./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54199c4744c1bc6f90b801fad85d1b6d237818e3b8e71cae069cfd39ac31a054 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 17:08:10,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 17:08:10,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 17:08:10,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 17:08:10,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 17:08:10,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 17:08:10,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 17:08:10,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 17:08:10,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 17:08:10,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 17:08:10,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 17:08:10,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 17:08:10,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 17:08:10,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 17:08:10,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 17:08:10,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 17:08:10,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 17:08:10,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 17:08:10,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 17:08:10,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 17:08:10,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 17:08:10,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 17:08:10,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 17:08:10,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 17:08:10,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 17:08:10,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 17:08:10,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 17:08:10,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 17:08:10,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 17:08:10,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 17:08:10,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 17:08:10,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 17:08:10,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 17:08:10,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 17:08:10,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 17:08:10,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 17:08:10,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 17:08:10,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 17:08:10,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 17:08:10,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 17:08:10,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 17:08:10,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 17:08:10,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 17:08:10,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 17:08:10,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 17:08:10,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 17:08:10,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 17:08:10,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 17:08:10,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 17:08:10,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 17:08:10,886 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 17:08:10,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 17:08:10,887 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 17:08:10,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 17:08:10,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 17:08:10,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 17:08:10,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 17:08:10,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 17:08:10,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 17:08:10,888 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 17:08:10,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 17:08:10,888 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 17:08:10,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 17:08:10,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 17:08:10,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 17:08:10,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 17:08:10,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 17:08:10,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 17:08:10,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 17:08:10,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 17:08:10,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 17:08:10,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 17:08:10,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 17:08:10,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 17:08:10,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 17:08:10,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 17:08:10,892 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54199c4744c1bc6f90b801fad85d1b6d237818e3b8e71cae069cfd39ac31a054 [2021-12-17 17:08:11,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 17:08:11,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 17:08:11,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 17:08:11,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 17:08:11,085 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 17:08:11,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 17:08:11,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22f74fb7/9802285b62f24e6fa5e8ab18ab31e874/FLAGd79e97e3b [2021-12-17 17:08:11,588 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 17:08:11,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 17:08:11,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22f74fb7/9802285b62f24e6fa5e8ab18ab31e874/FLAGd79e97e3b [2021-12-17 17:08:11,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22f74fb7/9802285b62f24e6fa5e8ab18ab31e874 [2021-12-17 17:08:11,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 17:08:11,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 17:08:11,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 17:08:11,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 17:08:11,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 17:08:11,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:08:11" (1/1) ... [2021-12-17 17:08:11,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b577034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:11, skipping insertion in model container [2021-12-17 17:08:11,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:08:11" (1/1) ... [2021-12-17 17:08:11,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 17:08:11,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 17:08:11,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15593,15606] [2021-12-17 17:08:11,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16240,16253] [2021-12-17 17:08:11,924 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17624,17637] [2021-12-17 17:08:11,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18600,18613] [2021-12-17 17:08:11,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27965,27978] [2021-12-17 17:08:12,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 17:08:12,027 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 17:08:12,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15593,15606] [2021-12-17 17:08:12,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16240,16253] [2021-12-17 17:08:12,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17624,17637] [2021-12-17 17:08:12,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18600,18613] [2021-12-17 17:08:12,130 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27965,27978] [2021-12-17 17:08:12,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 17:08:12,170 INFO L208 MainTranslator]: Completed translation [2021-12-17 17:08:12,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12 WrapperNode [2021-12-17 17:08:12,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 17:08:12,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 17:08:12,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 17:08:12,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 17:08:12,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,249 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1696 [2021-12-17 17:08:12,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 17:08:12,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 17:08:12,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 17:08:12,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 17:08:12,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 17:08:12,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 17:08:12,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 17:08:12,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 17:08:12,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (1/1) ... [2021-12-17 17:08:12,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 17:08:12,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 17:08:12,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 17:08:12,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 17:08:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 17:08:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 17:08:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 17:08:12,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 17:08:12,559 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 17:08:12,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 17:08:13,519 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 17:08:13,528 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 17:08:13,528 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 17:08:13,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:08:13 BoogieIcfgContainer [2021-12-17 17:08:13,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 17:08:13,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 17:08:13,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 17:08:13,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 17:08:13,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:08:11" (1/3) ... [2021-12-17 17:08:13,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cd92df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:08:13, skipping insertion in model container [2021-12-17 17:08:13,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:08:12" (2/3) ... [2021-12-17 17:08:13,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cd92df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:08:13, skipping insertion in model container [2021-12-17 17:08:13,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:08:13" (3/3) ... [2021-12-17 17:08:13,536 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 17:08:13,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 17:08:13,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-17 17:08:13,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 17:08:13,589 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 17:08:13,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-17 17:08:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-17 17:08:13,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:13,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:13,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1209893175, now seen corresponding path program 1 times [2021-12-17 17:08:13,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240215122] [2021-12-17 17:08:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:13,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:14,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:14,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240215122] [2021-12-17 17:08:14,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240215122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:14,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:14,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:08:14,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471467430] [2021-12-17 17:08:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:14,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:08:14,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:08:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:08:14,044 INFO L87 Difference]: Start difference. First operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:14,219 INFO L93 Difference]: Finished difference Result 778 states and 1366 transitions. [2021-12-17 17:08:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:08:14,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-17 17:08:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:14,235 INFO L225 Difference]: With dead ends: 778 [2021-12-17 17:08:14,235 INFO L226 Difference]: Without dead ends: 612 [2021-12-17 17:08:14,238 INFO L932 BasicCegarLoop]: 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 [2021-12-17 17:08:14,240 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 446 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:14,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1365 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:08:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-12-17 17:08:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2021-12-17 17:08:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 605 states have (on average 1.4793388429752066) internal successors, (895), 609 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2021-12-17 17:08:14,300 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 150 [2021-12-17 17:08:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:14,300 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2021-12-17 17:08:14,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2021-12-17 17:08:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-17 17:08:14,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:14,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:14,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 17:08:14,304 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:14,304 INFO L85 PathProgramCache]: Analyzing trace with hash 811877431, now seen corresponding path program 1 times [2021-12-17 17:08:14,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:14,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616840819] [2021-12-17 17:08:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:14,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:14,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616840819] [2021-12-17 17:08:14,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616840819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:14,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:14,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:08:14,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447554628] [2021-12-17 17:08:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:14,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:08:14,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:08:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:08:14,418 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:14,526 INFO L93 Difference]: Finished difference Result 1235 states and 1870 transitions. [2021-12-17 17:08:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:08:14,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-17 17:08:14,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:14,533 INFO L225 Difference]: With dead ends: 1235 [2021-12-17 17:08:14,533 INFO L226 Difference]: Without dead ends: 1012 [2021-12-17 17:08:14,536 INFO L932 BasicCegarLoop]: 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 [2021-12-17 17:08:14,538 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 369 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:14,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 1122 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:08:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-12-17 17:08:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1010. [2021-12-17 17:08:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1005 states have (on average 1.499502487562189) internal successors, (1507), 1009 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1507 transitions. [2021-12-17 17:08:14,577 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1507 transitions. Word has length 150 [2021-12-17 17:08:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:14,579 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1507 transitions. [2021-12-17 17:08:14,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1507 transitions. [2021-12-17 17:08:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-17 17:08:14,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:14,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:14,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 17:08:14,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:14,585 INFO L85 PathProgramCache]: Analyzing trace with hash 811446455, now seen corresponding path program 1 times [2021-12-17 17:08:14,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:14,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320259] [2021-12-17 17:08:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:14,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:14,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:14,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320259] [2021-12-17 17:08:14,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:14,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:14,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:08:14,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530047662] [2021-12-17 17:08:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:14,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:08:14,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:08:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:14,737 INFO L87 Difference]: Start difference. First operand 1010 states and 1507 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:14,862 INFO L93 Difference]: Finished difference Result 2960 states and 4404 transitions. [2021-12-17 17:08:14,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:08:14,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-17 17:08:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:14,869 INFO L225 Difference]: With dead ends: 2960 [2021-12-17 17:08:14,869 INFO L226 Difference]: Without dead ends: 1959 [2021-12-17 17:08:14,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:08:14,872 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 1291 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:14,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 1534 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-12-17 17:08:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1917. [2021-12-17 17:08:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1912 states have (on average 1.487970711297071) internal successors, (2845), 1916 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2845 transitions. [2021-12-17 17:08:14,916 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2845 transitions. Word has length 150 [2021-12-17 17:08:14,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:14,917 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 2845 transitions. [2021-12-17 17:08:14,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:14,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2845 transitions. [2021-12-17 17:08:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-17 17:08:14,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:14,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:14,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 17:08:14,920 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -855435253, now seen corresponding path program 1 times [2021-12-17 17:08:14,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:14,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796032159] [2021-12-17 17:08:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:14,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:14,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:14,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796032159] [2021-12-17 17:08:14,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796032159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:14,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:14,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:08:14,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201407504] [2021-12-17 17:08:14,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:14,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:08:14,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:08:14,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:08:14,981 INFO L87 Difference]: Start difference. First operand 1917 states and 2845 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:15,077 INFO L93 Difference]: Finished difference Result 5713 states and 8473 transitions. [2021-12-17 17:08:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:08:15,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-12-17 17:08:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:15,088 INFO L225 Difference]: With dead ends: 5713 [2021-12-17 17:08:15,088 INFO L226 Difference]: Without dead ends: 3824 [2021-12-17 17:08:15,092 INFO L932 BasicCegarLoop]: 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 [2021-12-17 17:08:15,096 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 594 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:15,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1397 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2021-12-17 17:08:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 1919. [2021-12-17 17:08:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1914 states have (on average 1.4874608150470219) internal successors, (2847), 1918 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2847 transitions. [2021-12-17 17:08:15,173 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2847 transitions. Word has length 151 [2021-12-17 17:08:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:15,174 INFO L470 AbstractCegarLoop]: Abstraction has 1919 states and 2847 transitions. [2021-12-17 17:08:15,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:15,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2847 transitions. [2021-12-17 17:08:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-17 17:08:15,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:15,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:15,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 17:08:15,177 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:15,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:15,178 INFO L85 PathProgramCache]: Analyzing trace with hash 299372728, now seen corresponding path program 1 times [2021-12-17 17:08:15,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:15,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673397227] [2021-12-17 17:08:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:15,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:15,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:15,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673397227] [2021-12-17 17:08:15,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673397227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:15,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:15,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:08:15,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586329603] [2021-12-17 17:08:15,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:15,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:08:15,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:08:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:15,283 INFO L87 Difference]: Start difference. First operand 1919 states and 2847 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:15,463 INFO L93 Difference]: Finished difference Result 5591 states and 8265 transitions. [2021-12-17 17:08:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:08:15,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2021-12-17 17:08:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:15,474 INFO L225 Difference]: With dead ends: 5591 [2021-12-17 17:08:15,474 INFO L226 Difference]: Without dead ends: 3702 [2021-12-17 17:08:15,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:08:15,477 INFO L933 BasicCegarLoop]: 1050 mSDtfsCounter, 1197 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:15,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 1603 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2021-12-17 17:08:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3660. [2021-12-17 17:08:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3655 states have (on average 1.4722298221614227) internal successors, (5381), 3659 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5381 transitions. [2021-12-17 17:08:15,609 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5381 transitions. Word has length 152 [2021-12-17 17:08:15,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:15,610 INFO L470 AbstractCegarLoop]: Abstraction has 3660 states and 5381 transitions. [2021-12-17 17:08:15,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:15,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5381 transitions. [2021-12-17 17:08:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-17 17:08:15,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:15,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:15,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 17:08:15,617 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1884643476, now seen corresponding path program 1 times [2021-12-17 17:08:15,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:15,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279431944] [2021-12-17 17:08:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:15,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:15,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:15,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279431944] [2021-12-17 17:08:15,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279431944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:15,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:15,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:08:15,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857552040] [2021-12-17 17:08:15,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:15,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:08:15,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:08:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:08:15,653 INFO L87 Difference]: Start difference. First operand 3660 states and 5381 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:15,856 INFO L93 Difference]: Finished difference Result 10904 states and 16023 transitions. [2021-12-17 17:08:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:08:15,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-12-17 17:08:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:15,876 INFO L225 Difference]: With dead ends: 10904 [2021-12-17 17:08:15,877 INFO L226 Difference]: Without dead ends: 7288 [2021-12-17 17:08:15,881 INFO L932 BasicCegarLoop]: 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 [2021-12-17 17:08:15,882 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 580 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:15,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1331 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7288 states. [2021-12-17 17:08:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7288 to 3664. [2021-12-17 17:08:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3659 states have (on average 1.47171358294616) internal successors, (5385), 3663 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 5385 transitions. [2021-12-17 17:08:16,063 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 5385 transitions. Word has length 153 [2021-12-17 17:08:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:16,063 INFO L470 AbstractCegarLoop]: Abstraction has 3664 states and 5385 transitions. [2021-12-17 17:08:16,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 5385 transitions. [2021-12-17 17:08:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-17 17:08:16,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:16,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:16,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 17:08:16,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2086443719, now seen corresponding path program 1 times [2021-12-17 17:08:16,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:16,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846482650] [2021-12-17 17:08:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:16,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:16,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:16,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846482650] [2021-12-17 17:08:16,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846482650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:16,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:16,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:08:16,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167072854] [2021-12-17 17:08:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:16,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:08:16,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:08:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:16,160 INFO L87 Difference]: Start difference. First operand 3664 states and 5385 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:16,409 INFO L93 Difference]: Finished difference Result 9919 states and 14516 transitions. [2021-12-17 17:08:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:08:16,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2021-12-17 17:08:16,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:16,440 INFO L225 Difference]: With dead ends: 9919 [2021-12-17 17:08:16,440 INFO L226 Difference]: Without dead ends: 6303 [2021-12-17 17:08:16,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:08:16,446 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 1418 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:16,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 1369 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2021-12-17 17:08:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 6261. [2021-12-17 17:08:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 6256 states have (on average 1.45076726342711) internal successors, (9076), 6260 states have internal predecessors, (9076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9076 transitions. [2021-12-17 17:08:16,687 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9076 transitions. Word has length 154 [2021-12-17 17:08:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:16,687 INFO L470 AbstractCegarLoop]: Abstraction has 6261 states and 9076 transitions. [2021-12-17 17:08:16,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9076 transitions. [2021-12-17 17:08:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-17 17:08:16,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:16,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:16,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 17:08:16,695 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1188564147, now seen corresponding path program 1 times [2021-12-17 17:08:16,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:16,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239646249] [2021-12-17 17:08:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:16,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:16,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:16,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239646249] [2021-12-17 17:08:16,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239646249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:16,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:16,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:08:16,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339319828] [2021-12-17 17:08:16,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:16,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:08:16,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:16,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:08:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:08:16,730 INFO L87 Difference]: Start difference. First operand 6261 states and 9076 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:17,030 INFO L93 Difference]: Finished difference Result 18351 states and 26650 transitions. [2021-12-17 17:08:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:08:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-12-17 17:08:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:17,053 INFO L225 Difference]: With dead ends: 18351 [2021-12-17 17:08:17,055 INFO L226 Difference]: Without dead ends: 12430 [2021-12-17 17:08:17,065 INFO L932 BasicCegarLoop]: 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 [2021-12-17 17:08:17,066 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 566 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:17,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1764 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12430 states. [2021-12-17 17:08:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12430 to 6269. [2021-12-17 17:08:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 6264 states have (on average 1.450191570881226) internal successors, (9084), 6268 states have internal predecessors, (9084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 9084 transitions. [2021-12-17 17:08:17,392 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 9084 transitions. Word has length 155 [2021-12-17 17:08:17,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:17,392 INFO L470 AbstractCegarLoop]: Abstraction has 6269 states and 9084 transitions. [2021-12-17 17:08:17,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 9084 transitions. [2021-12-17 17:08:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 17:08:17,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:17,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:17,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 17:08:17,400 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1615046538, now seen corresponding path program 1 times [2021-12-17 17:08:17,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279035377] [2021-12-17 17:08:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:17,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:17,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:17,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279035377] [2021-12-17 17:08:17,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279035377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:17,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:17,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 17:08:17,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460381330] [2021-12-17 17:08:17,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:17,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:08:17,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:08:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:08:17,476 INFO L87 Difference]: Start difference. First operand 6269 states and 9084 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:17,837 INFO L93 Difference]: Finished difference Result 18287 states and 26409 transitions. [2021-12-17 17:08:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:08:17,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2021-12-17 17:08:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:17,858 INFO L225 Difference]: With dead ends: 18287 [2021-12-17 17:08:17,858 INFO L226 Difference]: Without dead ends: 12106 [2021-12-17 17:08:17,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:08:17,870 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 1786 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:17,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 1585 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12106 states. [2021-12-17 17:08:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12106 to 12064. [2021-12-17 17:08:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12064 states, 12059 states have (on average 1.431793681068082) internal successors, (17266), 12063 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12064 states to 12064 states and 17266 transitions. [2021-12-17 17:08:18,317 INFO L78 Accepts]: Start accepts. Automaton has 12064 states and 17266 transitions. Word has length 156 [2021-12-17 17:08:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:18,317 INFO L470 AbstractCegarLoop]: Abstraction has 12064 states and 17266 transitions. [2021-12-17 17:08:18,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 12064 states and 17266 transitions. [2021-12-17 17:08:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 17:08:18,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:18,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:18,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 17:08:18,329 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash 625143354, now seen corresponding path program 1 times [2021-12-17 17:08:18,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:18,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46458104] [2021-12-17 17:08:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:18,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:18,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46458104] [2021-12-17 17:08:18,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46458104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:18,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:18,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:08:18,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564204906] [2021-12-17 17:08:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:18,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:08:18,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:08:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:18,418 INFO L87 Difference]: Start difference. First operand 12064 states and 17266 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:18,772 INFO L93 Difference]: Finished difference Result 21241 states and 30375 transitions. [2021-12-17 17:08:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:08:18,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2021-12-17 17:08:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:18,786 INFO L225 Difference]: With dead ends: 21241 [2021-12-17 17:08:18,786 INFO L226 Difference]: Without dead ends: 9251 [2021-12-17 17:08:18,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:08:18,798 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 65 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:18,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1846 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9251 states. [2021-12-17 17:08:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9251 to 9251. [2021-12-17 17:08:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9251 states, 9246 states have (on average 1.428942245295263) internal successors, (13212), 9250 states have internal predecessors, (13212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 13212 transitions. [2021-12-17 17:08:19,177 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 13212 transitions. Word has length 156 [2021-12-17 17:08:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:19,177 INFO L470 AbstractCegarLoop]: Abstraction has 9251 states and 13212 transitions. [2021-12-17 17:08:19,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 13212 transitions. [2021-12-17 17:08:19,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-17 17:08:19,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:19,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:19,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 17:08:19,188 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2020914348, now seen corresponding path program 1 times [2021-12-17 17:08:19,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:19,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549546151] [2021-12-17 17:08:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:19,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:19,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:19,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549546151] [2021-12-17 17:08:19,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549546151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:19,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:19,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:08:19,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257480701] [2021-12-17 17:08:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:19,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:08:19,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:08:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:08:19,222 INFO L87 Difference]: Start difference. First operand 9251 states and 13212 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:19,621 INFO L93 Difference]: Finished difference Result 22836 states and 33228 transitions. [2021-12-17 17:08:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:08:19,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2021-12-17 17:08:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:19,645 INFO L225 Difference]: With dead ends: 22836 [2021-12-17 17:08:19,645 INFO L226 Difference]: Without dead ends: 14197 [2021-12-17 17:08:19,657 INFO L932 BasicCegarLoop]: 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 [2021-12-17 17:08:19,658 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 315 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:19,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1277 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14197 states. [2021-12-17 17:08:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14197 to 12165. [2021-12-17 17:08:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12165 states, 12160 states have (on average 1.4734375) internal successors, (17917), 12164 states have internal predecessors, (17917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12165 states to 12165 states and 17917 transitions. [2021-12-17 17:08:20,106 INFO L78 Accepts]: Start accepts. Automaton has 12165 states and 17917 transitions. Word has length 158 [2021-12-17 17:08:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:20,106 INFO L470 AbstractCegarLoop]: Abstraction has 12165 states and 17917 transitions. [2021-12-17 17:08:20,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12165 states and 17917 transitions. [2021-12-17 17:08:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-17 17:08:20,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:20,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:20,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 17:08:20,115 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1799463421, now seen corresponding path program 1 times [2021-12-17 17:08:20,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:20,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287673170] [2021-12-17 17:08:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:20,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:20,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:20,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287673170] [2021-12-17 17:08:20,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287673170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:20,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:20,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:08:20,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375990002] [2021-12-17 17:08:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:20,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:08:20,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:08:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:08:20,155 INFO L87 Difference]: Start difference. First operand 12165 states and 17917 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:20,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:20,705 INFO L93 Difference]: Finished difference Result 28249 states and 42327 transitions. [2021-12-17 17:08:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:08:20,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-12-17 17:08:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:20,734 INFO L225 Difference]: With dead ends: 28249 [2021-12-17 17:08:20,734 INFO L226 Difference]: Without dead ends: 18499 [2021-12-17 17:08:20,746 INFO L932 BasicCegarLoop]: 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 [2021-12-17 17:08:20,747 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 352 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:20,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1279 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18499 states. [2021-12-17 17:08:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18499 to 16601. [2021-12-17 17:08:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16601 states, 16596 states have (on average 1.5057242709086527) internal successors, (24989), 16600 states have internal predecessors, (24989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16601 states to 16601 states and 24989 transitions. [2021-12-17 17:08:21,512 INFO L78 Accepts]: Start accepts. Automaton has 16601 states and 24989 transitions. Word has length 160 [2021-12-17 17:08:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:21,512 INFO L470 AbstractCegarLoop]: Abstraction has 16601 states and 24989 transitions. [2021-12-17 17:08:21,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 16601 states and 24989 transitions. [2021-12-17 17:08:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-17 17:08:21,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:21,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:21,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 17:08:21,521 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:21,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 541164788, now seen corresponding path program 1 times [2021-12-17 17:08:21,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:21,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532115924] [2021-12-17 17:08:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:21,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:21,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:21,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532115924] [2021-12-17 17:08:21,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532115924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:21,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:21,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 17:08:21,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751877060] [2021-12-17 17:08:21,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:21,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 17:08:21,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:21,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 17:08:21,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 17:08:21,661 INFO L87 Difference]: Start difference. First operand 16601 states and 24989 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:24,969 INFO L93 Difference]: Finished difference Result 83311 states and 127734 transitions. [2021-12-17 17:08:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 17:08:24,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-17 17:08:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:25,091 INFO L225 Difference]: With dead ends: 83311 [2021-12-17 17:08:25,092 INFO L226 Difference]: Without dead ends: 67460 [2021-12-17 17:08:25,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-12-17 17:08:25,118 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 6697 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6697 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:25,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6697 Valid, 2795 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 17:08:25,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67460 states. [2021-12-17 17:08:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67460 to 44914. [2021-12-17 17:08:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44914 states, 44909 states have (on average 1.5069139816072503) internal successors, (67674), 44913 states have internal predecessors, (67674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44914 states to 44914 states and 67674 transitions. [2021-12-17 17:08:27,636 INFO L78 Accepts]: Start accepts. Automaton has 44914 states and 67674 transitions. Word has length 161 [2021-12-17 17:08:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:27,636 INFO L470 AbstractCegarLoop]: Abstraction has 44914 states and 67674 transitions. [2021-12-17 17:08:27,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 44914 states and 67674 transitions. [2021-12-17 17:08:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-17 17:08:27,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:27,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:27,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 17:08:27,654 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1621225530, now seen corresponding path program 1 times [2021-12-17 17:08:27,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:27,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331580251] [2021-12-17 17:08:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:27,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:27,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:27,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331580251] [2021-12-17 17:08:27,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331580251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:27,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:27,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:08:27,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687086389] [2021-12-17 17:08:27,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:27,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:08:27,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:08:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:27,908 INFO L87 Difference]: Start difference. First operand 44914 states and 67674 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:30,216 INFO L93 Difference]: Finished difference Result 86497 states and 133603 transitions. [2021-12-17 17:08:30,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:08:30,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-17 17:08:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:30,311 INFO L225 Difference]: With dead ends: 86497 [2021-12-17 17:08:30,312 INFO L226 Difference]: Without dead ends: 53914 [2021-12-17 17:08:30,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:30,343 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1069 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:30,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 1043 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:08:30,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53914 states. [2021-12-17 17:08:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53914 to 53912. [2021-12-17 17:08:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53912 states, 53907 states have (on average 1.5108241972285603) internal successors, (81444), 53911 states have internal predecessors, (81444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53912 states to 53912 states and 81444 transitions. [2021-12-17 17:08:33,237 INFO L78 Accepts]: Start accepts. Automaton has 53912 states and 81444 transitions. Word has length 161 [2021-12-17 17:08:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:33,237 INFO L470 AbstractCegarLoop]: Abstraction has 53912 states and 81444 transitions. [2021-12-17 17:08:33,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 53912 states and 81444 transitions. [2021-12-17 17:08:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-17 17:08:33,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:33,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:33,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 17:08:33,252 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:33,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1317025973, now seen corresponding path program 1 times [2021-12-17 17:08:33,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:33,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273055473] [2021-12-17 17:08:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:33,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:33,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:33,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273055473] [2021-12-17 17:08:33,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273055473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:33,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:33,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:08:33,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908936699] [2021-12-17 17:08:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:33,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:08:33,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:08:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:33,457 INFO L87 Difference]: Start difference. First operand 53912 states and 81444 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:37,610 INFO L93 Difference]: Finished difference Result 141812 states and 213715 transitions. [2021-12-17 17:08:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:08:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-17 17:08:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:37,752 INFO L225 Difference]: With dead ends: 141812 [2021-12-17 17:08:37,752 INFO L226 Difference]: Without dead ends: 88032 [2021-12-17 17:08:37,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:08:37,809 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 1168 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:37,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 1542 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:08:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88032 states. [2021-12-17 17:08:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88032 to 87998. [2021-12-17 17:08:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87998 states, 87993 states have (on average 1.4901639903174115) internal successors, (131124), 87997 states have internal predecessors, (131124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87998 states to 87998 states and 131124 transitions. [2021-12-17 17:08:42,499 INFO L78 Accepts]: Start accepts. Automaton has 87998 states and 131124 transitions. Word has length 161 [2021-12-17 17:08:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:42,499 INFO L470 AbstractCegarLoop]: Abstraction has 87998 states and 131124 transitions. [2021-12-17 17:08:42,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 87998 states and 131124 transitions. [2021-12-17 17:08:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-17 17:08:42,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:42,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:42,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 17:08:42,522 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 17:08:42,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:42,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1852395152, now seen corresponding path program 1 times [2021-12-17 17:08:42,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:42,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734610920] [2021-12-17 17:08:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:42,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:42,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:42,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734610920] [2021-12-17 17:08:42,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734610920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:42,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:42,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:08:42,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385482185] [2021-12-17 17:08:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:42,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:08:42,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:42,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:08:42,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:08:42,601 INFO L87 Difference]: Start difference. First operand 87998 states and 131124 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)