalid, 4863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:32:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46833 states. [2022-11-03 02:32:29,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46833 to 25146. [2022-11-03 02:32:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25146 states, 25141 states have (on average 1.497076488604272) internal successors, (37638), 25145 states have internal predecessors, (37638), 0 states have call successors, (0), 0 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 02:32:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25146 states to 25146 states and 37638 transitions. [2022-11-03 02:32:29,696 INFO L78 Accepts]: Start accepts. Automaton has 25146 states and 37638 transitions. Word has length 132 [2022-11-03 02:32:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:29,696 INFO L495 AbstractCegarLoop]: Abstraction has 25146 states and 37638 transitions. [2022-11-03 02:32:29,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:32:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 25146 states and 37638 transitions. [2022-11-03 02:32:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:32:29,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:29,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:29,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:32:29,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:32:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash 324522177, now seen corresponding path program 1 times [2022-11-03 02:32:29,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:29,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769407336] [2022-11-03 02:32:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:29,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:29,889 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 02:32:29,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:29,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769407336] [2022-11-03 02:32:29,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769407336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:29,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:29,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:32:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958936032] [2022-11-03 02:32:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:32:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:32:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:32:29,893 INFO L87 Difference]: Start difference. First operand 25146 states and 37638 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:32:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:35,952 INFO L93 Difference]: Finished difference Result 44499 states and 66816 transitions. [2022-11-03 02:32:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:32:35,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:32:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:35,992 INFO L225 Difference]: With dead ends: 44499 [2022-11-03 02:32:35,993 INFO L226 Difference]: Without dead ends: 19630 [2022-11-03 02:32:36,014 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 02:32:36,015 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1072 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:36,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 308 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:32:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19630 states. [2022-11-03 02:32:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19630 to 19630. [2022-11-03 02:32:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19630 states, 19625 states have (on average 1.488203821656051) internal successors, (29206), 19629 states have internal predecessors, (29206), 0 states have call successors, (0), 0 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 02:32:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19630 states to 19630 states and 29206 transitions. [2022-11-03 02:32:41,741 INFO L78 Accepts]: Start accepts. Automaton has 19630 states and 29206 transitions. Word has length 132 [2022-11-03 02:32:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 19630 states and 29206 transitions. [2022-11-03 02:32:41,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:32:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 19630 states and 29206 transitions. [2022-11-03 02:32:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:32:41,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:41,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:41,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:32:41,748 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:32:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1022662381, now seen corresponding path program 1 times [2022-11-03 02:32:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:41,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371523855] [2022-11-03 02:32:41,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:42,484 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 02:32:42,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:42,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371523855] [2022-11-03 02:32:42,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371523855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:42,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:42,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:32:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122330834] [2022-11-03 02:32:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:32:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:32:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:32:42,488 INFO L87 Difference]: Start difference. First operand 19630 states and 29206 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:32:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:48,488 INFO L93 Difference]: Finished difference Result 26126 states and 38887 transitions. [2022-11-03 02:32:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:32:48,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:32:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:48,520 INFO L225 Difference]: With dead ends: 26126 [2022-11-03 02:32:48,520 INFO L226 Difference]: Without dead ends: 19683 [2022-11-03 02:32:48,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:32:48,529 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1455 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:48,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 768 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:32:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19683 states. [2022-11-03 02:32:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19683 to 19622. [2022-11-03 02:32:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19622 states, 19617 states have (on average 1.4797369628383545) internal successors, (29028), 19621 states have internal predecessors, (29028), 0 states have call successors, (0), 0 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 02:32:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19622 states to 19622 states and 29028 transitions. [2022-11-03 02:32:54,199 INFO L78 Accepts]: Start accepts. Automaton has 19622 states and 29028 transitions. Word has length 132 [2022-11-03 02:32:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:54,199 INFO L495 AbstractCegarLoop]: Abstraction has 19622 states and 29028 transitions. [2022-11-03 02:32:54,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:32:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 19622 states and 29028 transitions. [2022-11-03 02:32:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:32:54,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:54,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:54,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:32:54,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:32:54,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash 315164629, now seen corresponding path program 1 times [2022-11-03 02:32:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196931941] [2022-11-03 02:32:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:54,968 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 02:32:54,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196931941] [2022-11-03 02:32:54,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196931941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:54,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:54,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:32:54,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282653894] [2022-11-03 02:32:54,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:54,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:32:54,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:32:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:32:54,973 INFO L87 Difference]: Start difference. First operand 19622 states and 29028 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:33:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:00,865 INFO L93 Difference]: Finished difference Result 33562 states and 49879 transitions. [2022-11-03 02:33:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:33:00,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:33:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:00,898 INFO L225 Difference]: With dead ends: 33562 [2022-11-03 02:33:00,898 INFO L226 Difference]: Without dead ends: 20030 [2022-11-03 02:33:00,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:33:00,910 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 945 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:00,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 904 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20030 states. [2022-11-03 02:33:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20030 to 17600. [2022-11-03 02:33:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17600 states, 17595 states have (on average 1.4777493606138108) internal successors, (26001), 17599 states have internal predecessors, (26001), 0 states have call successors, (0), 0 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 02:33:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17600 states to 17600 states and 26001 transitions. [2022-11-03 02:33:06,566 INFO L78 Accepts]: Start accepts. Automaton has 17600 states and 26001 transitions. Word has length 132 [2022-11-03 02:33:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:06,567 INFO L495 AbstractCegarLoop]: Abstraction has 17600 states and 26001 transitions. [2022-11-03 02:33:06,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:33:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 17600 states and 26001 transitions. [2022-11-03 02:33:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:33:06,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:06,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:06,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:33:06,572 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:33:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash 379368943, now seen corresponding path program 1 times [2022-11-03 02:33:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:06,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524324359] [2022-11-03 02:33:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:15,878 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 02:33:15,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:15,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524324359] [2022-11-03 02:33:15,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524324359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:15,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:15,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-03 02:33:15,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088116718] [2022-11-03 02:33:15,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:15,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-03 02:33:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:15,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-03 02:33:15,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:33:15,883 INFO L87 Difference]: Start difference. First operand 17600 states and 26001 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:33:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:49,199 INFO L93 Difference]: Finished difference Result 47765 states and 71467 transitions. [2022-11-03 02:33:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 02:33:49,200 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-03 02:33:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:49,285 INFO L225 Difference]: With dead ends: 47765 [2022-11-03 02:33:49,285 INFO L226 Difference]: Without dead ends: 44674 [2022-11-03 02:33:49,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=622, Invalid=3800, Unknown=0, NotChecked=0, Total=4422 [2022-11-03 02:33:49,297 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 3424 mSDsluCounter, 8505 mSDsCounter, 0 mSdLazyCounter, 4522 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 8803 SdHoareTripleChecker+Invalid, 4685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:49,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 8803 Invalid, 4685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 4522 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:33:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44674 states. [2022-11-03 02:33:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44674 to 27100. [2022-11-03 02:33:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27100 states, 27095 states have (on average 1.4813065141169957) internal successors, (40136), 27099 states have internal predecessors, (40136), 0 states have call successors, (0), 0 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 02:33:59,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27100 states to 27100 states and 40136 transitions. [2022-11-03 02:33:59,200 INFO L78 Accepts]: Start accepts. Automaton has 27100 states and 40136 transitions. Word has length 132 [2022-11-03 02:33:59,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:59,200 INFO L495 AbstractCegarLoop]: Abstraction has 27100 states and 40136 transitions. [2022-11-03 02:33:59,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 02:33:59,201 INFO L276 IsEmpty]: Start isEmpty. Operand 27100 states and 40136 transitions. [2022-11-03 02:33:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:33:59,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:59,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:59,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:33:59,206 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:33:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:59,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1491561676, now seen corresponding path program 1 times [2022-11-03 02:33:59,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:59,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922735218] [2022-11-03 02:33:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:59,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:09,071 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 02:34:09,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:09,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922735218] [2022-11-03 02:34:09,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922735218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:09,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:09,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-03 02:34:09,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636683119] [2022-11-03 02:34:09,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:09,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 02:34:09,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:09,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 02:34:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:34:09,075 INFO L87 Difference]: Start difference. First operand 27100 states and 40136 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)