./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:53:57,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:53:57,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:53:57,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:53:57,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:53:57,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:53:57,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:53:57,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:53:57,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:53:57,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:53:57,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:53:57,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:53:57,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:53:57,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:53:57,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:53:57,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:53:57,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:53:57,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:53:57,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:53:57,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:53:57,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:53:57,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:53:57,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:53:57,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:53:57,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:53:57,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:53:57,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:53:57,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:53:57,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:53:57,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:53:57,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:53:57,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:53:57,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:53:57,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:53:57,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:53:57,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:53:57,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:53:57,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:53:57,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:53:57,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:53:57,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:53:57,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:53:57,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:53:57,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:53:57,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:53:57,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:53:57,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:53:57,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:53:57,907 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:53:57,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:53:57,907 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:53:57,907 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:53:57,907 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:53:57,907 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:53:57,907 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:53:57,908 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:53:57,908 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:53:57,908 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:53:57,908 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:53:57,908 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:53:57,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:53:57,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:53:57,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:53:57,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:53:57,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:53:57,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:53:57,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:53:57,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:53:57,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:53:57,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:53:57,910 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:53:57,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:53:57,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:53:57,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:53:57,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:53:57,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:53:57,912 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:53:57,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:53:57,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:53:57,912 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:53:57,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:53:57,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:53:57,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:53:57,913 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_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 [2022-12-14 08:53:58,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:53:58,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:53:58,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:53:58,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:53:58,095 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:53:58,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-12-14 08:54:00,616 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:54:00,865 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:54:00,865 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-12-14 08:54:00,876 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/data/b2b56b54e/5059809ec58c489da05ff6e2d83e8778/FLAG915b9288b [2022-12-14 08:54:01,189 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/data/b2b56b54e/5059809ec58c489da05ff6e2d83e8778 [2022-12-14 08:54:01,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:54:01,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:54:01,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:54:01,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:54:01,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:54:01,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d62975d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01, skipping insertion in model container [2022-12-14 08:54:01,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:54:01,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:54:01,437 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2022-12-14 08:54:01,466 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2022-12-14 08:54:01,475 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2022-12-14 08:54:01,480 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2022-12-14 08:54:01,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:54:01,594 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:54:01,628 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2022-12-14 08:54:01,651 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2022-12-14 08:54:01,656 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2022-12-14 08:54:01,659 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2022-12-14 08:54:01,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:54:01,727 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:54:01,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01 WrapperNode [2022-12-14 08:54:01,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:54:01,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:54:01,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:54:01,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:54:01,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,810 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2418 [2022-12-14 08:54:01,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:54:01,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:54:01,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:54:01,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:54:01,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,857 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:54:01,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:54:01,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:54:01,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:54:01,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (1/1) ... [2022-12-14 08:54:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:54:01,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:54:01,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:54:01,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:54:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:54:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:54:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:54:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:54:02,085 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:54:02,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:54:03,046 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:54:03,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:54:03,142 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 08:54:03,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:54:03 BoogieIcfgContainer [2022-12-14 08:54:03,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:54:03,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:54:03,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:54:03,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:54:03,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:54:01" (1/3) ... [2022-12-14 08:54:03,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2283c9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:54:03, skipping insertion in model container [2022-12-14 08:54:03,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:54:01" (2/3) ... [2022-12-14 08:54:03,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2283c9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:54:03, skipping insertion in model container [2022-12-14 08:54:03,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:54:03" (3/3) ... [2022-12-14 08:54:03,151 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-12-14 08:54:03,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:54:03,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 08:54:03,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:54:03,210 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;@35b312ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:54:03,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 08:54:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 421 states have (on average 1.8598574821852731) internal successors, (783), 425 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 08:54:03,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:03,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:03,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:03,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash 34120099, now seen corresponding path program 1 times [2022-12-14 08:54:03,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:03,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171314473] [2022-12-14 08:54:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:03,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:03,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:03,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171314473] [2022-12-14 08:54:03,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171314473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:03,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:03,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:54:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002881655] [2022-12-14 08:54:03,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:03,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:54:03,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:54:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:54:03,575 INFO L87 Difference]: Start difference. First operand has 426 states, 421 states have (on average 1.8598574821852731) internal successors, (783), 425 states have internal predecessors, (783), 0 states have call successors, (0), 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 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:04,002 INFO L93 Difference]: Finished difference Result 712 states and 1257 transitions. [2022-12-14 08:54:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:54:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-12-14 08:54:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:04,017 INFO L225 Difference]: With dead ends: 712 [2022-12-14 08:54:04,017 INFO L226 Difference]: Without dead ends: 449 [2022-12-14 08:54:04,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:04,024 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 2125 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:04,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 551 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:54:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-12-14 08:54:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2022-12-14 08:54:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 439 states have (on average 1.3143507972665147) internal successors, (577), 442 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 577 transitions. [2022-12-14 08:54:04,088 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 577 transitions. Word has length 49 [2022-12-14 08:54:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:04,089 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 577 transitions. [2022-12-14 08:54:04,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 577 transitions. [2022-12-14 08:54:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 08:54:04,092 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:04,092 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] [2022-12-14 08:54:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:54:04,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash 758566708, now seen corresponding path program 1 times [2022-12-14 08:54:04,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:04,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256893688] [2022-12-14 08:54:04,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:04,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:04,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:04,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256893688] [2022-12-14 08:54:04,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256893688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:04,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:04,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016864281] [2022-12-14 08:54:04,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:04,199 INFO L87 Difference]: Start difference. First operand 443 states and 577 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:04,275 INFO L93 Difference]: Finished difference Result 724 states and 978 transitions. [2022-12-14 08:54:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:04,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-12-14 08:54:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:04,278 INFO L225 Difference]: With dead ends: 724 [2022-12-14 08:54:04,278 INFO L226 Difference]: Without dead ends: 566 [2022-12-14 08:54:04,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:04,279 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 279 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:04,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-12-14 08:54:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 560. [2022-12-14 08:54:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 556 states have (on average 1.3435251798561152) internal successors, (747), 559 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 747 transitions. [2022-12-14 08:54:04,308 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 747 transitions. Word has length 49 [2022-12-14 08:54:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:04,308 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 747 transitions. [2022-12-14 08:54:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 747 transitions. [2022-12-14 08:54:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 08:54:04,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:04,310 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] [2022-12-14 08:54:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:54:04,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1943064238, now seen corresponding path program 1 times [2022-12-14 08:54:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:04,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831994194] [2022-12-14 08:54:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:04,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:04,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831994194] [2022-12-14 08:54:04,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831994194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:04,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:04,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146298447] [2022-12-14 08:54:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:04,367 INFO L87 Difference]: Start difference. First operand 560 states and 747 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:04,486 INFO L93 Difference]: Finished difference Result 1072 states and 1473 transitions. [2022-12-14 08:54:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-12-14 08:54:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:04,488 INFO L225 Difference]: With dead ends: 1072 [2022-12-14 08:54:04,488 INFO L226 Difference]: Without dead ends: 810 [2022-12-14 08:54:04,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:04,490 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 236 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:04,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 786 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:54:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-12-14 08:54:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 803. [2022-12-14 08:54:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 799 states have (on average 1.360450563204005) internal successors, (1087), 802 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1087 transitions. [2022-12-14 08:54:04,531 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1087 transitions. Word has length 49 [2022-12-14 08:54:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:04,532 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1087 transitions. [2022-12-14 08:54:04,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1087 transitions. [2022-12-14 08:54:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 08:54:04,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:04,533 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] [2022-12-14 08:54:04,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:54:04,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:04,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:04,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1798780356, now seen corresponding path program 1 times [2022-12-14 08:54:04,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:04,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829657207] [2022-12-14 08:54:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:04,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:04,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:04,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829657207] [2022-12-14 08:54:04,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829657207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:04,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:04,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:54:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325582558] [2022-12-14 08:54:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:04,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:54:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:54:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:54:04,610 INFO L87 Difference]: Start difference. First operand 803 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:04,956 INFO L93 Difference]: Finished difference Result 1892 states and 2622 transitions. [2022-12-14 08:54:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:54:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-12-14 08:54:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:04,960 INFO L225 Difference]: With dead ends: 1892 [2022-12-14 08:54:04,960 INFO L226 Difference]: Without dead ends: 1184 [2022-12-14 08:54:04,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:04,962 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 1271 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:04,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 318 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:54:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-12-14 08:54:05,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1178. [2022-12-14 08:54:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1174 states have (on average 1.374787052810903) internal successors, (1614), 1177 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1614 transitions. [2022-12-14 08:54:05,036 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1614 transitions. Word has length 49 [2022-12-14 08:54:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:05,036 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1614 transitions. [2022-12-14 08:54:05,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1614 transitions. [2022-12-14 08:54:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 08:54:05,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:05,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:05,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:54:05,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:05,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash -108782984, now seen corresponding path program 1 times [2022-12-14 08:54:05,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:05,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040502038] [2022-12-14 08:54:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:05,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:05,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040502038] [2022-12-14 08:54:05,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040502038] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:05,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:05,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468876065] [2022-12-14 08:54:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:05,079 INFO L87 Difference]: Start difference. First operand 1178 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:05,238 INFO L93 Difference]: Finished difference Result 2893 states and 3999 transitions. [2022-12-14 08:54:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:05,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-14 08:54:05,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:05,244 INFO L225 Difference]: With dead ends: 2893 [2022-12-14 08:54:05,244 INFO L226 Difference]: Without dead ends: 1899 [2022-12-14 08:54:05,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:05,246 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 276 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:05,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 720 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:05,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-12-14 08:54:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1893. [2022-12-14 08:54:05,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1889 states have (on average 1.3610375860243515) internal successors, (2571), 1892 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2571 transitions. [2022-12-14 08:54:05,366 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2571 transitions. Word has length 50 [2022-12-14 08:54:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:05,366 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 2571 transitions. [2022-12-14 08:54:05,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2571 transitions. [2022-12-14 08:54:05,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 08:54:05,368 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:05,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:05,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:54:05,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:05,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1856759737, now seen corresponding path program 1 times [2022-12-14 08:54:05,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:05,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152908956] [2022-12-14 08:54:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:05,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:05,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:05,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152908956] [2022-12-14 08:54:05,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152908956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:05,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:05,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:54:05,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274082051] [2022-12-14 08:54:05,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:05,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:54:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:05,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:54:05,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:54:05,435 INFO L87 Difference]: Start difference. First operand 1893 states and 2571 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:05,864 INFO L93 Difference]: Finished difference Result 4654 states and 6390 transitions. [2022-12-14 08:54:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:54:05,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 08:54:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:05,870 INFO L225 Difference]: With dead ends: 4654 [2022-12-14 08:54:05,870 INFO L226 Difference]: Without dead ends: 2931 [2022-12-14 08:54:05,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:05,872 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1167 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:05,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 270 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:54:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2022-12-14 08:54:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2924. [2022-12-14 08:54:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2920 states have (on average 1.3623287671232878) internal successors, (3978), 2923 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3978 transitions. [2022-12-14 08:54:06,038 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3978 transitions. Word has length 51 [2022-12-14 08:54:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:06,038 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 3978 transitions. [2022-12-14 08:54:06,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3978 transitions. [2022-12-14 08:54:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:54:06,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:06,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:54:06,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1124331061, now seen corresponding path program 1 times [2022-12-14 08:54:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:06,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166563377] [2022-12-14 08:54:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:06,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:06,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:06,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166563377] [2022-12-14 08:54:06,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166563377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:06,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:06,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:54:06,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304365108] [2022-12-14 08:54:06,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:06,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:54:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:54:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:06,131 INFO L87 Difference]: Start difference. First operand 2924 states and 3978 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:07,377 INFO L93 Difference]: Finished difference Result 9735 states and 13404 transitions. [2022-12-14 08:54:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:54:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 08:54:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:07,396 INFO L225 Difference]: With dead ends: 9735 [2022-12-14 08:54:07,396 INFO L226 Difference]: Without dead ends: 8640 [2022-12-14 08:54:07,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:54:07,399 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 2290 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:07,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 505 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:54:07,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8640 states. [2022-12-14 08:54:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8640 to 2938. [2022-12-14 08:54:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2934 states have (on average 1.361963190184049) internal successors, (3996), 2937 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 3996 transitions. [2022-12-14 08:54:07,697 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 3996 transitions. Word has length 52 [2022-12-14 08:54:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:07,698 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 3996 transitions. [2022-12-14 08:54:07,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 3996 transitions. [2022-12-14 08:54:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:54:07,699 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:07,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:07,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:54:07,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:07,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1221262858, now seen corresponding path program 1 times [2022-12-14 08:54:07,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026673349] [2022-12-14 08:54:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:07,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:07,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026673349] [2022-12-14 08:54:07,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026673349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:07,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:07,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:54:07,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565837466] [2022-12-14 08:54:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:07,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:54:07,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:54:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:07,788 INFO L87 Difference]: Start difference. First operand 2938 states and 3996 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:09,595 INFO L93 Difference]: Finished difference Result 10791 states and 14940 transitions. [2022-12-14 08:54:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:54:09,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 08:54:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:09,612 INFO L225 Difference]: With dead ends: 10791 [2022-12-14 08:54:09,612 INFO L226 Difference]: Without dead ends: 9851 [2022-12-14 08:54:09,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:54:09,615 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1772 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:09,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 598 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:54:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9851 states. [2022-12-14 08:54:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9851 to 2960. [2022-12-14 08:54:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2956 states have (on average 1.3623139377537212) internal successors, (4027), 2959 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 4027 transitions. [2022-12-14 08:54:10,023 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 4027 transitions. Word has length 52 [2022-12-14 08:54:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:10,023 INFO L495 AbstractCegarLoop]: Abstraction has 2960 states and 4027 transitions. [2022-12-14 08:54:10,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 4027 transitions. [2022-12-14 08:54:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:54:10,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:10,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:10,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 08:54:10,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash -163415276, now seen corresponding path program 1 times [2022-12-14 08:54:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:10,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317326698] [2022-12-14 08:54:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:10,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:10,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317326698] [2022-12-14 08:54:10,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317326698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:10,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:10,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:54:10,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281233829] [2022-12-14 08:54:10,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:10,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:54:10,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:54:10,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:10,141 INFO L87 Difference]: Start difference. First operand 2960 states and 4027 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:12,626 INFO L93 Difference]: Finished difference Result 12802 states and 17753 transitions. [2022-12-14 08:54:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:54:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 08:54:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:12,642 INFO L225 Difference]: With dead ends: 12802 [2022-12-14 08:54:12,642 INFO L226 Difference]: Without dead ends: 11748 [2022-12-14 08:54:12,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:54:12,645 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 2602 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:12,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2602 Valid, 538 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:54:12,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11748 states. [2022-12-14 08:54:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11748 to 2994. [2022-12-14 08:54:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2990 states have (on average 1.3615384615384616) internal successors, (4071), 2993 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 4071 transitions. [2022-12-14 08:54:13,159 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 4071 transitions. Word has length 52 [2022-12-14 08:54:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:13,159 INFO L495 AbstractCegarLoop]: Abstraction has 2994 states and 4071 transitions. [2022-12-14 08:54:13,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 4071 transitions. [2022-12-14 08:54:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 08:54:13,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:13,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 08:54:13,161 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -55106621, now seen corresponding path program 1 times [2022-12-14 08:54:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:13,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81879168] [2022-12-14 08:54:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:13,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:13,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81879168] [2022-12-14 08:54:13,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81879168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:13,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:13,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:54:13,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265466853] [2022-12-14 08:54:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:13,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:54:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:54:13,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:13,323 INFO L87 Difference]: Start difference. First operand 2994 states and 4071 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:14,730 INFO L93 Difference]: Finished difference Result 7494 states and 10329 transitions. [2022-12-14 08:54:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:54:14,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 08:54:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:14,737 INFO L225 Difference]: With dead ends: 7494 [2022-12-14 08:54:14,737 INFO L226 Difference]: Without dead ends: 5462 [2022-12-14 08:54:14,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:54:14,740 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1307 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:14,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 733 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:54:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2022-12-14 08:54:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 2916. [2022-12-14 08:54:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3602335164835164) internal successors, (3961), 2915 states have internal predecessors, (3961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3961 transitions. [2022-12-14 08:54:15,256 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3961 transitions. Word has length 53 [2022-12-14 08:54:15,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:15,256 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 3961 transitions. [2022-12-14 08:54:15,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3961 transitions. [2022-12-14 08:54:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 08:54:15,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:15,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:15,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 08:54:15,259 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1129390909, now seen corresponding path program 1 times [2022-12-14 08:54:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:15,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442000812] [2022-12-14 08:54:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:15,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:15,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442000812] [2022-12-14 08:54:15,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442000812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:15,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:15,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 08:54:15,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071999949] [2022-12-14 08:54:15,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:15,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:54:15,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:15,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:54:15,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:54:15,449 INFO L87 Difference]: Start difference. First operand 2916 states and 3961 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:17,260 INFO L93 Difference]: Finished difference Result 7995 states and 10964 transitions. [2022-12-14 08:54:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:54:17,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 08:54:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:17,269 INFO L225 Difference]: With dead ends: 7995 [2022-12-14 08:54:17,269 INFO L226 Difference]: Without dead ends: 6093 [2022-12-14 08:54:17,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-12-14 08:54:17,272 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 894 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:17,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1277 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 08:54:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6093 states. [2022-12-14 08:54:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6093 to 2887. [2022-12-14 08:54:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.3596947624002775) internal successors, (3920), 2886 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3920 transitions. [2022-12-14 08:54:17,823 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3920 transitions. Word has length 53 [2022-12-14 08:54:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:17,823 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3920 transitions. [2022-12-14 08:54:17,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3920 transitions. [2022-12-14 08:54:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 08:54:17,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:17,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:17,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 08:54:17,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash -421230622, now seen corresponding path program 1 times [2022-12-14 08:54:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:17,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554755134] [2022-12-14 08:54:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:17,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:17,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:17,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554755134] [2022-12-14 08:54:17,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554755134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:17,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:17,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 08:54:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138537534] [2022-12-14 08:54:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:17,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:54:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:54:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:54:17,983 INFO L87 Difference]: Start difference. First operand 2887 states and 3920 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:19,968 INFO L93 Difference]: Finished difference Result 6005 states and 8183 transitions. [2022-12-14 08:54:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 08:54:19,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-14 08:54:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:19,976 INFO L225 Difference]: With dead ends: 6005 [2022-12-14 08:54:19,976 INFO L226 Difference]: Without dead ends: 6000 [2022-12-14 08:54:19,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 08:54:19,978 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1369 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:19,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 1057 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 08:54:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2022-12-14 08:54:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 2887. [2022-12-14 08:54:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.3590010405827264) internal successors, (3918), 2886 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3918 transitions. [2022-12-14 08:54:20,559 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3918 transitions. Word has length 53 [2022-12-14 08:54:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:20,559 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3918 transitions. [2022-12-14 08:54:20,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3918 transitions. [2022-12-14 08:54:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 08:54:20,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:20,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:20,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 08:54:20,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:20,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1237294753, now seen corresponding path program 1 times [2022-12-14 08:54:20,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:20,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513410146] [2022-12-14 08:54:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:20,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:20,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:20,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513410146] [2022-12-14 08:54:20,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513410146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:20,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:20,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288868327] [2022-12-14 08:54:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:20,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:20,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:20,601 INFO L87 Difference]: Start difference. First operand 2887 states and 3918 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:21,198 INFO L93 Difference]: Finished difference Result 3946 states and 5380 transitions. [2022-12-14 08:54:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:21,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 08:54:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:21,201 INFO L225 Difference]: With dead ends: 3946 [2022-12-14 08:54:21,201 INFO L226 Difference]: Without dead ends: 2894 [2022-12-14 08:54:21,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:21,203 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 180 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:21,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 671 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-12-14 08:54:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2887. [2022-12-14 08:54:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.3423517169614985) internal successors, (3870), 2886 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3870 transitions. [2022-12-14 08:54:21,760 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3870 transitions. Word has length 54 [2022-12-14 08:54:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:21,760 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3870 transitions. [2022-12-14 08:54:21,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3870 transitions. [2022-12-14 08:54:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 08:54:21,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:21,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 08:54:21,762 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash -863697757, now seen corresponding path program 1 times [2022-12-14 08:54:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:21,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316509840] [2022-12-14 08:54:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:21,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:21,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:21,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316509840] [2022-12-14 08:54:21,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316509840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:21,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:21,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:21,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539724671] [2022-12-14 08:54:21,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:21,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:21,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:21,798 INFO L87 Difference]: Start difference. First operand 2887 states and 3870 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:22,404 INFO L93 Difference]: Finished difference Result 4007 states and 5396 transitions. [2022-12-14 08:54:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:22,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 08:54:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:22,407 INFO L225 Difference]: With dead ends: 4007 [2022-12-14 08:54:22,407 INFO L226 Difference]: Without dead ends: 2893 [2022-12-14 08:54:22,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:22,409 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 196 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:22,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 672 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-12-14 08:54:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2887. [2022-12-14 08:54:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.327089836975373) internal successors, (3826), 2886 states have internal predecessors, (3826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3826 transitions. [2022-12-14 08:54:22,971 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3826 transitions. Word has length 54 [2022-12-14 08:54:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:22,971 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3826 transitions. [2022-12-14 08:54:22,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3826 transitions. [2022-12-14 08:54:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 08:54:22,972 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:22,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:22,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 08:54:22,972 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:22,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1589153365, now seen corresponding path program 1 times [2022-12-14 08:54:22,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:22,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192501682] [2022-12-14 08:54:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:22,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:23,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:23,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192501682] [2022-12-14 08:54:23,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192501682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:23,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:23,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584226380] [2022-12-14 08:54:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:23,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:23,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:23,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:23,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:23,004 INFO L87 Difference]: Start difference. First operand 2887 states and 3826 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:23,628 INFO L93 Difference]: Finished difference Result 4036 states and 5379 transitions. [2022-12-14 08:54:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-12-14 08:54:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:23,631 INFO L225 Difference]: With dead ends: 4036 [2022-12-14 08:54:23,631 INFO L226 Difference]: Without dead ends: 2878 [2022-12-14 08:54:23,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:23,634 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 216 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:23,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 692 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2022-12-14 08:54:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2872. [2022-12-14 08:54:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2868 states have (on average 1.306834030683403) internal successors, (3748), 2871 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 3748 transitions. [2022-12-14 08:54:24,218 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 3748 transitions. Word has length 54 [2022-12-14 08:54:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:24,218 INFO L495 AbstractCegarLoop]: Abstraction has 2872 states and 3748 transitions. [2022-12-14 08:54:24,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 3748 transitions. [2022-12-14 08:54:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 08:54:24,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:24,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:24,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 08:54:24,219 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1127796312, now seen corresponding path program 1 times [2022-12-14 08:54:24,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:24,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669382432] [2022-12-14 08:54:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:24,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:24,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:24,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669382432] [2022-12-14 08:54:24,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669382432] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:24,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:24,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363239288] [2022-12-14 08:54:24,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:24,245 INFO L87 Difference]: Start difference. First operand 2872 states and 3748 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:25,117 INFO L93 Difference]: Finished difference Result 4519 states and 5947 transitions. [2022-12-14 08:54:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:25,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 08:54:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:25,120 INFO L225 Difference]: With dead ends: 4519 [2022-12-14 08:54:25,120 INFO L226 Difference]: Without dead ends: 3218 [2022-12-14 08:54:25,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:25,121 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 282 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:25,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 476 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2022-12-14 08:54:25,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2662. [2022-12-14 08:54:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2658 states have (on average 1.3054928517682467) internal successors, (3470), 2661 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3470 transitions. [2022-12-14 08:54:25,680 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3470 transitions. Word has length 55 [2022-12-14 08:54:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:25,680 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3470 transitions. [2022-12-14 08:54:25,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3470 transitions. [2022-12-14 08:54:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:54:25,681 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:25,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:25,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 08:54:25,682 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash 847139516, now seen corresponding path program 1 times [2022-12-14 08:54:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:25,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634740796] [2022-12-14 08:54:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:25,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:25,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:25,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634740796] [2022-12-14 08:54:25,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634740796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:25,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:25,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:25,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588719085] [2022-12-14 08:54:25,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:25,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:25,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:25,718 INFO L87 Difference]: Start difference. First operand 2662 states and 3470 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:26,608 INFO L93 Difference]: Finished difference Result 4438 states and 5797 transitions. [2022-12-14 08:54:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:26,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-14 08:54:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:26,612 INFO L225 Difference]: With dead ends: 4438 [2022-12-14 08:54:26,612 INFO L226 Difference]: Without dead ends: 3077 [2022-12-14 08:54:26,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:26,613 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 255 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:26,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 376 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:54:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-12-14 08:54:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2510. [2022-12-14 08:54:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2506 states have (on average 1.3048683160415004) internal successors, (3270), 2509 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3270 transitions. [2022-12-14 08:54:27,220 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3270 transitions. Word has length 56 [2022-12-14 08:54:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:27,220 INFO L495 AbstractCegarLoop]: Abstraction has 2510 states and 3270 transitions. [2022-12-14 08:54:27,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3270 transitions. [2022-12-14 08:54:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:54:27,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:27,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:27,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 08:54:27,221 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:27,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 474120695, now seen corresponding path program 1 times [2022-12-14 08:54:27,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:27,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193493934] [2022-12-14 08:54:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:27,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193493934] [2022-12-14 08:54:27,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193493934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:27,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:27,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 08:54:27,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217470684] [2022-12-14 08:54:27,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:27,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 08:54:27,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 08:54:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:54:27,649 INFO L87 Difference]: Start difference. First operand 2510 states and 3270 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:29,589 INFO L93 Difference]: Finished difference Result 3952 states and 5163 transitions. [2022-12-14 08:54:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:54:29,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-14 08:54:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:29,593 INFO L225 Difference]: With dead ends: 3952 [2022-12-14 08:54:29,593 INFO L226 Difference]: Without dead ends: 3948 [2022-12-14 08:54:29,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 08:54:29,594 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1482 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:29,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 2601 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 08:54:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2022-12-14 08:54:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 2506. [2022-12-14 08:54:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2503 states have (on average 1.3044346783859369) internal successors, (3265), 2505 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3265 transitions. [2022-12-14 08:54:30,249 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3265 transitions. Word has length 56 [2022-12-14 08:54:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:30,249 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 3265 transitions. [2022-12-14 08:54:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3265 transitions. [2022-12-14 08:54:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:54:30,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:30,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:30,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 08:54:30,250 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:30,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1321631968, now seen corresponding path program 1 times [2022-12-14 08:54:30,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:30,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620670286] [2022-12-14 08:54:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:30,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:30,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:30,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620670286] [2022-12-14 08:54:30,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620670286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:30,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:30,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-14 08:54:30,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410705438] [2022-12-14 08:54:30,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 08:54:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 08:54:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:54:30,828 INFO L87 Difference]: Start difference. First operand 2506 states and 3265 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:33,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:33,745 INFO L93 Difference]: Finished difference Result 3444 states and 4473 transitions. [2022-12-14 08:54:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 08:54:33,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-14 08:54:33,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:33,748 INFO L225 Difference]: With dead ends: 3444 [2022-12-14 08:54:33,748 INFO L226 Difference]: Without dead ends: 3438 [2022-12-14 08:54:33,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 08:54:33,749 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2123 mSDsluCounter, 4117 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:33,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 4470 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 08:54:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-12-14 08:54:34,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2506. [2022-12-14 08:54:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2503 states have (on average 1.3040351578106273) internal successors, (3264), 2505 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3264 transitions. [2022-12-14 08:54:34,442 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3264 transitions. Word has length 56 [2022-12-14 08:54:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:34,442 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 3264 transitions. [2022-12-14 08:54:34,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3264 transitions. [2022-12-14 08:54:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:54:34,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:34,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:34,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 08:54:34,444 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1854706179, now seen corresponding path program 1 times [2022-12-14 08:54:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:34,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005521557] [2022-12-14 08:54:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:34,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:34,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005521557] [2022-12-14 08:54:34,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005521557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:34,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:34,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 08:54:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260135703] [2022-12-14 08:54:34,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:34,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 08:54:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 08:54:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:54:34,745 INFO L87 Difference]: Start difference. First operand 2506 states and 3264 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:36,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:36,561 INFO L93 Difference]: Finished difference Result 3586 states and 4685 transitions. [2022-12-14 08:54:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:54:36,561 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-14 08:54:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:36,564 INFO L225 Difference]: With dead ends: 3586 [2022-12-14 08:54:36,564 INFO L226 Difference]: Without dead ends: 3364 [2022-12-14 08:54:36,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 08:54:36,565 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1567 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:36,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 2031 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:54:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2022-12-14 08:54:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 2494. [2022-12-14 08:54:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2492 states have (on average 1.3045746388443018) internal successors, (3251), 2493 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3251 transitions. [2022-12-14 08:54:37,306 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3251 transitions. Word has length 56 [2022-12-14 08:54:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:37,307 INFO L495 AbstractCegarLoop]: Abstraction has 2494 states and 3251 transitions. [2022-12-14 08:54:37,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3251 transitions. [2022-12-14 08:54:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:54:37,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:37,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:37,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 08:54:37,308 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1858163223, now seen corresponding path program 1 times [2022-12-14 08:54:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:37,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241757510] [2022-12-14 08:54:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:37,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241757510] [2022-12-14 08:54:37,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241757510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:37,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:37,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 08:54:37,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788268921] [2022-12-14 08:54:37,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:37,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 08:54:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 08:54:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:54:37,582 INFO L87 Difference]: Start difference. First operand 2494 states and 3251 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:39,929 INFO L93 Difference]: Finished difference Result 4142 states and 5411 transitions. [2022-12-14 08:54:39,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 08:54:39,929 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-14 08:54:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:39,932 INFO L225 Difference]: With dead ends: 4142 [2022-12-14 08:54:39,932 INFO L226 Difference]: Without dead ends: 4138 [2022-12-14 08:54:39,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-12-14 08:54:39,934 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1618 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:39,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 3017 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 08:54:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-12-14 08:54:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 2494. [2022-12-14 08:54:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2492 states have (on average 1.3041733547351524) internal successors, (3250), 2493 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3250 transitions. [2022-12-14 08:54:40,703 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3250 transitions. Word has length 56 [2022-12-14 08:54:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:40,704 INFO L495 AbstractCegarLoop]: Abstraction has 2494 states and 3250 transitions. [2022-12-14 08:54:40,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3250 transitions. [2022-12-14 08:54:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:54:40,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:40,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 08:54:40,705 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash -612654208, now seen corresponding path program 1 times [2022-12-14 08:54:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:40,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233611303] [2022-12-14 08:54:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:40,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:40,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233611303] [2022-12-14 08:54:40,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233611303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:40,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:40,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:40,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314564859] [2022-12-14 08:54:40,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:40,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:40,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:40,730 INFO L87 Difference]: Start difference. First operand 2494 states and 3250 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:41,717 INFO L93 Difference]: Finished difference Result 3991 states and 5215 transitions. [2022-12-14 08:54:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:41,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-14 08:54:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:41,719 INFO L225 Difference]: With dead ends: 3991 [2022-12-14 08:54:41,719 INFO L226 Difference]: Without dead ends: 2704 [2022-12-14 08:54:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:41,721 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 207 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 389 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2022-12-14 08:54:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2382. [2022-12-14 08:54:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.3011339773204535) internal successors, (3098), 2381 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3098 transitions. [2022-12-14 08:54:42,468 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3098 transitions. Word has length 56 [2022-12-14 08:54:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:42,468 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3098 transitions. [2022-12-14 08:54:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3098 transitions. [2022-12-14 08:54:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:54:42,469 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:42,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:42,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 08:54:42,469 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1785037930, now seen corresponding path program 1 times [2022-12-14 08:54:42,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:42,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911942853] [2022-12-14 08:54:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:42,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:42,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911942853] [2022-12-14 08:54:42,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911942853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:42,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:42,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:54:42,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234514386] [2022-12-14 08:54:42,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:42,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:54:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:42,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:54:42,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:54:42,521 INFO L87 Difference]: Start difference. First operand 2382 states and 3098 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:43,304 INFO L93 Difference]: Finished difference Result 2388 states and 3101 transitions. [2022-12-14 08:54:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:54:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-12-14 08:54:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:43,307 INFO L225 Difference]: With dead ends: 2388 [2022-12-14 08:54:43,307 INFO L226 Difference]: Without dead ends: 2081 [2022-12-14 08:54:43,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:54:43,308 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 605 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:43,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 551 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:54:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2022-12-14 08:54:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2077. [2022-12-14 08:54:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2076 states have (on average 1.2991329479768785) internal successors, (2697), 2076 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2697 transitions. [2022-12-14 08:54:43,998 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2697 transitions. Word has length 56 [2022-12-14 08:54:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:43,998 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 2697 transitions. [2022-12-14 08:54:43,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:43,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2697 transitions. [2022-12-14 08:54:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 08:54:43,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:43,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:43,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 08:54:44,000 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash -106059015, now seen corresponding path program 1 times [2022-12-14 08:54:44,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:44,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871281307] [2022-12-14 08:54:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:44,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:44,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871281307] [2022-12-14 08:54:44,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871281307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:44,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:44,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:44,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622501774] [2022-12-14 08:54:44,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:44,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:44,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:44,049 INFO L87 Difference]: Start difference. First operand 2077 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:45,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:45,080 INFO L93 Difference]: Finished difference Result 3793 states and 5023 transitions. [2022-12-14 08:54:45,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:45,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-12-14 08:54:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:45,084 INFO L225 Difference]: With dead ends: 3793 [2022-12-14 08:54:45,084 INFO L226 Difference]: Without dead ends: 2807 [2022-12-14 08:54:45,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:45,085 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 132 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:45,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 433 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-12-14 08:54:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2613. [2022-12-14 08:54:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2612 states have (on average 1.2924961715160797) internal successors, (3376), 2612 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3376 transitions. [2022-12-14 08:54:46,005 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3376 transitions. Word has length 57 [2022-12-14 08:54:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:46,005 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 3376 transitions. [2022-12-14 08:54:46,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3376 transitions. [2022-12-14 08:54:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 08:54:46,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:46,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:46,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 08:54:46,006 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash 540593195, now seen corresponding path program 1 times [2022-12-14 08:54:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:46,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526352906] [2022-12-14 08:54:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:46,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:46,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:46,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526352906] [2022-12-14 08:54:46,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526352906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:46,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:46,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877564176] [2022-12-14 08:54:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:46,063 INFO L87 Difference]: Start difference. First operand 2613 states and 3376 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:47,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:47,511 INFO L93 Difference]: Finished difference Result 5123 states and 6749 transitions. [2022-12-14 08:54:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:47,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 08:54:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:47,514 INFO L225 Difference]: With dead ends: 5123 [2022-12-14 08:54:47,514 INFO L226 Difference]: Without dead ends: 3757 [2022-12-14 08:54:47,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:47,516 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 112 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:47,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 429 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:47,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-12-14 08:54:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3379. [2022-12-14 08:54:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 3378 states have (on average 1.2904085257548845) internal successors, (4359), 3378 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4359 transitions. [2022-12-14 08:54:48,756 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4359 transitions. Word has length 60 [2022-12-14 08:54:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:48,756 INFO L495 AbstractCegarLoop]: Abstraction has 3379 states and 4359 transitions. [2022-12-14 08:54:48,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4359 transitions. [2022-12-14 08:54:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 08:54:48,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:48,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:48,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 08:54:48,757 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:48,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1345830140, now seen corresponding path program 1 times [2022-12-14 08:54:48,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:48,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269649286] [2022-12-14 08:54:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:48,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:48,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269649286] [2022-12-14 08:54:48,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269649286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:48,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:48,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:54:48,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091635164] [2022-12-14 08:54:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:48,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:54:48,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:48,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:54:48,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:48,814 INFO L87 Difference]: Start difference. First operand 3379 states and 4359 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:50,855 INFO L93 Difference]: Finished difference Result 6913 states and 9071 transitions. [2022-12-14 08:54:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:54:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 08:54:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:50,859 INFO L225 Difference]: With dead ends: 6913 [2022-12-14 08:54:50,859 INFO L226 Difference]: Without dead ends: 5033 [2022-12-14 08:54:50,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:54:50,860 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 81 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:50,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 431 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:54:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5033 states. [2022-12-14 08:54:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5033 to 4511. [2022-12-14 08:54:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 4510 states have (on average 1.2838137472283815) internal successors, (5790), 4510 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 5790 transitions. [2022-12-14 08:54:52,600 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 5790 transitions. Word has length 64 [2022-12-14 08:54:52,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:52,600 INFO L495 AbstractCegarLoop]: Abstraction has 4511 states and 5790 transitions. [2022-12-14 08:54:52,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 5790 transitions. [2022-12-14 08:54:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 08:54:52,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:52,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 08:54:52,602 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1004351148, now seen corresponding path program 1 times [2022-12-14 08:54:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:52,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785982602] [2022-12-14 08:54:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:52,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:52,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785982602] [2022-12-14 08:54:52,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785982602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:52,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:52,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 08:54:52,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360726429] [2022-12-14 08:54:52,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:52,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 08:54:52,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 08:54:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:54:52,761 INFO L87 Difference]: Start difference. First operand 4511 states and 5790 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:54:57,313 INFO L93 Difference]: Finished difference Result 9936 states and 12804 transitions. [2022-12-14 08:54:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 08:54:57,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-14 08:54:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:54:57,321 INFO L225 Difference]: With dead ends: 9936 [2022-12-14 08:54:57,322 INFO L226 Difference]: Without dead ends: 9934 [2022-12-14 08:54:57,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-12-14 08:54:57,323 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1123 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:54:57,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1735 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:54:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9934 states. [2022-12-14 08:54:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9934 to 5507. [2022-12-14 08:54:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 5506 states have (on average 1.2778786778060298) internal successors, (7036), 5506 states have internal predecessors, (7036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 7036 transitions. [2022-12-14 08:54:59,795 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 7036 transitions. Word has length 68 [2022-12-14 08:54:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:54:59,796 INFO L495 AbstractCegarLoop]: Abstraction has 5507 states and 7036 transitions. [2022-12-14 08:54:59,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:54:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 7036 transitions. [2022-12-14 08:54:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 08:54:59,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:54:59,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:54:59,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 08:54:59,798 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:54:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:54:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1467687864, now seen corresponding path program 1 times [2022-12-14 08:54:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:54:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349836969] [2022-12-14 08:54:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:54:59,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:54:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:54:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:59,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:54:59,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349836969] [2022-12-14 08:54:59,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349836969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:59,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:54:59,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:54:59,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811960831] [2022-12-14 08:54:59,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:59,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:54:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:54:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:54:59,880 INFO L87 Difference]: Start difference. First operand 5507 states and 7036 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:05,330 INFO L93 Difference]: Finished difference Result 11953 states and 15359 transitions. [2022-12-14 08:55:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:55:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-14 08:55:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:05,339 INFO L225 Difference]: With dead ends: 11953 [2022-12-14 08:55:05,339 INFO L226 Difference]: Without dead ends: 10433 [2022-12-14 08:55:05,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:55:05,342 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1819 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:05,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 407 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:55:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10433 states. [2022-12-14 08:55:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10433 to 5387. [2022-12-14 08:55:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5387 states, 5386 states have (on average 1.2781284812476792) internal successors, (6884), 5386 states have internal predecessors, (6884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 6884 transitions. [2022-12-14 08:55:07,795 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 6884 transitions. Word has length 71 [2022-12-14 08:55:07,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:07,795 INFO L495 AbstractCegarLoop]: Abstraction has 5387 states and 6884 transitions. [2022-12-14 08:55:07,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 6884 transitions. [2022-12-14 08:55:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 08:55:07,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:07,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:07,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 08:55:07,797 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:55:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash 311172158, now seen corresponding path program 1 times [2022-12-14 08:55:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:07,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794209210] [2022-12-14 08:55:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:55:07,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:07,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794209210] [2022-12-14 08:55:07,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794209210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:07,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:55:07,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 08:55:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524546391] [2022-12-14 08:55:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:07,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 08:55:07,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 08:55:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:55:07,959 INFO L87 Difference]: Start difference. First operand 5387 states and 6884 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:12,465 INFO L93 Difference]: Finished difference Result 9390 states and 12130 transitions. [2022-12-14 08:55:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 08:55:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-14 08:55:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:12,473 INFO L225 Difference]: With dead ends: 9390 [2022-12-14 08:55:12,473 INFO L226 Difference]: Without dead ends: 9388 [2022-12-14 08:55:12,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:55:12,474 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 852 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:12,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1659 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9388 states. [2022-12-14 08:55:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9388 to 5859. [2022-12-14 08:55:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.2768863093205873) internal successors, (7480), 5858 states have internal predecessors, (7480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 7480 transitions. [2022-12-14 08:55:15,228 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 7480 transitions. Word has length 73 [2022-12-14 08:55:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:15,228 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 7480 transitions. [2022-12-14 08:55:15,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 7480 transitions. [2022-12-14 08:55:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 08:55:15,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:15,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:15,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 08:55:15,230 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:55:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1036801958, now seen corresponding path program 1 times [2022-12-14 08:55:15,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:15,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026273766] [2022-12-14 08:55:15,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:55:15,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026273766] [2022-12-14 08:55:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026273766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:15,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:55:15,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 08:55:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337405724] [2022-12-14 08:55:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:15,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 08:55:15,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 08:55:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:55:15,382 INFO L87 Difference]: Start difference. First operand 5859 states and 7480 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:19,645 INFO L93 Difference]: Finished difference Result 8407 states and 10786 transitions. [2022-12-14 08:55:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 08:55:19,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 08:55:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:19,653 INFO L225 Difference]: With dead ends: 8407 [2022-12-14 08:55:19,653 INFO L226 Difference]: Without dead ends: 8405 [2022-12-14 08:55:19,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-12-14 08:55:19,654 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 925 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:19,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1649 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:55:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8405 states. [2022-12-14 08:55:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8405 to 5837. [2022-12-14 08:55:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5837 states, 5836 states have (on average 1.2772446881425634) internal successors, (7454), 5836 states have internal predecessors, (7454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5837 states to 5837 states and 7454 transitions. [2022-12-14 08:55:22,419 INFO L78 Accepts]: Start accepts. Automaton has 5837 states and 7454 transitions. Word has length 74 [2022-12-14 08:55:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:22,419 INFO L495 AbstractCegarLoop]: Abstraction has 5837 states and 7454 transitions. [2022-12-14 08:55:22,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5837 states and 7454 transitions. [2022-12-14 08:55:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 08:55:22,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:22,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 08:55:22,421 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:55:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 444966956, now seen corresponding path program 1 times [2022-12-14 08:55:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:22,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286393523] [2022-12-14 08:55:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:55:22,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:22,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286393523] [2022-12-14 08:55:22,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286393523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:22,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:55:22,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 08:55:22,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716296052] [2022-12-14 08:55:22,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:22,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 08:55:22,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 08:55:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:55:22,586 INFO L87 Difference]: Start difference. First operand 5837 states and 7454 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:27,505 INFO L93 Difference]: Finished difference Result 9736 states and 12557 transitions. [2022-12-14 08:55:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 08:55:27,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 08:55:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:27,513 INFO L225 Difference]: With dead ends: 9736 [2022-12-14 08:55:27,513 INFO L226 Difference]: Without dead ends: 9734 [2022-12-14 08:55:27,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:55:27,515 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 813 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:27,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1657 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9734 states. [2022-12-14 08:55:30,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9734 to 6093. [2022-12-14 08:55:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6093 states, 6092 states have (on average 1.2765922521339461) internal successors, (7777), 6092 states have internal predecessors, (7777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 7777 transitions. [2022-12-14 08:55:30,451 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 7777 transitions. Word has length 74 [2022-12-14 08:55:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:30,451 INFO L495 AbstractCegarLoop]: Abstraction has 6093 states and 7777 transitions. [2022-12-14 08:55:30,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 7777 transitions. [2022-12-14 08:55:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 08:55:30,452 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:30,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:30,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 08:55:30,453 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:55:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash 425928445, now seen corresponding path program 1 times [2022-12-14 08:55:30,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:30,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970372564] [2022-12-14 08:55:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 08:55:30,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:30,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970372564] [2022-12-14 08:55:30,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970372564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:30,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:55:30,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 08:55:30,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342626327] [2022-12-14 08:55:30,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:30,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:55:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:55:30,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:55:30,578 INFO L87 Difference]: Start difference. First operand 6093 states and 7777 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:36,205 INFO L93 Difference]: Finished difference Result 12867 states and 16393 transitions. [2022-12-14 08:55:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:55:36,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-12-14 08:55:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:36,214 INFO L225 Difference]: With dead ends: 12867 [2022-12-14 08:55:36,214 INFO L226 Difference]: Without dead ends: 10041 [2022-12-14 08:55:36,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-12-14 08:55:36,217 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 690 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:36,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1048 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:55:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10041 states. [2022-12-14 08:55:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10041 to 5975. [2022-12-14 08:55:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5975 states, 5974 states have (on average 1.2785403414797456) internal successors, (7638), 5974 states have internal predecessors, (7638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 7638 transitions. [2022-12-14 08:55:39,214 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 7638 transitions. Word has length 76 [2022-12-14 08:55:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:39,214 INFO L495 AbstractCegarLoop]: Abstraction has 5975 states and 7638 transitions. [2022-12-14 08:55:39,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:39,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 7638 transitions. [2022-12-14 08:55:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 08:55:39,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:39,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 08:55:39,216 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:55:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 959582828, now seen corresponding path program 1 times [2022-12-14 08:55:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:39,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577693252] [2022-12-14 08:55:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 08:55:39,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:39,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577693252] [2022-12-14 08:55:39,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577693252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:39,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:55:39,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 08:55:39,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124427366] [2022-12-14 08:55:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:39,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:55:39,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:55:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:55:39,340 INFO L87 Difference]: Start difference. First operand 5975 states and 7638 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:45,839 INFO L93 Difference]: Finished difference Result 13226 states and 16882 transitions. [2022-12-14 08:55:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:55:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-12-14 08:55:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:45,849 INFO L225 Difference]: With dead ends: 13226 [2022-12-14 08:55:45,849 INFO L226 Difference]: Without dead ends: 10806 [2022-12-14 08:55:45,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-12-14 08:55:45,852 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 702 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:45,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1089 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:55:45,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10806 states. [2022-12-14 08:55:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10806 to 5889. [2022-12-14 08:55:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5889 states, 5888 states have (on average 1.2797214673913044) internal successors, (7535), 5888 states have internal predecessors, (7535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 7535 transitions. [2022-12-14 08:55:48,880 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 7535 transitions. Word has length 76 [2022-12-14 08:55:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:48,880 INFO L495 AbstractCegarLoop]: Abstraction has 5889 states and 7535 transitions. [2022-12-14 08:55:48,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 7535 transitions. [2022-12-14 08:55:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 08:55:48,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:48,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:48,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 08:55:48,882 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:55:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1357844593, now seen corresponding path program 1 times [2022-12-14 08:55:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:48,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479745299] [2022-12-14 08:55:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:55:49,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:49,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479745299] [2022-12-14 08:55:49,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479745299] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:49,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256657068] [2022-12-14 08:55:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:49,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:49,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:49,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:49,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:55:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:49,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 08:55:49,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:55:53,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:56:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:56:03,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256657068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:56:03,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [235460955] [2022-12-14 08:56:03,286 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 08:56:03,286 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:56:03,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:56:03,305 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:56:03,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:56:03,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:03,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:03,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 08:56:03,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:03,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:03,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:03,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 08:56:06,444 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:56:51,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [235460955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:56:51,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:56:51,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [16, 26, 26] total 105 [2022-12-14 08:56:51,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428248692] [2022-12-14 08:56:51,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:56:51,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 08:56:51,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:56:51,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 08:56:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1967, Invalid=8953, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 08:56:51,533 INFO L87 Difference]: Start difference. First operand 5889 states and 7535 transitions. Second operand has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:57:06,854 INFO L93 Difference]: Finished difference Result 6451 states and 8272 transitions. [2022-12-14 08:57:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 08:57:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-14 08:57:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:57:06,859 INFO L225 Difference]: With dead ends: 6451 [2022-12-14 08:57:06,859 INFO L226 Difference]: Without dead ends: 5645 [2022-12-14 08:57:06,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 131 SyntacticMatches, 13 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6144 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=1967, Invalid=8953, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 08:57:06,861 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 9 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 5348 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 5353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:57:06,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 600 Invalid, 5353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5348 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-12-14 08:57:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2022-12-14 08:57:09,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5645. [2022-12-14 08:57:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5644 states have (on average 1.2794117647058822) internal successors, (7221), 5644 states have internal predecessors, (7221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 7221 transitions. [2022-12-14 08:57:09,781 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 7221 transitions. Word has length 77 [2022-12-14 08:57:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:57:09,781 INFO L495 AbstractCegarLoop]: Abstraction has 5645 states and 7221 transitions. [2022-12-14 08:57:09,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 7221 transitions. [2022-12-14 08:57:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 08:57:09,782 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:57:09,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:57:09,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:57:09,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-14 08:57:09,984 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:57:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:57:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1951621714, now seen corresponding path program 1 times [2022-12-14 08:57:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:57:09,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69145131] [2022-12-14 08:57:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:57:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:57:10,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:57:10,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69145131] [2022-12-14 08:57:10,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69145131] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:57:10,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022802952] [2022-12-14 08:57:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:10,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:57:10,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:57:10,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:57:10,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:57:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:10,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 08:57:10,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:57:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 08:57:10,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:57:10,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022802952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:57:10,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:57:10,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 25 [2022-12-14 08:57:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170890876] [2022-12-14 08:57:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:57:10,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 08:57:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:57:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 08:57:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2022-12-14 08:57:10,962 INFO L87 Difference]: Start difference. First operand 5645 states and 7221 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:57:15,148 INFO L93 Difference]: Finished difference Result 9248 states and 11869 transitions. [2022-12-14 08:57:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 08:57:15,149 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-14 08:57:15,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:57:15,155 INFO L225 Difference]: With dead ends: 9248 [2022-12-14 08:57:15,155 INFO L226 Difference]: Without dead ends: 6865 [2022-12-14 08:57:15,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 08:57:15,157 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1404 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:57:15,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 1186 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:57:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2022-12-14 08:57:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 5688. [2022-12-14 08:57:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5688 states, 5687 states have (on average 1.2801125373659223) internal successors, (7280), 5687 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 7280 transitions. [2022-12-14 08:57:18,196 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 7280 transitions. Word has length 77 [2022-12-14 08:57:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:57:18,196 INFO L495 AbstractCegarLoop]: Abstraction has 5688 states and 7280 transitions. [2022-12-14 08:57:18,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 7280 transitions. [2022-12-14 08:57:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 08:57:18,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:57:18,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:57:18,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:57:18,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:57:18,399 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:57:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:57:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1589931852, now seen corresponding path program 1 times [2022-12-14 08:57:18,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:57:18,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802129007] [2022-12-14 08:57:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:18,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:57:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:57:18,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:57:18,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802129007] [2022-12-14 08:57:18,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802129007] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:57:18,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398989467] [2022-12-14 08:57:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:18,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:57:18,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:57:18,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:57:18,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:57:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:19,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 08:57:19,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:57:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:57:20,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:57:20,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398989467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:57:20,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:57:20,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-12-14 08:57:20,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612945211] [2022-12-14 08:57:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:57:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 08:57:20,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:57:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 08:57:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-12-14 08:57:20,125 INFO L87 Difference]: Start difference. First operand 5688 states and 7280 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:57:25,267 INFO L93 Difference]: Finished difference Result 10125 states and 13015 transitions. [2022-12-14 08:57:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:57:25,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-14 08:57:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:57:25,273 INFO L225 Difference]: With dead ends: 10125 [2022-12-14 08:57:25,273 INFO L226 Difference]: Without dead ends: 7646 [2022-12-14 08:57:25,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 08:57:25,276 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1091 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:57:25,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 2057 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 08:57:25,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2022-12-14 08:57:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 6010. [2022-12-14 08:57:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6010 states, 6009 states have (on average 1.2814112165085705) internal successors, (7700), 6009 states have internal predecessors, (7700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6010 states to 6010 states and 7700 transitions. [2022-12-14 08:57:28,638 INFO L78 Accepts]: Start accepts. Automaton has 6010 states and 7700 transitions. Word has length 77 [2022-12-14 08:57:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:57:28,639 INFO L495 AbstractCegarLoop]: Abstraction has 6010 states and 7700 transitions. [2022-12-14 08:57:28,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6010 states and 7700 transitions. [2022-12-14 08:57:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 08:57:28,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:57:28,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:57:28,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 08:57:28,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-14 08:57:28,841 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:57:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:57:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1083321571, now seen corresponding path program 1 times [2022-12-14 08:57:28,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:57:28,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103889495] [2022-12-14 08:57:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:28,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:57:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:57:29,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:57:29,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103889495] [2022-12-14 08:57:29,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103889495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:57:29,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724729722] [2022-12-14 08:57:29,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:29,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:57:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:57:29,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:57:29,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:57:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:29,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-14 08:57:29,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:57:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:57:32,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:57:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:57:45,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724729722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:57:45,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [223238309] [2022-12-14 08:57:45,306 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-12-14 08:57:45,306 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:57:45,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:57:45,306 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:57:45,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:57:45,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:45,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 08:57:45,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:45,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:45,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 08:58:32,418 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:59:45,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '543948#(and (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~2#1| 127) (= ~__return_7774~0 0) (or (not (<= (+ ~st3~0 ~st2~0 ~st1~0) 1)) (and (not (= (+ ~st3~0 ~st2~0 ~st1~0) 1)) (not (< (mod ~r1~0 256) 3)))) (<= 0 ~id3~0) (= ~__return_7588~0 0) (= ~nomsg~0 ~p1_new~0) (= ~__return_7619~0 0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~2#1|) (= ~__return_6777~0 0) (= ~__return_7801~0 0) (= ~__return_7421~0 0) (= ~__return_6864~0 0) (= ~__return_8390~0 0) (= ~__return_8196~0 0) (= ~__return_8436~0 0) (= ~__return_7297~0 0) (= ~__return_8465~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~8#1| 1)) (= (ite (= |ULTIMATE.start_main_~main__c1~0#1| 0) 0 1) |ULTIMATE.start_main_~__tmp_3~0#1|) (= ~__return_7907~0 0) (<= 0 ~id1~0) (= ~__return_8302~0 0) (= |ULTIMATE.start_main_~check__tmp~24#1| 1) (= |ULTIMATE.start_main_~check__tmp~1#1| 1) (= ~__return_6713~0 0) (<= ~__return_6348~0 1) (= ~__return_8493~0 0) (= ~__return_8103~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~2#1| 1)) (= ~p2~0 0) (<= 1 ~r1~0) (= |ULTIMATE.start_main_~main__c1~0#1| ~__return_6554~0) (= ~__return_8072~0 0) (= ~__return_7472~0 0) (<= 0 ~mode3~0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~1#1| 1)) (= ~__return_7966~0 0) (<= ~send1~0 127) (<= 1 ~__return_6487~0) (= ~__return_6833~0 0) (= ~p3_new~0 ~nomsg~0) (= ~__return_6911~0 0) (<= 0 (+ ~p3_old~0 1)) (<= 0 |ULTIMATE.start_main_~__tmp_24~0#1|) (= (mod |ULTIMATE.start_main_~assert__arg~2#1| 256) 0) (<= ~mode2~0 1) (<= 1 ~__return_7935~0) (= ~__return_7054~0 0) (= ~__return_7188~0 0) (= ~__return_7131~0 0) (= ~__return_7021~0 0) (= ~__return_7555~0 0) (<= ~mode3~0 1) (<= 0 |ULTIMATE.start_main_~assert__arg~23#1|) (= ~__return_8630~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= ~id1~0 127) (= ~__return_7268~0 0) (<= (+ ~p3_old~0 1) 0) (= ~__return_8524~0 0) (= ~__return_6950~0 0) (= ~nomsg~0 ~p2_new~0) (= |ULTIMATE.start_main_~check__tmp~2#1| ~__return_6554~0) (= ~__return_8044~0 0) (= ~__return_7703~0 0) (= |ULTIMATE.start_main_~init__tmp~0#1| 1) (= ~__return_8661~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_7666~0 0) (= ~__return_7832~0 0) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (= ~__return_6426~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~2#1| 1) 0) (= ~__return_8167~0 0) (<= ~__return_7935~0 1) (<= 1 ~__return_6348~0) (= ~__return_8602~0 0) (= ~__return_7219~0 0) (= ~__return_8359~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~8#1| 1) 0) (= ~__return_7356~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (= ~__return_8255~0 0) (= ~__return_6984~0 0) (<= ~id3~0 127) (= ~__return_8015~0 0) (<= |ULTIMATE.start_main_~assert__arg~23#1| 1) (<= 0 ~id2~0) (= |#NULL.offset| 0) (<= 0 (+ ~nomsg~0 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~1#1| 1) 0) (<= ~__return_6487~0 1) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1| 127) (<= |ULTIMATE.start_main_~__tmp_24~0#1| 1) (<= (+ |ULTIMATE.start_main_~node1__m1~1#1| 1) 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= |ULTIMATE.start_main_~assert__arg~2#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (= ~__return_7878~0 0) (= ~__return_7737~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (= ~p3~0 0) (= ~__return_7506~0 0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1|) (= ~p1~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 ~send1~0) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (= ~__return_main~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~1#1| 1)) (= ~__return_7160~0 0) (= ~__return_8224~0 0) (= ~__return_8331~0 0) (= ~__return_7085~0 0) (= ~__return_8573~0 0) (= ~__return_7325~0 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= |ULTIMATE.start_main_~main__i2~0#1| 0))' at error location [2022-12-14 08:59:45,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:59:45,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:59:45,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 63 [2022-12-14 08:59:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867691118] [2022-12-14 08:59:45,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:59:45,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-14 08:59:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:59:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-14 08:59:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1991, Invalid=12289, Unknown=0, NotChecked=0, Total=14280 [2022-12-14 08:59:45,449 INFO L87 Difference]: Start difference. First operand 6010 states and 7700 transitions. Second operand has 63 states, 63 states have (on average 3.761904761904762) internal successors, (237), 63 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:04:02,384 INFO L93 Difference]: Finished difference Result 30196 states and 39035 transitions. [2022-12-14 09:04:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 476 states. [2022-12-14 09:04:02,385 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.761904761904762) internal successors, (237), 63 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-14 09:04:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:04:02,417 INFO L225 Difference]: With dead ends: 30196 [2022-12-14 09:04:02,417 INFO L226 Difference]: Without dead ends: 29646 [2022-12-14 09:04:02,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 129 SyntacticMatches, 10 SemanticMatches, 586 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159520 ImplicationChecksByTransitivity, 288.7s TimeCoverageRelationStatistics Valid=34273, Invalid=310883, Unknown=0, NotChecked=0, Total=345156 [2022-12-14 09:04:02,445 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 11359 mSDsluCounter, 7320 mSDsCounter, 0 mSdLazyCounter, 13667 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11359 SdHoareTripleChecker+Valid, 7694 SdHoareTripleChecker+Invalid, 14487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 13667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:04:02,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11359 Valid, 7694 Invalid, 14487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [820 Valid, 13667 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2022-12-14 09:04:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29646 states. [2022-12-14 09:04:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29646 to 13757. [2022-12-14 09:04:13,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13757 states, 13756 states have (on average 1.272826403024135) internal successors, (17509), 13756 states have internal predecessors, (17509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:13,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13757 states to 13757 states and 17509 transitions. [2022-12-14 09:04:13,335 INFO L78 Accepts]: Start accepts. Automaton has 13757 states and 17509 transitions. Word has length 80 [2022-12-14 09:04:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:04:13,335 INFO L495 AbstractCegarLoop]: Abstraction has 13757 states and 17509 transitions. [2022-12-14 09:04:13,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.761904761904762) internal successors, (237), 63 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:04:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13757 states and 17509 transitions. [2022-12-14 09:04:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 09:04:13,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:04:13,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:04:13,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:04:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-14 09:04:13,539 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 09:04:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:04:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2066332037, now seen corresponding path program 1 times [2022-12-14 09:04:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:04:13,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252676903] [2022-12-14 09:04:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:04:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:14,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:04:14,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252676903] [2022-12-14 09:04:14,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252676903] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:04:14,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982566695] [2022-12-14 09:04:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:04:14,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:04:14,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:04:14,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:04:14,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:04:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:04:14,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-14 09:04:14,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:04:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:16,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:04:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:04:24,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982566695] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:04:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [635151905] [2022-12-14 09:04:24,941 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-12-14 09:04:24,941 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:04:24,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:04:24,942 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:04:24,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:04:25,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:04:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:04:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:04:25,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 09:04:25,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:25,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:25,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-12-14 09:04:39,686 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:05:54,040 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '616974#(and (<= (+ |ULTIMATE.start_main_~node2__m2~1#1| 1) 0) (= ~__return_7774~0 0) (<= ~send3~0 127) (<= 0 ~id3~0) (= ~__return_7588~0 0) (= |ULTIMATE.start_main_~check__tmp~53#1| 1) (<= (+ |ULTIMATE.start_main_~node3__m3~2#1| 1) 0) (<= |ULTIMATE.start_main_~assert__arg~52#1| 1) (<= 0 (+ ~p3_new~0 1)) (= ~__return_7619~0 0) (= ~__return_6777~0 0) (= ~__return_7801~0 0) (<= ~st3~0 0) (= ~__return_7421~0 0) (= ~__return_6864~0 0) (= ~__return_8390~0 0) (= ~__return_8196~0 0) (<= 0 ~mode1~0) (= ~__return_8436~0 0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1| 127) (= ~__return_7297~0 0) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~1#1|) (<= 0 |ULTIMATE.start_main_~__tmp_3~0#1|) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (= ~__return_7907~0 0) (<= 0 ~id1~0) (= ~__return_8302~0 0) (= ~__return_7935~0 0) (= |ULTIMATE.start_main_~check__tmp~1#1| 1) (<= 0 |ULTIMATE.start_main_~check__tmp~2#1|) (= ~__return_6713~0 0) (<= ~__return_6348~0 1) (= ~__return_8493~0 0) (= ~__return_8103~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~2#1| 1)) (= ~p2~0 0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (<= 1 ~r1~0) (<= ~__return_8465~0 1) (= ~__return_8072~0 0) (= ~__return_7472~0 0) (<= 0 ~mode3~0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~1#1| 1)) (<= 0 |ULTIMATE.start_main_~assert__arg~52#1|) (= ~__return_7966~0 0) (<= 1 ~__return_6487~0) (= ~__return_6833~0 0) (= ~__return_6911~0 0) (<= |ULTIMATE.start_main_~__tmp_53~0#1| 1) (<= (+ |ULTIMATE.start_main_~node3__m3~16#1| 1) 0) (= (mod |ULTIMATE.start_main_~assert__arg~2#1| 256) 0) (<= ~mode2~0 1) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1|) (<= |ULTIMATE.start_main_~check__tmp~2#1| 1) (= ~__return_7054~0 0) (= ~__return_7188~0 0) (= ~__return_7131~0 0) (= ~__return_7021~0 0) (= ~__return_7555~0 0) (<= ~mode3~0 1) (= ~__return_8630~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= 0 (+ ~p2_old~0 1)) (<= ~id1~0 127) (= ~__return_7268~0 0) (= ~__return_8524~0 0) (= ~__return_6950~0 0) (= ~st1~0 0) (= ~__return_8044~0 0) (= ~__return_7703~0 0) (= |ULTIMATE.start_main_~init__tmp~0#1| 1) (= ~__return_8661~0 0) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__return_7666~0 0) (= ~__return_7832~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~5#1| 1) 0) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~1#1| 1)) (= ~__return_6426~0 0) (<= (+ ~p2_new~0 1) 0) (<= (+ |ULTIMATE.start_main_~node1__m1~2#1| 1) 0) (= ~__return_8167~0 0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~1#1| 127) (<= 1 ~__return_6348~0) (<= 0 ~__return_6554~0) (= ~__return_8602~0 0) (= ~__return_7219~0 0) (= ~__return_8359~0 0) (= ~__return_7356~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (= ~__return_8255~0 0) (= ~__return_6984~0 0) (<= ~id3~0 127) (= ~__return_8015~0 0) (<= 0 ~id2~0) (= |#NULL.offset| 0) (= ~st2~0 0) (<= 0 (+ ~nomsg~0 1)) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~2#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~1#1| 1) 0) (<= ~__return_6487~0 1) (<= 0 |ULTIMATE.start_main_~assert__arg~2#1|) (<= 0 ~mode2~0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~5#1| 1)) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= ~__return_7878~0 0) (<= (+ ~p3_new~0 1) 0) (= ~__return_7737~0 0) (= ~p3~0 0) (<= (+ ~p2_old~0 1) 0) (<= 0 (+ ~p1_new~0 1)) (<= ~__return_6554~0 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~16#1| 1)) (= ~__return_7506~0 0) (<= ~r1~0 2) (<= 0 ~send3~0) (= ~p1~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~main__c1~0#1|) (= ~__return_main~0 0) (= ~__return_7160~0 0) (= ~__return_8224~0 0) (<= |ULTIMATE.start_main_~assert__arg~2#1| 1) (= ~__return_8331~0 0) (= ~__return_7085~0 0) (= ~__return_8573~0 0) (= ~__return_7325~0 0) (= |#NULL.base| 0) (<= 1 ~__return_8465~0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= |ULTIMATE.start_main_~main__i2~0#1| 0) (<= 0 |ULTIMATE.start_main_~__tmp_53~0#1|))' at error location [2022-12-14 09:05:54,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:05:54,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:05:54,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 22] total 59 [2022-12-14 09:05:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335325679] [2022-12-14 09:05:54,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:05:54,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 09:05:54,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:05:54,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 09:05:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1815, Invalid=10175, Unknown=0, NotChecked=0, Total=11990 [2022-12-14 09:05:54,042 INFO L87 Difference]: Start difference. First operand 13757 states and 17509 transitions. Second operand has 59 states, 59 states have (on average 4.016949152542373) internal successors, (237), 59 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:07:41,431 INFO L93 Difference]: Finished difference Result 41510 states and 53231 transitions. [2022-12-14 09:07:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2022-12-14 09:07:41,432 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.016949152542373) internal successors, (237), 59 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-14 09:07:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:07:41,475 INFO L225 Difference]: With dead ends: 41510 [2022-12-14 09:07:41,475 INFO L226 Difference]: Without dead ends: 39872 [2022-12-14 09:07:41,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 134 SyntacticMatches, 15 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74519 ImplicationChecksByTransitivity, 133.4s TimeCoverageRelationStatistics Valid=14010, Invalid=149610, Unknown=0, NotChecked=0, Total=163620 [2022-12-14 09:07:41,495 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 7396 mSDsluCounter, 6825 mSDsCounter, 0 mSdLazyCounter, 11619 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7396 SdHoareTripleChecker+Valid, 7198 SdHoareTripleChecker+Invalid, 12002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 11619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:07:41,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7396 Valid, 7198 Invalid, 12002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [383 Valid, 11619 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-12-14 09:07:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39872 states. [2022-12-14 09:08:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39872 to 21076. [2022-12-14 09:08:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21076 states, 21075 states have (on average 1.2773902728351128) internal successors, (26921), 21075 states have internal predecessors, (26921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:08:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21076 states to 21076 states and 26921 transitions. [2022-12-14 09:08:00,555 INFO L78 Accepts]: Start accepts. Automaton has 21076 states and 26921 transitions. Word has length 80 [2022-12-14 09:08:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:00,556 INFO L495 AbstractCegarLoop]: Abstraction has 21076 states and 26921 transitions. [2022-12-14 09:08:00,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.016949152542373) internal successors, (237), 59 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:08:00,556 INFO L276 IsEmpty]: Start isEmpty. Operand 21076 states and 26921 transitions. [2022-12-14 09:08:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 09:08:00,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:00,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:08:00,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 09:08:00,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8cc71f-c1b1-4365-9270-c354eaf96794/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-14 09:08:00,760 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 09:08:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1496387046, now seen corresponding path program 1 times [2022-12-14 09:08:00,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:00,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485774959] [2022-12-14 09:08:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:00,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 09:08:00,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:08:00,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485774959] [2022-12-14 09:08:00,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485774959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:08:00,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:08:00,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:08:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013177454] [2022-12-14 09:08:00,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:08:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:08:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:08:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:08:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:08:00,852 INFO L87 Difference]: Start difference. First operand 21076 states and 26921 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)